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NASA's Goddard Space Flight Center Laboratory for High Energy
1 NASA’s Goddard Space Flight Center Laboratory for High Energy Astrophysics Greenbelt, Maryland 20771 @S0002-7537~99!00301-7# This report covers the period from July 1, 1997 to June 30, Toshiaki Takeshima, Jane Turner, Ken Watanabe, Laura 1998. Whitlock, and Tahir Yaqoob. This Laboratory’s scientific research is directed toward The following investigators are University of Maryland experimental and theoretical research in the areas of X-ray, Scientists: Drs. Keith Arnaud, Manuel Bautista, Wan Chen, gamma-ray, and cosmic-ray astrophysics. The range of inter- Fred Finkbeiner, Keith Gendreau, Una Hwang, Michael Loe- ests of the scientists includes the Sun and the solar system, wenstein, Greg Madejski, F. Scott Porter, Ian Richardson, stellar objects, binary systems, neutron stars, black holes, the Caleb Scharf, Michael Stark, and Azita Valinia. interstellar medium, normal and active galaxies, galaxy clus- Visiting scientists from other institutions: Drs. Vadim ters, cosmic-ray particles, and the extragalactic background Arefiev ~IKI!, Hilary Cane ~U. Tasmania!, Peter Gonthier radiation. Scientists and engineers in the Laboratory also ~Hope College!, Thomas Hams ~U. Seigen!, Donald Kniffen serve the scientific community, including project support ~Hampden-Sydney College!, Benzion Kozlovsky ~U. Tel such as acting as project scientists and providing technical Aviv!, Richard Kroeger ~NRL!, Hideyo Kunieda ~Nagoya assistance to various space missions. Also at any one time, U.!, Eugene Loh ~U. Utah!, Masaki Mori ~Miyagi U.!, Rob- there are typically between twelve and eighteen graduate stu- ert Nemiroff ~Mich. Tech. U.!, Hagai Netzer ~U. Tel Aviv!, dents involved in Ph.D. research work in this Laboratory. Yasushi Ogasaka ~JSPS!, Lev Titarchuk ~George Mason U.!, Currently these are graduate students from Catholic U., Stan- Alan Tylka ~NRL!, Robert Warwick ~U. -
METEOR CSILLAGÁSZATI ÉVKÖNYV 2019 Meteor Csillagászati Évkönyv 2019
METEOR CSILLAGÁSZATI ÉVKÖNYV 2019 meteor csillagászati évkönyv 2019 Szerkesztette: Benkő József Mizser Attila Magyar Csillagászati Egyesület www.mcse.hu Budapest, 2018 Az évkönyv kalendárium részének összeállításában közreműködött: Tartalom Bagó Balázs Görgei Zoltán Kaposvári Zoltán Kiss Áron Keve Kovács József Bevezető ....................................................................................................... 7 Molnár Péter Sánta Gábor Kalendárium .............................................................................................. 13 Sárneczky Krisztián Szabadi Péter Cikkek Szabó Sándor Szőllősi Attila Zsoldos Endre: 100 éves a Nemzetközi Csillagászati Unió ........................191 Zsoldos Endre Maria Lugaro – Kereszturi Ákos: Elemkeletkezés a csillagokban.............. 203 Szabó Róbert: Az OGLE égboltfelmérés 25 éve ........................................218 A kalendárium csillagtérképei az Ursa Minor szoftverrel készültek. www.ursaminor.hu Beszámolók Mizser Attila: A Magyar Csillagászati Egyesület Szakmailag ellenőrizte: 2017. évi tevékenysége .........................................................................242 Szabados László Kiss László – Szabó Róbert: Az MTA CSFK Csillagászati Intézetének 2017. évi tevékenysége .........................................................................248 Petrovay Kristóf: Az ELTE Csillagászati Tanszékének működése 2017-ben ............................................................................ 262 Szabó M. Gyula: Az ELTE Gothard Asztrofi zikai Obszervatórium -
