My Publication List Can Be Found Here

Uppsala, June 19th, 2019 Prof. Nikolai Piskunov Current affiliation: Dept. of Physics and Astronomy Uppsala University Box 515 Regementsvägen 1 SE-75120 Uppsala SWEDEN Publication list 1. Willamo, T., T. Hackman, J. J. Lehtinen, M. J. Käpylä, I. Ilyin, G. W. Henry, L. Jetsu, O. Kochukhov, and N. Piskunov: 2019. Long-term spot monitoring of the young solar analogue V889 Herculis. A&A622, A170, 2 citations, DOI:10.1051/0004-6361/201834562, https://ui.adsabs.harvard.edu/abs/2019A&A...622A.170W 2. Marconi, A., and 71 colleagues: 2018. ELT-HIRES, the high resolution spectrograph for the ELT: results from the Phase A study. Proc. SPIE10702, 107021Y, 0 citations, DOI:10.1117/12.2311664, https://ui.adsabs.harvard.edu/abs/2018SPIE10702E..1YM 3. Dorval, P., F. Snik, N. Piskunov, R. Navarro, J. Kragt, R. ter Horst, P. Kunst, I. Snellen, T. Naylor, and S. Thompson: 2018. Analysis of the polarimetric performance of the HARPS3 Cassegrain adaptor unit. Proc. SPIE10702, 107026B, 0 citations, DOI:10.1117/12.2312535, https://ui.adsabs.harvard.edu/abs/2018SPIE10702E..6BD 4. Brucalassi, A., and 36 colleagues: 2018. Full system test and early preliminary acceptance Europe results for CRIRES+. Proc. SPIE10702, 1070239, 0 citations, DOI:10.1117/12.2313743, https://ui.adsabs.harvard.edu/abs/2018SPIE10702E..39B 5. Piskunov, N., and 31 colleagues: 2018. A unique infrared spectropolarimetric unit for CRIRES+. Proc. SPIE10702, 1070234, 0 citations, DOI:10.1117/12.2313512, https://ui.adsabs.harvard.edu/abs/2018SPIE10702E..34P 6. Aronson, E. and N. Piskunov: 2018. Model-independent Exoplanet Transit Spectroscopy. AJ155, 208, 2 citations, DOI:10.3847/1538-3881/aaa3fe, https://ui.adsabs.harvard.edu/abs/2018AJ....155..208A 7. Regandell, S., T. Marquart, and N. Piskunov: 2018. Inside a VAMDC data nodeputting standards into practical software. Phys. Scr93, 035001, 2 citations, DOI:10.1088/1402-4896/aaa268, https://ui.adsabs.harvard.edu/abs/2018PhyS...93c5001R 8. Piskunov, N.: 2017. Deriving stellar parameters with the SME software package. Second BRITE-Constellation Science Conference: Small satellitesbig science 5, 209, 0 citations, https://ui.adsabs.harvard.edu/abs/2017sbcs.conf..209P 9. Piskunov, N., T. Ryabchikova, Y. Pakhomov, T. Sitnova, S. Alekseeva, L. Mashonkina, and T. Nordlander: 2017. Program Package for the Analysis of High Resolution High Signal-To-Noise Stellar Spectra. Stars: From Collapse to Collapse 510, 509, 3 citations, https://ui.adsabs.harvard.edu/abs/2017ASPC..510..509P 10. Piskunov, N.: 2017. Main High-Resolution Near-IR Spectrometer for the VLT. Stars: From Collapse to Collapse 510, 514, 2 citations, https://ui.adsabs.harvard.edu/abs/2017ASPC..510..514P 11. Pakhomov, Y., N. Piskunov, and T. Ryabchikova: 2017. VALD3: Current Developments. Stars: From Col- lapse to Collapse 510, 518, 3 citations, https://ui.adsabs.harvard.edu/abs/2017ASPC..510..518P 12. Brewer, J. M., D. A. Fischer, J. A. Valenti, and N. Piskunov: 2017. Erratum: Spectral Properties of Cool Stars: Extended Abundance Analysis of 1617 Planet Search Stars (2016, ApJS, 225, 32). ApJS230, 12, 1 citations, DOI:10.3847/1538-4365/aa6d5a, https://ui.adsabs.harvard.edu/abs/2017ApJS..230...12B 13. Piskunov, N. and J. A. Valenti: 2017. Spectroscopy Made Easy: Evolution. A&A597, A16, 85 citations, DOI:10.1051/0004-6361/201629124, https://ui.adsabs.harvard.edu/abs/2017A&A...597A..16P 14. Brewer, J. M., D. A. Fischer, J. A. Valenti, and N. Piskunov: 2016. VizieR Online Data Catalog: Extended abundance analysis of cool stars (Brewer+, 2016). VizieR Online Data Catalog J/ApJS/225/32, 0 citations, https://ui.adsabs.harvard.edu/abs/2016yCat..22250032B 15. de Jong, R. S., and 39 colleagues: 2016. 4MOST: the 4-metre Multi-Object Spectroscopic Telescope project at preliminary design review. Proc. SPIE9908, 99081O, 32 citations, DOI:10.1117/12.2232832, https://ui.adsabs.harvard.edu/abs/2016SPIE.9908E..1OD 16. Follert, R., and 33 colleagues: 2016. Characterizing the cross dispersion reflection gratings of CRIRES+. Proc. SPIE9912, 99122B, 0 citations, DOI:10.1117/12.2232569, https://ui.adsabs.harvard.edu/abs/2016SPIE.9912E..2BF 17. Thompson, S. J., and 27 colleagues: 2016. HARPS3 for a roboticized Isaac Newton Telescope. Proc. SPIE9908, 99086F, 4 citations, DOI:10.1117/12.2232111, https://ui.adsabs.harvard.edu/abs/2016SPIE.9908E..6FT 18. Dorn, R. J., and 29 colleagues: 2016. The "+" for CRIRES: enabling better science at infrared wavelength and high spectral resolution at the ESO VLT. Proc. SPIE9908, 99080I, 2 citations, DOI:10.1117/12.2232837, https://ui.adsabs.harvard.edu/abs/2016SPIE.9908E..0ID 19. Marconi, A., and 72 colleagues: 2016. EELT-HIRES the high-resolution spectrograph for the E-ELT. Proc. SPIE9908, 990823, 10 