The Maunder Minimum and the Variable Sun-Earth Connection
The Maunder Minimum and the Variable Sun-Earth Connection (Front illustration: the Sun without spots, July 27, 1954) By Willie Wei-Hock Soon and Steven H. Yaskell To Soon Gim-Chuan, Chua Chiew-See, Pham Than (Lien+Van’s mother) and Ulla and Anna In Memory of Miriam Fuchs (baba Gil’s mother)---W.H.S. In Memory of Andrew Hoff---S.H.Y. To interrupt His Yellow Plan The Sun does not allow Caprices of the Atmosphere – And even when the Snow Heaves Balls of Specks, like Vicious Boy Directly in His Eye – Does not so much as turn His Head Busy with Majesty – ‘Tis His to stimulate the Earth And magnetize the Sea - And bind Astronomy, in place, Yet Any passing by Would deem Ourselves – the busier As the Minutest Bee That rides – emits a Thunder – A Bomb – to justify Emily Dickinson (poem 224. c. 1862) Since people are by nature poorly equipped to register any but short-term changes, it is not surprising that we fail to notice slower changes in either climate or the sun. John A. Eddy, The New Solar Physics (1977-78) Foreword By E. N. Parker In this time of global warming we are impelled by both the anticipated dire consequences and by scientific curiosity to investigate the factors that drive the climate. Climate has fluctuated strongly and abruptly in the past, with ice ages and interglacial warming as the long term extremes. Historical research in the last decades has shown short term climatic transients to be a frequent occurrence, often imposing disastrous hardship on the afflicted human populations. -
Chemical Composition of the RS Cvn-Type Star 33 Piscium
Baltic Astronomy, vol. 20, 53–63, 2011 CHEMICAL COMPOSITION OF THE RS CVn-TYPE STAR 33 PISCIUM G. Bariseviˇcius1, G. Tautvaiˇsien˙e1, S. Berdyugina2, Y. Chorniy1 and I. Ilyin3 1 Institute of Theoretical Physics and Astronomy, Vilnius University, Goˇstauto 12, Vilnius, LT-01108, Lithuania 2 Kiepenheuer Institut f¨ur Sonnenphysik, Sch¨oneckstr. 6, D-79104 Freiburg, Germany 3 Astrophysical Institute Potsdam, An der Sternwarte 16, Potsdam D-14482, Germany Received: 2011 March 7; accepted 2011 March 25 Abstract. Abundances of 22 chemical elements, including the key elements and isotopes such as 12C, 13C, N and O, are investigated in the spectrum of 33 Psc, a single-lined RS CVn-type binary of low magnetic activity. The high resolution spectra were observed on the Nordic Optical Telescope and analyzed with the MARCS model atmospheres. The following main parameters have been determined: Teff = 4750 K, log g = 2.8, [Fe/H] = –0.09, [C/Fe] = –0.04, [N/Fe] = 0.23, [O/Fe] = 0.05, C/N = 2.14, 12C/13C = 30, which show the first-dredge-up mixing signatures and no extra-mixing. Key words: stars: RS CVn binaries, abundances – stars: individual (33 Psc = HD 28)) 1. INTRODUCTION This is the third paper in a series dedicated to a detailed study of photospheric abundances in RS CVn stars (Tautvaiˇsien˙eet al. 2010; Bariseviˇcius et al. 2010, hereafter Papers I and II) with the main aim to get the carbon isotope 12C/13C and C/N ratios in these chromospherically active stars. We plan to investigate correlations between the abundance alterations of chemical elements in the atmo- spheres of these stars and their physical macro parameters, such as the speed of rotation and the magnetic field. -