citations, DOI:10.1117/12.2231653, https://ui.adsabs.harvard.edu/abs/2016SPIE.9908E..23M 20. Ryabchikova, T., N. Piskunov, Y. Pakhomov, V. Tsymbal, A. Titarenko, T. Sitnova, S. Alexeeva, L. Fossati, and L. Mashonkina: 2016. VizieR Online Data Catalog: FGK dwarfs atmospheric parameters (Ryabchikova+, 2016). VizieR Online Data Catalog J/MNRAS/456/1221, 0 citations, https://ui.adsabs.harvard.edu/abs/2016yCat..74561221R 21. Brewer, J. M., D. A. Fischer, J. A. Valenti, and N. Piskunov: 2016. Spectral Properties of Cool Stars: Extended Abundance Analysis of 1,617 Planet-search Stars. ApJS225, 32, 97 citations, DOI:10.3847/0067- 0049/225/2/32, https://ui.adsabs.harvard.edu/abs/2016ApJS..225...32B 22. Lavail, A., N. Piskunov, U. Heiter, T. Marquart, E. Stempels, and Crires+ Consortium: 2016. CRIRES+: A High Resolution Near-Infrared Spectro(Polari)Meter At The VLT. 19th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun (CS19) 48, 0 citations, DOI:10.5281/zenodo.55729, https://ui.adsabs.harvard.edu/abs/2016csss.confE..48L 23. Shulyak, D., L. Malo, A. Reiners, O. Kochukhov, S. Jeffers, and N. Piskunov: 2016. Hunting For Strong Magnetic Fields In Rapidly Rotating Sun-Like Stars With Stokes-I Observations. 19th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun (CS19) 118, 0 citations, DOI:10.5281/zenodo.59134, https://ui.adsabs.harvard.edu/abs/2016csss.confE.118S 24. Cunha, K., and 10 colleagues: 2016. Highlights of IAU Commission 29: Recent Advances and Perspectives on Stellar Spectroscopy. Transactions of the International Astronomical Union, Series A 29A, 428, 0 citations, DOI:10.1017/S1743921316000892, https://ui.adsabs.harvard.edu/abs/2016IAUTA..29..428C 25. Dubernet, M. L., and 68 colleagues: 2016. The virtual atomic and molecular data centre (VAMDC) consortium. Journal of Physics B Atomic Molecular Physics 49, 074003, 54 citations, DOI:10.1088/0953- 4075/49/7/074003, https://ui.adsabs.harvard.edu/abs/2016JPhB...49g4003D 26. Ryabchikova, T., N. Piskunov, Y. Pakhomov, V. Tsymbal, A. Titarenko, T. Sitnova, S. Alexeeva, L. Fossati, and L. Mashonkina: 2016. Accuracy of atmospheric parameters of FGK dwarfs determined by spectrum fitting. MNRAS456, 1221, 24 citations, DOI:10.1093/mnras/stv2725, https://ui.adsabs.harvard.edu/abs/2016MNRAS.456.1221R 27. Boyarchuk, A. A., and 31 colleagues: 2016. Scientific problems addressed by the Spektr-UV space project (world space ObservatoryUltraviolet). Astronomy Reports 60, 1, 28 citations, DOI:10.1134/S1063772916010017, https://ui.adsabs.harvard.edu/abs/2016ARep...60....1B 28. Tinetti, G., and 354 colleagues: 2015. The EChO science case. Experimental Astronomy 40, 329, 5 citations, DOI:10.1007/s10686-015-9484-8, https://ui.adsabs.harvard.edu/abs/2015ExA....40..329T 29. Aronson, E., P. Waldén, and N. Piskunov: 2015. Using near-infrared spectroscopy for characterization of transiting exoplanets (Corrigendum). A&A581, C1, 0 citations, DOI:10.1051/0004-6361/201424058e, https://ui.adsabs.harvard.edu/abs/2015A&A...581C...1A 30. Cole, E. M., T. Hackman, M. J. Käpylä, I. Ilyin, O. Kochukhov, and N. Piskunov: 2015. Doppler imaging of LQ Hydrae for 1998-2002. A&A581, A69, 6 citations, DOI:10.1051/0004-6361/201425440, https://ui.adsabs.harvard.edu/abs/2015A&A...581A..69C 31. Piskunov, N. and E. Aronson: 2015. Posters: Poster #73927: High-resolution transmission spectroscopy of exoplanets with the ground-based instruments. Pathways Towards Habitable Planets 54, 0 citations, https://ui.adsabs.harvard.edu/abs/2015pthp.confE..54P 32. Barklem, P. S. and N. Piskunov: 2015. HLINOP: Hydrogen LINe OPacity in stellar atmospheres. Astro- physics Source Code Library ascl:1507.008, 3 citations, https://ui.adsabs.harvard.edu/abs/2015ascl.soft07008B 33. Brewer, J. M., D. A. Fischer, S. Basu, J. A. Valenti, and N. Piskunov: 2015. Accurate Gravities of F, G, and K stars from High Resolution Spectra Without External Constraints. ApJ805, 126, 40 citations, DOI:10.1088/0004-637X/805/2/126, https://ui.adsabs.harvard.edu/abs/2015ApJ...805..126B 34. Ryabchikova, T., N. Piskunov, R. L. Kurucz, H. C. Stempels, U. Heiter, Y. Pakhomov, and P. S. Barklem: 2015. A major upgrade of the VALD database. Phys. Scr90, 054005, 199 citations, DOI:10.1088/0031- 8949/90/5/054005, https://ui.adsabs.harvard.edu/abs/2015PhyS...90e4005R 35. Ryabchikova, T., N. Piskunov, and D. Shulyak: 2015. On the Accuracy of Atmospheric Parameter Deter- mination in BAFGK Stars. Physics and Evolution of Magnetic and Related Stars 494, 308, 5 citations, https://ui.adsabs.harvard.edu/abs/2015ASPC..494..308R 36. Korhonen, H., J. M. Andersen, N. Piskunov, T. Hackman, D. Juncher, S. P. Järvinen, and U. G. Jørgensen: 2015. Stellar activity as noise in exoplanet detection - I. Methods and application to solar-like stars and activity cycles. MNRAS448, 3038, 7 citations, DOI:10.1093/mnras/stu2730, https://ui.adsabs.harvard.edu/abs/2015MNRAS.448.3038K 37. Brown, A., and 11 colleagues: 2015. Serendipitous Discovery of a Dwarf Nova in the Kepler Field Near the G Dwarf KIC 5438845. AJ149, 67, 2 citations, DOI:10.1088/0004-6256/149/2/67, https://ui.adsabs.harvard.edu/abs/2015AJ....149...67B 38. Kochukhov, O., N. Rusomarov, J. A. Valenti, H. C. Stempels, F. Snik, M. Rodenhuis, N. Piskunov, V. Mak- aganiuk, C. U. Keller, and C. M. Johns-Krull: 2015. Magnetic field topology and chemical spot distributions in the extreme Ap star HD 75049. A&A574, A79, 21 citations, DOI:10.1051/0004-6361/201425065, https://ui.adsabs.harvard.edu/abs/2015A&A...574A..79K 39. Rusomarov, N., O. Kochukhov, and N. Piskunov: 2015. Stellar magnetic fields from four Stokes parameter observations. New Windows on Massive Stars 307, 395, 0 citations, DOI:10.1017/S1743921314007248, https://ui.adsabs.harvard.edu/abs/2015IAUS..307..395R 40. Rusomarov, N., O. Kochukhov, T. Ryabchikova, and N. Piskunov: 2015. Three-dimensional magnetic and abundance mapping of the cool Ap star HD 24712. II. Two-dimensional magnetic Doppler imaging in all four Stokes parameters. A&A573, A123, 21 citations, DOI:10.1051/0004-6361/201424559, https://ui.adsabs.harvard.edu/abs/2015A&A...573A.123R 41. Rusomarov, N., O. Kochukhov, and N. Piskunov: 2014. Magnetic fields of Ap stars from full Stokes spectropolarimetric observations. Putting A Stars into Context: Evolution, Environment, and Related Stars 380, 0 citations, https://ui.adsabs.harvard.edu/abs/2014psce.conf..380R 42. Piskunov, N., T. Ryabchikova, A. Titarenko, Y. V. Pakhomov, and B. Nizamov: 2014. Methodology for measuring fundamental parameters and associated uncertainties for middle and cool main-sequence stars. Putting A Stars into Context: Evolution, Environment, and Related Stars 130, 0 citations, https://ui.adsabs.harvard.edu/abs/2014psce.conf..130P 43. Udry, S., and 15 colleagues: 2014. Exoplanet Science with the European Extremely Large Telescope. The Case for Visible and Near-IR Spectroscopy at High Resolution. arXiv e-prints arXiv:1412.1048, 4 citations, https://ui.adsabs.harvard.edu/abs/2014arXiv1412.1048U 44. Shulyak, D., A. Reiners, U. Seemann, O. Kochukhov, and N. Piskunov: 2014. Magnetic fields in M-dwarfs from high-resolution infrared spectroscopy. Magnetic Fields throughout Stellar Evolution 302, 170, 0 citations, DOI:10.1017/S1743921314001999, https://ui.adsabs.harvard.edu/abs/2014IAUS..302..170S 45. Rusomarov, N., O. Kochukhov, and N. Piskunov: 2014. Magnetic fields of Ap stars from full Stokes vec- tor spectropolarimetric observations. Magnetic Fields throughout Stellar Evolution 302, 304, 0 citations, DOI:10.1017/S1743921314002348, https://ui.adsabs.harvard.edu/abs/2014IAUS..302..304R 46. Zerbi, F. M., and 51 colleagues: 2014. HIRES: the high resolution spectrograph for the E-ELT. Proc. SPIE9147, 914723, 6 citations, DOI:10.1117/12.2055329, https://ui.adsabs.harvard.edu/abs/2014SPIE.9147E..23Z 47. Seemann, U., and 28 colleagues: 2014. Wavelength calibration from 1-5m for the CRIRES+ high-resolution spectrograph at the VLT. Proc. SPIE9147, 91475G, 4 citations, DOI:10.1117/12.2056668, https://ui.adsabs.harvard.edu/abs/2014SPIE.9147E..5GS 48. Lizon, J. L., and 27 colleagues: 2014. Opto-mechanical design of a new cross dispersion unit for the CRIRES+ high resolution spectrograph for the VLT. Proc. SPIE9147, 91477S, 1 citations, DOI:10.1117/12.2054800, https://ui.adsabs.harvard.edu/abs/2014SPIE.9147E..7SL 49. Lockhart, M., and 31 colleagues: 2014. Novel infrared polarimeter for the ESO CRIRES+ instrument. Proc. SPIE9147, 91478P, 0 citations, DOI:10.1117/12.2056367, https://ui.adsabs.harvard.edu/abs/2014SPIE.9147E..8PL 50. Follert, R., and 30 colleagues: 2014. CRIRES+: a cross-dispersed high-resolution infrared spectrograph for the ESO VLT. Proc. SPIE9147, 914719, 18 citations, DOI:10.1117/12.2054197, https://ui.adsabs.harvard.edu/abs/2014SPIE.9147E..19F 51. Oliva, E., and 33 colleagues: 2014. Concept and optical design of the cross-disperser module for CRIRES+. Proc. SPIE9147, 91477R, 4 citations, DOI:10.1117/12.2054381, https://ui.adsabs.harvard.edu/abs/2014SPIE.9147E..7RO 52. Dorn, R. J., and 30 colleagues: 2014. CRIRES+: Exploring the Cold Universe at High Spectral Resolution. The Messenger 156, 7, 7 citations, https://ui.adsabs.harvard.edu/abs/2014Msngr.156....7D 53. Shulyak, D., A. Reiners, U. Seemann, O. Kochukhov, and N. Piskunov: 2014. Exploring the magnetic field complexity in M dwarfs at the boundary to full convection. A&A563, A35, 25 citations, DOI:10.1051/0004- 6361/201322136, https://ui.adsabs.harvard.edu/abs/2014A&A...563A..35S 54. Lindborg, M., T. Hackman, M. J. Mantere, H. Korhonen, I. Ilyin, O. Kochukhov, and