Case 20-32299-KLP Doc 208 Filed 06/01/20 Entered 06/01/20 16
Case 20-32299-KLP Doc 208 Filed 06/01/20 Entered 06/01/20 16:57:32 Desc Main Document Page 1 of 137 Case 20-32299-KLP Doc 208 Filed 06/01/20 Entered 06/01/20 16:57:32 Desc Main Document Page 2 of 137 Exhibit A Case 20-32299-KLP Doc 208 Filed 06/01/20 Entered 06/01/20 16:57:32 Desc Main Document Page 3 of 137 Exhibit A1 Served via Overnight Mail Name Attention Address 1 Address 2 City State Zip Country Aastha Broadcasting Network Limited Attn: Legal Unit213 MezzanineFl Morya LandMark1 Off Link Road, Andheri (West) Mumbai 400053 IN Abs Global LTD Attn: Legal O'Hara House 3 Bermudiana Road Hamilton HM08 BM Abs-Cbn Global Limited Attn: Legal Mother Ignacia Quezon City Manila PH Aditya Jain S/O Sudhir Kumar Jain Attn: Legal 12, Printing Press Area behind Punjab Kesari Wazirpur Delhi 110035 IN AdminNacinl TelecomunicacionUruguay Complejo Torre De Telecomuniciones Guatemala 1075. Nivel 22 HojaDeEntrada 1000007292 5000009660 Montevideo CP 11800 UY Advert Bereau Company Limited Attn: Legal East Legon Ars Obojo Road Asafoatse Accra GH Africa Digital Network Limited c/o Nation Media Group Nation Centre 7th Floor Kimathi St PO Box 28753-00100 Nairobi KE Africa Media Group Limited Attn: Legal Jamhuri/Zaramo Streets Dar Es Salaam TZ Africa Mobile Network Communication Attn: Legal 2 Jide Close, Idimu Council Alimosho Lagos NG Africa Mobile Networks Cameroon Attn: Legal 131Rue1221 Entree Des Hydrocarbures Derriere Star Land Hotel Bonapriso-Douala Douala CM Africa Mobile Networks Cameroon Attn: Legal BP12153 Bonapriso Douala CM Africa Mobile Networks Gb, -
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Baltic Astronomy, vol. 19, 95{110, 2010 CHEMICAL COMPOSITION OF THE RS CVn-TYPE STAR LAMBDA ANDROMEDAE G. Tautvaiˇsien_e1, G. Bariseviˇcius1, S. Berdyugina2, Y. Chorniy1 and I. Ilyin3 1 Institute of Theoretical Physics and Astronomy, Vilnius University, Goˇstauto12, Vilnius LT-01108, Lithuania 2 Kiepenheuer Institut f¨urSonnenphysik, Sch¨oneckstrasse 6, Freiburg D-79104, Germany 3 Astrophysical Institute Potsdam, An der Sternwarte 16, Potsdam D-14482, Germany Received: 2010 June 8; accepted: 2010 June 15 Abstract. Photospheric parameters and chemical composition are deter- mined for the single-lined chromospherically active RS CVn-type star λ And (HD 222107). From the high resolution spectra obtained on the Nordic Optical Telescope, abundances of 22 chemical elements and isotopes, including such key elements as 12C, 13C, N and O, were investigated. The differential line analysis with the MARCS model atmospheres gives Teff = 4830 K, log g = 2.8, [Fe/H] = {0.53, [C/Fe] = 0.09, [N/Fe] = 0.35, [O/Fe] = 0.45, C/N = 2.21, 12C/13C = 14. The 12C/13C ratio for a star of the RS CVn-type is determined for the first time, and its low value gives a hint that extra-mixing processes may start acting in low-mass chromospherically active stars below the bump of the luminosity function of red giants. Key words: stars: RS CVn binaries, abundances { stars: individual (λ And = HD 222107) 1. INTRODUCTION The RS CVn-type stars have been studied thoroughly since 1965 when their peculiar light curves were detected (Rodon´o1965; Chisari & Lacona 1965) and a new distinct class of binaries was named (Olivier 1974; Hall 1976). -