N. Piskunov: 2014. Doppler images of DI Piscium during 2004-2006. A&A562, A139, 5 citations, DOI:10.1051/0004- 6361/201322669, https://ui.adsabs.harvard.edu/abs/2014A&A...562A.139L 55. Ryabchikova, T. A., L. I. Mashonkina, A. R. Titarenko, S. A. Alexeeva, Y. V. Pakhomov, N. E. Piskunov, T. M. Sitnova, and B. A. Nizamov: 2014. Testing SME determination of stellar parameters. Setting the scene for Gaia and LAMOST 298, 436, 0 citations, DOI:10.1017/S1743921313007023, https://ui.adsabs.harvard.edu/abs/2014IAUS..298..436R 56. Piskunov, N.: 2014. A Gentle Introduction to SME. Determination of Atmospheric Parameters of B 287, 0 citations, DOI:10.1007/978-3-319-06956-2-25, https://ui.adsabs.harvard.edu/abs/2014dapb.book..287P 57. Rusomarov, N., and 10 colleagues: 2013. Three-dimensional magnetic and abundance mapping of the cool Ap star HD 24712 . I. Spectropolarimetric observations in all four Stokes parameters. A&A558, A8, 20 citations, DOI:10.1051/0004-6361/201220950, https://ui.adsabs.harvard.edu/abs/2013A&A...558A...8R 58. Kochukhov, O., V. Makaganiuk, N. Piskunov, S. V. Jeffers, C. M. Johns-Krull, C. U. Keller, M. Rodenhuis, F. Snik, H. C. Stempels, and J. A. Valenti: 2013. Are there tangled magnetic fields on HgMn stars?. A&A554, A61, 19 citations, DOI:10.1051/0004-6361/201321467, https://ui.adsabs.harvard.edu/abs/2013A&A...554A..61K 59. Reiners, A., D. Shulyak, G. Anglada-Escudé, S. V. Jeffers, J. Morin, M. Zechmeister, O. Kochukhov, and N. Piskunov: 2013. Radial velocity signatures of Zeeman broadening. A&A552, A103, 32 citations, DOI:10.1051/0004-6361/201220437, https://ui.adsabs.harvard.edu/abs/2013A&A...552A.103R 60. Johns-Krull, C. M., and 10 colleagues: 2013. Magnetically Controlled Accretion on the Classical T Tauri Stars GQ Lupi and TW Hydrae. ApJ765, 11, 16 citations, DOI:10.1088/0004-637X/765/1/11, https://ui.adsabs.harvard.edu/abs/2013ApJ...765...11J 61. Nesvacil, N., and 10 colleagues: 2013. Multi-element Doppler imaging of the CP2 star HD 3980. arXiv e-prints arXiv:1303.2703, 0 citations, https://ui.adsabs.harvard.edu/abs/2013arXiv1303.2703N 62. Brown, A., L. Walkowicz, S. Saar, S. Hawley, A. Kowalski, G. Furesz, and N. Piskunov: 2013. MMT Hectochelle Spectral Variability of Active Late-type Stars in the Kepler Field (2013A). NOAO Proposal 286, 0 citations, https://ui.adsabs.harvard.edu/abs/2013noao.prop..286B 63. de la Cruz Rodríguez, J. and N. Piskunov: 2013. DELO-Bezier Formal Solutions of the Polarized Radiative Transfer Equation. ApJ764, 33, 35 citations, DOI:10.1088/0004-637X/764/1/33, https://ui.adsabs.harvard.edu/abs/2013ApJ...764...33D 64. Wright, J. T., and 10 colleagues: 2013. VizieR Online Data Catalog: Exoplanet Orbit Database (Wright+, 2011). VizieR Online Data Catalog J/PASP/123/412, 0 citations, https://ui.adsabs.harvard.edu/abs/2013yCat..61230412W 65. Wells, M., and 14 colleagues: 2013. A Large Sample of Magnetically-Active Stars Observed With Kepler. American Astronomical Society Meeting Abstracts #221 221, 354.15, 1 citations, https://ui.adsabs.harvard.edu/abs/2013AAS...22135415W 66. Johns-Krull, C. M., and 10 colleagues: 2013. HARPS Spectropolarimetry of the Classical T Tauri Stars GQ Lup and TW Hya. American Astronomical Society Meeting Abstracts #221 221, 256.14, 0 citations, https://ui.adsabs.harvard.edu/abs/2013AAS...22125614J 67. Brown, A., and 15 colleagues: 2013. Young Star Populations in the Kepler Field. American Astronomical Society Meeting Abstracts #221 221, 354.14, 0 citations, https://ui.adsabs.harvard.edu/abs/2013AAS...22135414B 68. Doronin, M., and 15 colleagues: 2012. “Virtual Atomic and Molecular Data Centre” and Astrophysics: Level 2 Release. Astronomical Data Analysis Software and Systems XXI 461, 331, 3 citations, https://ui.adsabs.harvard.edu/abs/2012ASPC..461..331D 69. Oliva, E., A. Hatzes, N. Piskunov, A. Reiners, H. U. Käufl, D. Ferruzzi, A. Tozzi, and L. Origlia: 2012. Up- grading CRIRES-VLT to cross-dispersed mode. Proc. SPIE8446, 84462N, 10 citations, DOI:10.1117/12.924969, https://ui.adsabs.harvard.edu/abs/2012SPIE.8446E..2NO 70. Onehag, A., U. Heiter, B. Gustafsson, N. Piskunov, B. Plez, and A. Reiners: 2012. VizieR Online Data Catalog: 3 M dwarfs near-infrared spectra (Onehag+, 2012). VizieR Online Data Catalog J/A+A/542/A33, 0 citations, https://ui.adsabs.harvard.edu/abs/2012yCat..35420033O 71. Önehag, A., U. Heiter, B. Gustafsson, N. Piskunov, B. Plez, and A. Reiners: 2012. M-dwarf metallicities. A high-resolution spectroscopic study in the near infrared. A&A542, A33, 55 citations, DOI:10.1051/0004- 6361/201118101, https://ui.adsabs.harvard.edu/abs/2012A&A...542A..33O 72. Johns-Krull, C. M., J. A. Valenti, S. V. Jeffers, N. E. Piskunov, O. Kochukhov, C. Keller, F. Snik, M. Rodenhuis, V. Makaganiuk, and H. Stempels: 2012. HARPS spectropolarimetry of classical T Tauri stars. American Institute of Physics Conference Series 1429, 43, 0 citations, DOI:10.1063/1.3701899, https://ui.adsabs.harvard.edu/abs/2012AIPC.1429...43J 73. Piskunov, N., and 11 colleagues: 2012. Commission 29: Stellar Spectra. Transactions of the International Astronomical Union, Series A 7, 157, 0 citations, DOI:10.1017/S1743921312002761, https://ui.adsabs.harvard.edu/abs/2012IAUTA..28..157P 74. Mathys, G., and 10 colleagues: 2012. Divisions IV-V / Working Group Ap’ Related Stars. Transactions of the International Astronomical Union, Series A 7, 203, 0 citations, DOI:10.1017/S1743921312002815, https://ui.adsabs.harvard.edu/abs/2012IAUTA..28..203M 75. Corbally, C., F. D’Antona, M. Spite, M. Asplund, C. Charbonnel, J. A. Docobo, R. O. Gray, and N. E. Piskunov: 2012. Division Iv: Stars. Transactions of the International Astronomical Union, Series A 7, 147, 0 citations, DOI:10.1017/S1743921312002748, https://ui.adsabs.harvard.edu/abs/2012IAUTA..28..147C 76. Makaganiuk, V., O. Kochukhov, N. Piskunov, S. V. Jeffers, C. M. Johns-Krull, C. U. Keller, M. Rodenhuis, F. Snik, H. C. Stempels, and J. A. Valenti: 2012. Magnetism, chemical spots, and stratification in the HgMn star Phoenicis. A&A539, A142, 20 citations, DOI:10.1051/0004-6361/201118167, https://ui.adsabs.harvard.edu/abs/2012A&A...539A.142M 77. Hackman, T., M. J. Mantere, M. Lindborg, I. Ilyin, O. Kochukhov, N. Piskunov, and I. Tuominen: 2012. Doppler images of II Pegasi for 2004-2010. A&A538, A126, 24 citations, DOI:10.1051/0004-6361/201117603, https://ui.adsabs.harvard.edu/abs/2012A&A...538A.126H 78. Valenti, J. A. and N. Piskunov: 2012. SME: Spectroscopy Made Easy. 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Magnetic Fields in M-dwarfs: Quantitative Results from Detailed Spectral Synthesis in FeH Lines. 16th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun 448, 1263, 0 citations, https://ui.adsabs.harvard.edu/abs/2011ASPC..448.1263S 83. Kochukhov, O., F. Snik, N. Piskunov, S. V. Jeffers, C. U. Keller, V. Makaganiuk, J. A. Valenti, C. M. Johns-Krull, M. Rodenhuis, and H. C. Stempels: 2011. New Insights into Stellar Magnetism from the Spec- tropolarimetry in All Four Stokes Parameters. 16th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun 448, 245, 0 citations, https://ui.adsabs.harvard.edu/abs/2011ASPC..448..245K 84. Shulyak, D., A. Seifahrt, A. Reiners, O. Kochukhov, and N. Piskunov: 2011. Rotation, magnetism and metallicity of M dwarf systems. MNRAS418, 2548, 19 citations, DOI:10.1111/j.1365-2966.2011.19644.x, https://ui.adsabs.harvard.edu/abs/2011MNRAS.418.2548S 85. Kochukhov, O., V. Makaganiuk, N. Piskunov, S. V. Jeffers, C. M. Johns-Krull, C. U. Keller, M. 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Contributions of the Astronomical Observatory Skalnate Pleso 27, 228, 4 citations, https://ui.adsabs.harvard.edu/abs/1998CoSka..27..228K 237. Piskunov, N.: 1998. INVERS10: A New Code for Magnetic Doppler Imaging. Cool Stars, Stellar Systems, and the Sun 154, 2029, 1 citations, https://ui.adsabs.harvard.edu/abs/1998ASPC..154.2029P 238. Valenti, J. A., C. M. Johns-Krull, and N. Piskunov: 1998. Observational Constraints on the Dynamo in Flare Stars. Cool Stars, Stellar Systems, and the Sun 154, 1357, 4 citations, https://ui.adsabs.harvard.edu/abs/1998ASPC..154.1357V 239. Pettersson, B., E. Stempels, and N. Piskunov: 1998. A Fiber-Linked Four Stokes-Parameter Polarimeter for the SOFIN Spectrometer on the Nordic Optical Telescope. Fiber Optics in Astronomy III 152, 343, 1 citations, https://ui.adsabs.harvard.edu/abs/1998ASPC..152..343P 240. Ryabchikova, T. A., N. E. Piskunov, F. Kupka, and W. W. Weiss: 1997. The Vienna Atomic Line Database : Present State and Future Development. Baltic Astronomy 6, 244, 102 citations, DOI:10.1515/astro-1997- 0216, https://ui.adsabs.harvard.edu/abs/1997BaltA...6..244R 241. Piskunov, N., B. E. Wood, J. L. Linsky, R. C. Dempsey, and R. Ayres: 1997. Local Interstellar Medium Properties and Deuterium Abundances for the Lines of Sight toward HR 1099, 31 Comae, Ceti, and Cassiopeiae. ApJ474, 315, 87 citations, DOI:10.1086/303449, https://ui.adsabs.harvard.edu/abs/1997ApJ...474..315P 242. Ryabchikova, T. A., V. M. Pavlova, E. S. Davydova, and N. E. Piskunov: 1996. Surface distribution of chromium on the CP2 star HD 220825 ( Psc). Astronomy Letters 22, 822, 6 citations, https://ui.adsabs.harvard.edu/abs/1996AstL...22..822R 243. Valenti, J. A. and N. Piskunov: 1996. Spectroscopy made easy: A new tool for fitting observations with synthetic spectra.. A&AS118, 595, 531 citations, https://ui.adsabs.harvard.edu/abs/1996A&AS..118..595V 244. Valenti, J. A., C. M. Johns-Krull, and N. Piskunov: 1996. M-Dwarfs: Molecules and Magnetic Fields. American Astronomical