GEORGE HERBIG and Early Stellar Evolution
GEORGE HERBIG and Early Stellar Evolution Bo Reipurth Institute for Astronomy Special Publications No. 1 George Herbig in 1960 —————————————————————– GEORGE HERBIG and Early Stellar Evolution —————————————————————– Bo Reipurth Institute for Astronomy University of Hawaii at Manoa 640 North Aohoku Place Hilo, HI 96720 USA . Dedicated to Hannelore Herbig c 2016 by Bo Reipurth Version 1.0 – April 19, 2016 Cover Image: The HH 24 complex in the Lynds 1630 cloud in Orion was discov- ered by Herbig and Kuhi in 1963. This near-infrared HST image shows several collimated Herbig-Haro jets emanating from an embedded multiple system of T Tauri stars. Courtesy Space Telescope Science Institute. This book can be referenced as follows: Reipurth, B. 2016, http://ifa.hawaii.edu/SP1 i FOREWORD I first learned about George Herbig’s work when I was a teenager. I grew up in Denmark in the 1950s, a time when Europe was healing the wounds after the ravages of the Second World War. Already at the age of 7 I had fallen in love with astronomy, but information was very hard to come by in those days, so I scraped together what I could, mainly relying on the local library. At some point I was introduced to the magazine Sky and Telescope, and soon invested my pocket money in a subscription. Every month I would sit at our dining room table with a dictionary and work my way through the latest issue. In one issue I read about Herbig-Haro objects, and I was completely mesmerized that these objects could be signposts of the formation of stars, and I dreamt about some day being able to contribute to this field of study. -
Commission 27 of the I.A.U. Information Bulletin On
COMMISSION 27 OF THE I.A.U. INFORMATION BULLETIN ON VARIABLE STARS Nos. 2101 - 2200 1982 March - 1982 September EDITOR: B. SZEIDL, KONKOLY OBSERVATORY 1525 BUDAPEST, Box 67, HUNGARY HU ISSN 0374-0676 2101 PHOTOELECTRIC PHOTOMETRY OF THE ECLIPSING BINARY DM PERSEI C. Sezer 4 March 1982 2102 PHOTOELECTRIC OBSERVATION OF W UMa (BD +56d1400) E. Hamzaoglu, V. Keskin, T. Eker 8 March 1982 2103 PHOTOELECTRIC PHOTOMETRY OF Ap STARS IN THE GALACTIC CLUSTER NGC 2516: PRELIMINARY RESULTS P. North, F. Rufener, P. Bartholdi 8 March 1982 2104 BV PHOTOMETRY OF BETELGEUSE OCT. 1979 TO APR. 1981 K. Krisciunas 8 March 1982 2105 ON THE NOVA-LIKE OBJECTS IN THE CENTRAL REGION OF M31 A.S. Sharov 9 March 1982 2106 HD 65227: A NEW SHORT PERIOD CEPHEID OF VERY SMALL AMPLITUDE O.J. Eggen 12 March 1982 2107 1981 UBVR PHOTOMETRIC OBSERVATIONS OF ER Vul M. Zeilik, R. Elston, G. Henson, P. Schmolke, P. Smith 12 March 1982 2108 PHOTOELECTRIC OBSERVATIONS OF VW CEPHEI T. Abe 15 March 1982 2109 29 DRACONIS: A NEW VARIABLE STAR D.S. Hall, G.W. Henry, H. Louth, Th.R. Renner, S.N. Shore 17 March 1982 2110 HD 26337: A NEW RS CVn VARIABLE STAR F.C. Fekel, D.S. Hall, G.W. Henry, H.J. Landis, Th.R. Renner 17 March 1982 2111 HD 136905: A NEW RS CVn VARIABLE STAR E.W. Burke, J.E. Baker, F.C. Fekel, D.S. Hall, G.W. Henry 17 March 1982 2112 VARIABLE STARS IN THE NORTHERN LUMINOUS STARS CATALOGUES W.P. Bidelman 17 March 1982 2113 CENTRAL STAR OF PLANETARY NEBULA NGC 2346: NEW ECLIPSING BINARY L. -