Society Meeting Abstracts #188 188, 32.06, 0 citations, https://ui.adsabs.harvard.edu/abs/1996AAS...188.3206V 245. Linsky, J. L., N. Piskunov, and B. E. Wood: 1996. The Three-Dimensional Structure of the Local Interstellar Medium. American Astronomical Society Meeting Abstracts #188 188, 44.07, 1 citations, https://ui.adsabs.harvard.edu/abs/1996AAS...188.4407L 246. Piskunov, N.: 1996. Doppler imaging of eclipsing binaries. Stellar Surface Structure 176, 45, 17 citations, https://ui.adsabs.harvard.edu/abs/1996IAUS..176...45P 247. Piskunov, N. E.: 1996. The Structure of VALD. M.A.S.S., Model Atmospheres and Spectrum Synthesis 108, 307, 7 citations, https://ui.adsabs.harvard.edu/abs/1996ASPC..108..307P 248. Valenti, J. A. and N. E. Piskunov: 1996. Spectroscopy Made Easy. M.A.S.S., Model Atmospheres and Spectrum Synthesis 108, 175, 4 citations, https://ui.adsabs.harvard.edu/abs/1996ASPC..108..175V 249. Lester, J. B. and N. E. Piskunov: 1996. Introduction. M.A.S.S., Model Atmospheres and Spectrum Synthesis 108, 159, 0 citations, https://ui.adsabs.harvard.edu/abs/1996ASPC..108..159L 250. Bennett, P. D., A. Brown, G. M. Harper, N. Piskunov, and R. E. M. Griffin: 1995. The Chromosphere and Wind of zeta Aurigae. American Astronomical Society Meeting Abstracts 187, 103.04, 0 citations, https://ui.adsabs.harvard.edu/abs/1995AAS...18710304B 251. Piskunov, N. E., F. Kupka, T. A. Ryabchikova, W. W. Weiss, and C. S. Jeffery: 1995. VALD: The Vienna Atomic Line Data Base.. A&AS112, 525, 770 citations, https://ui.adsabs.harvard.edu/abs/1995A&AS..112..525P 252. Hiesberger, F., N. Piskunov, W. K. Bonsack, W. W. Weiss, T. A. Ryabchikova, and R. Kuschnig: 1995. The HeI surface distribution of the CP2 star CU Virginis.. A&A296, 473, 14 citations, https://ui.adsabs.harvard.edu/abs/1995A&A...296..473H 253. Kuschnig, R., T. Ryabchikova, N. Piskunov, W. W. Weiss, and J. M. Lecontel: 1995. The atmosphere of the peculiar binary system ET Andromedae.. A&A294, 757, 9 citations, https://ui.adsabs.harvard.edu/abs/1995A&A...294..757K 254. Piskunov, N. E., F. Kupka, T. A. Ryabchikova, W. W. Weiss, and C. S. Jeffery: 1995. The Vienna Atomic Line Data-Base. Laboratory and Astronomical High Resolution Spectra 81, 610, 2 citations, https://ui.adsabs.harvard.edu/abs/1995ASPC...81..610P 255. Piskunov, N. E. and J. B. Rice: 1995. Progress in surface imaging. Bulletin Crimean Astrophysical Obser- vatory 91, 176, 0 citations, https://ui.adsabs.harvard.edu/abs/1995BCrAO..91..176P 256. Smirnov, O. M. and N. E. Piskunov: 1995. Providing a Common GUI to Image Processing Tasks under pcIPS. Astronomical Data Analysis Software and Systems IV 77, 133, 2 citations, https://ui.adsabs.harvard.edu/abs/1995ASPC...77..133S 257. Ryabchikova, T., R. Kuschnig, N. E. Piskunov, and V. Pavlova: 1995. Ap-star mapping: Fe and Cr abundance distribution on the surface of HD 153882. IAU Symposium 176, 132, 2 citations, https://ui.adsabs.harvard.edu/abs/1995IAUS..176P.132R 258. Kuschnig, R., T. Ryabchikova, N. E. Piskunov, and W. W. Weiss: 1995. Ap-star mapping: He, Mg, Si, and Fe surface distributions on the CP2 star CU Virginis. IAU Symposium 176, 135, 2 citations, https://ui.adsabs.harvard.edu/abs/1995IAUS..176P.135K 259. Piskunov, N., T. A. Ryabchikova, R. Kuschnig, and W. W. Weiss: 1994. Spectrum variability of ET An- dromedae: SI and He surface mapping.. A&A291, 910, 12 citations, https://ui.adsabs.harvard.edu/abs/1994A&A...291..910P 260. Piskunov, N. and W. H. Wehlau: 1994. The detectability of cool polar caps on late type stars.. A&A289, 868, 8 citations, https://ui.adsabs.harvard.edu/abs/1994A&A...289..868P 261. Piskunov, N.: 1994. Surface imaging of stars.. JRASC88, 254, 0 citations, https://ui.adsabs.harvard.edu/abs/1994JRASC..88..254P 262. Ryabchikova, T. A., G. M. Hill, J. D. Landstreet, N. Piskunov, and T. A. A. Sigut: 1994. Astrophysical determination of optical oscillator strengths for TI II.. MNRAS267, 697, 26 citations, DOI:10.1093/mnras/267.3.697, https://ui.adsabs.harvard.edu/abs/1994MNRAS.267..697R 263. Piskunov, N. E., D. Huenemoerder, and S. H. Saar: 1994. Simultaneous SPOT and Chromosphere Maps of FK Comae. Cool Stars, Stellar Systems, and the Sun 64, 658, 16 citations, https://ui.adsabs.harvard.edu/abs/1994ASPC...64..658P 264. Saar, S. H., N. E. Piskunov, and I. Tuominen: 1994. Multiepoch Magnetic Surface Images of LQ Hya. Cool Stars, Stellar Systems, and the Sun 64, 661, 29 citations, https://ui.adsabs.harvard.edu/abs/1994ASPC...64..661S 265. Piskunov, N.: 1994. Surface Imaging of Spotted Stars. Chemically Peculiar and Magnetic Stars 53, 0 citations, https://ui.adsabs.harvard.edu/abs/1994cpms.conf...53P 266. Smirnov, O. M. and N. E. Piskunov: 1994. PC-based Astronomical Image Processing with pcIPS. Astro- nomical Data Analysis Software and Systems III 61, 245, 12 citations, https://ui.adsabs.harvard.edu/abs/1994ASPC...61..245S 267. Piskunov, N. E. and J. B. Rice: 1994. Progress in surface imaging.. Izvestiya Ordena Trudovogo Krasnogo Znameni Krymskoj Astrofizicheskoj Observatorii 91, 208, 0 citations, https://ui.adsabs.harvard.edu/abs/1994IzKry..91..208P 268. Piskunov, N. E. and J. B. Rice: 1993. Techniques for Surface Imaging of Stars. PASP105, 1415, 91 citations, DOI:10.1086/133323, https://ui.adsabs.harvard.edu/abs/1993PASP..105.1415P 269. Vincent, A., N. E. Piskunov, and I. Tuominen: 1993. Surface imaging of eclipsing binary stars. I. Tech- niques.. A&A278, 523, 33 citations, https://ui.adsabs.harvard.edu/abs/1993A&A...278..523V 270. Smirnov, O. M. and N. E. Piskunov: 1993. Image Processing on Your Desktop with pcIPS. International Amateur-Professional Photoelectric Photometry Communications 53, 16, 0 citations, https://ui.adsabs.harvard.edu/abs/1993IAPPP..53...16S 271. Smirnov, O. M. and N. E. Piskunov: 1993. A New Programming Metaphor For Image Processing Procedures. Astronomical Data Analysis Software and Systems II 52, 208, 4 citations, https://ui.adsabs.harvard.edu/abs/1993ASPC...52..208S 272. Smirnov, O. M. and N. E. Piskunov: 1993. PcIPS 2.0: Powerful Multiprofile Image Processing Implemented On PCs. Astronomical Data Analysis Software and Systems II 52, 259, 3 citations, https://ui.adsabs.harvard.edu/abs/1993ASPC...52..259S 273. Saar, S. H., N. E. Piskunov, and I. Tuominen: 1992. Magnetic Surface Images of the BY DRA Star HD 82558. Cool Stars, Stellar Systems, and the Sun 26, 255, 18 citations, https://ui.adsabs.harvard.edu/abs/1992ASPC...26..255S 274. Smirnov, O. M., N. E. Piskunov, V. P. Afanasyev, and A. I. Morozov: 1992. PC-IPS: Interactive System For Astronomical Image Processing. Astronomical Data Analysis Software and Systems I 25, 344, 26 citations, https://ui.adsabs.harvard.edu/abs/1992ASPC...25..344S 275. Piskunov, N. E.: 1992. SYNTH - a code for rapid spectral synthesis. Physics and Evolution of Stars: Stellar Magnetism 92, 18 citations, https://ui.adsabs.harvard.edu/abs/1992pess.conf...92P 276. Strassmeier, K. G., J. B. Rice, W. H. Wehlau, S. S. Vogt, A. P. Hatzes, I. Tuominen, N. E. Piskunov, T. Hackman, and M. Poutanen: 1991. Doppler imaging of hig-latitude SPOT activity on HD 26337.. A&A247, 130, 84 citations, https://ui.adsabs.harvard.edu/abs/1991A&A...247..130S 277. Hackman, T., N. E. Piskunov, M. Poutanen, K. G. Strassmeier, and I. Tuominen: 1991. Surface Imaging of Ei-Eridani. IAU Colloq. 130: The Sun and Cool Stars. Activity, Magnetism, Dynamos 380, 321, 6 citations, DOI:10.1007/3-540-53955-7_148, https://ui.adsabs.harvard.edu/abs/1991LNP...380..321H 278. Piskunov, N. E.: 1991. The Art of Surface Imaging. IAU Colloq. 130: The Sun and Cool Stars. Activity, Magnetism, Dynamos 380, 309, 28 citations, DOI:10.1007/3-540-53955-7_147, https://ui.adsabs.harvard.edu/abs/1991LNP...380..309P 279. Kulkova, L. I., N. E. Piskunov, and N. L. Svyatoslavskij: 1991. The second generation automated system for spectrum processing in the Astronomical council of the Academy of sciences of USSR. Nauchnye Informatsii 70, 56, 0 citations, https://ui.adsabs.harvard.edu/abs/1991NInfo..70...56K 280. Piskunov, N. E. and W. H. Wehlau: 1990. Mapping stellar surfaces from spectra of medium resolution. A&A233, 497, 21 citations, https://ui.adsabs.harvard.edu/abs/1990A&A...233..497P 281. Piskunov, N. E., I. Tuominen, and O. Vilhu: 1990. Surface imaging of late-type stars.. A&A230, 363, 139 citations, https://ui.adsabs.harvard.edu/abs/1990A&A...230..363P 282. Piskunov, N. E.: 1990. The surface imaging of the stars.. Mem. Soc. Astron. Italiana61, 577, 8 citations, https://ui.adsabs.harvard.edu/abs/1990MmSAI..61..577P 283. Tuominen, I., N. E. Piskunov, D. Moss, and A. Brandenburg: 1990. Surface Imaging of Giant Stars and Nonlinear Dynamos. Cool Stars, Stellar Systems, and the Sun 9, 73, 1 citations, https://ui.adsabs.harvard.edu/abs/1990ASPC....9...73T 284. Glagolevskij, Y. V., V. G. El’Kin, I. I. Romanyuk, and N. E. Piskunov: 1988. The estimation of 53 Cam magnetic field value by means of spectral line width analysis. Magnetic Stars 32, 2 citations, https://ui.adsabs.harvard.edu/abs/1988mast.conf...32G 285. Ryabchikova, T. A. and N. E. Piskunov: 1988. Abundance analysis of Hg-Mn star Herculis. Magnetic Stars 124, 3 citations, https://ui.adsabs.harvard.edu/abs/1988mast.conf..124R 286. Ryabchikova, T. A. and N. E. Piskunov: 1988. Abundance Analysis of the Mercury-Manganese Star Phi Herculis. Elemental Abundance Analyses 93, 1 citations, https://ui.adsabs.harvard.edu/abs/1988eaa..conf...93R 287. Lukin, V. Y. and N. E. Piskunov: 1986. Service programmes expanding possibilities of programming in FORTRAN language in OS ES. Nauchnye Informatsii 59, 89, 0 citations, https://ui.adsabs.harvard.edu/abs/1986NInfo..59...89L 288. Lukin, V. Y., K. N. Mit’kin, and N. E. Piskunov: 1986. General principles of computer image processing. Nauchnye Informatsii 59, 99, 0 citations, https://ui.adsabs.harvard.edu/abs/1986NInfo..59...99L 289. Riabchikova, T. A. and N. E. Piskunov: 1986. Estimation of Stellar Surface Magnetic Fields by the Curve- Of Method. IAU Colloq. 90: Upper Main Sequence Stars with Anomalous Abundances 125, 45, 5 citations, DOI:10.1007/978-94-009-4714-6_8, https://ui.adsabs.harvard.edu/abs/1986ASSL..125...45R 290. Grishin, M. P., S. M. Kurbanov, S. V. Pakhomov, N. E. Piskunov, and N. L. Sviatoslavskii: 1985. An automated astronomical image processor. Soviet Astronomy Letters 11, 335, 0 citations, https://ui.adsabs.harvard.edu/abs/1985SvAL...11..335G 291. Glagolevskij, Y. V., N. E. Piskunov, and V. L. Khokhlova: 1985. Investigation of the AP star alpha2 CVn magnetic field geometry from circular polarization profiles of metallic lines.. Pisma v Astronomicheskii Zhurnal 11, 371, 5 citations, https://ui.adsabs.harvard.edu/abs/1985PAZh...11..371G 292. Glagolevskii, Y. V., N. E. Piskunov, and V. L. Khokhlova: 1985. Magnetic Field Geometry of ALPHA-2- CANUM-VENATICORUM Derived from Circular Polarization Profiles of Metal Lines. Soviet Astronomy Letters 11, 154, 5 citations, https://ui.adsabs.harvard.edu/abs/1985SvAL...11..154G 293. Piskunov, N. E.: 1985. The magnetic field geometry of AP stars - A solution algorithm. Pisma v Astro- nomicheskii Zhurnal 11, 44, 5 citations, https://ui.adsabs.harvard.edu/abs/1985PAZh...11...44P 294. Piskunov, N. E.: 1985. The Magnetic Field Geometry of Ap-Stars - a Solution Algorithm. Soviet Astronomy Letters 11, 18, 11 citations, https://ui.adsabs.harvard.edu/abs/1985SvAL...11...18P 295. Grishin, M. P., S. M. Kurbanov, S. V. Pakhomov, N. E. Piskunov, and N. L. Svyatoslavskij: 1985. Automated System for Astronomical Image Processing. Pisma v Astronomicheskii Zhurnal 11, 793, 0 citations, https://ui.adsabs.harvard.edu/abs/1985PAZh...11..793G 296. Piskunov, N. E. and V. L. Khokhlova: 1984. Linear-polarization line profiles as an indicator of the magnetic field geometry of AP stars. Pisma v Astronomicheskii Zhurnal 10, 449, 4 citations, https://ui.adsabs.harvard.edu/abs/1984PAZh...10..449P 297. Piskunov, N. E. and V. L. Khokhlova: 1984. Linear Polarization Line Profiles as an Indicator of the Magnetic Field Geometry of Ap-Stars. Soviet Astronomy Letters 10, 187, 10 citations, https://ui.adsabs.harvard.edu/abs/1984SvAL...10..187P 298. Ryabchikova, T. A. and N. E. Piskunov: 1984. Estimate of stellar surface magnetic fields by the curve-of- growth method.. Magnetic Stars 27, 2 citations, https://ui.adsabs.harvard.edu/abs/1984mast.conf...27R 299. Piskunov, N. E. and V. L. Khokhlova: 1984. The study of magnetic field geometry of Ap stars by spectral line polarization profiles.. Magnetic Stars 20, 0 citations, https://ui.adsabs.harvard.edu/abs/1984mast.conf...20P 300. Piskunov, N. E. and V. L. Khokhlova: 1983. Numerical modeling of circular-polarization profiles for magnetic AP stars. Pisma v Astronomicheskii Zhurnal 9, 665, 6 citations, https://ui.adsabs.harvard.edu/abs/1983PAZh....9..665P 301. Piskunov, N. E. and V. L. Khokhlova: 1983. Numerical Modeling of Circular Polarization Profiles for Magnetic Ap-Stars. Soviet Astronomy Letters 9, 346, 12 citations, https://ui.adsabs.harvard.edu/abs/1983SvAL....9..346P 302. Piskunov, N. E., D. A. Ptitsyn, T. A. Ryabchikova, and V. L. Khoklova: 1983. A Spectrogram Reducing System Based on the Microdensitometer MDM-6 Joyce Loebl Coupled with the Minicomputer NOVA3/12. Nauchnye Informatsii 54, 45, 3 citations, https://ui.adsabs.harvard.edu/abs/1983NInfo..54...45P 303. Wehlau, W., J. Rice, N. E. Piskunov, and V. L. Khokhlova: 1982. Mapping of iron and chromium on the surface of the AP star Epsilon Ursae Majoris. Soviet Astronomy Letters 8, 15, 19 citations, https://ui.adsabs.harvard.edu/abs/1982SvAL....8...15W 304. Piskunov, N. E.: 1982. The procedure system for files menagement in OS ES. Nauchnye Informatsii 31, 111, 0 citations, https://ui.adsabs.harvard.edu/abs/1982NInfo..31..111P 305. Piskunov, N. E.: 1982. The procedure system for files management in OS ES. Nauchnye Informatsii 51, 111, 0 citations, https://ui.adsabs.harvard.edu/abs/1982NInfo..51..111P 306. Rice, J., W. Wehlau, V. L. Khokhlova, and N. E. Piskunov: 1981. The distribution of iron and chromium over the surface of Epsilon UMa. Liege International Astrophysical Colloquia 23, 265, 4 citations, https://ui.adsabs.harvard.edu/abs/1981LIACo..23..265R 307. Barklem, P. and N. Piskunov: 2016. Hlinop: April 2016 Release. Zenodo 1 citations, DOI:10.5281/zenodo.50215, https://ui.adsabs.harvard.edu/abs/2016zndo.....50215B