The Agb Newsletter
THE AGB NEWSLETTER An electronic publication dedicated to Asymptotic Giant Branch stars and related phenomena Official publication of the IAU Working Group on Abundances in Red Giants No. 168 — 6 July 2011 http://www.astro.keele.ac.uk/AGBnews Editors: Jacco van Loon and Albert Zijlstra Editorial Dear Colleagues, It is a pleasure to present you the 168th issue of the AGB Newsletter. There are in particular a lot of Spitzer, Herschel, and other mid-IR results, abundances and nucleosynthesis, and results on pulsating variables, dust, symbiotic binaries and the progenitors of SNe of type Ia, and some (other) weird classes of objects. And more. Bowshocks, surprising results about nearby galaxies and important results on the most distant ones... To celebrate Dr. Shuji Deguchi’s achievements, a very interesting meeting on evolved stars and astrophysical masers is organised to take place in Hong Kong later this year. The next issue is planned to be distributed in early August 2011. Editorially Yours, Jacco van Loon and Albert Zijlstra Food for Thought This month’s thought-provoking statement is: What happens when the pulsation period approaches the thermal timescale? Reactions to this statement or suggestions for next month’s statement can be e-mailed to [email protected] (please state whether you wish to remain anonymous) 1 Refereed Journal Papers Chemical composition of the RS CVn-type star 33 Piscium G. Bariseviˇcius1, G. Tautvaiˇsien˙e1, S. Berdyugina2, Y. Chorniy1 and I. Ilyin3 1Institute of Theoretical Physics and Astronomy, Vilnius University, Goˇstauto 12, Vilnius, LT-01108, Lithuania 2Kiepenheuer Institut f¨ur Sonnenphysik, Sch¨oneckstraße 6, D-79104 Freiburg, Germany 3Astrophysical Institute Potsdam, an der Sternwarte 16, D-14482 Potsdam, Germany Abundances of 22 chemical elements, including the key elements and isotopes such as 12C, 13C, N and O, are inves- tigated in the spectrum of 33 Psc, a single-lined RS CVn-type binary of low magnetic activity. -
Jahresbericht 2010 Mitteilungen Der Astronomischen Gesellschaft 94 (2013), 583–627
Jahresbericht 2010 Mitteilungen der Astronomischen Gesellschaft 94 (2013), 583–627 Potsdam Leibniz-Institut für Astrophysik Potsdam (AIP) An der Sternwarte 16, D-14482 Potsdam Tel. 03317499-0, Telefax: 03317499-267 E-Mail: [email protected] WWW: http://www.aip.de Beobachtungseinrichtungen Robotisches Observatorium STELLA Observatorio del Teide, Izaña E-38205 La Laguna, Teneriffa, Spanien Tel. +34 922 329 138 bzw. 03317499-633 LOFAR-Station DE604 Potsdam-Bornim D-14469 Potsdam Tel. 03317499-291, Telefax: 03317499-352 Observatorium für Solare Radioastronomie Tremsdorf D-14552 Tremsdorf Tel. 03317499-291, Telefax: 03317499-352 Sonnenobservatorium Einsteinturm Telegrafenberg, D-14473 Potsdam Tel. 0331288-2303/-2304, Telefax: 03317499-524 0 Allgemeines Das Leibniz-Institut für Astrophysik Potsdam (AIP) ist eine Stiftung bürgerlichen Rechts zum Zweck der wissenschaftlichen Forschung auf dem Gebiet der Astrophysik. Als außer- universitäre Forschungseinrichtung ist es Mitglied der Leibniz-Gemeinschaft. Seinen For- schungsauftrag führt das AIP im Rahmen von nationalen und internationalen Kooperatio- nen aus. Die Beteiligung am Large Binocular Telescope auf dem Mt Graham in Arizona, dem größten optischen Teleskop der Welt, verdient hierbei besondere Erwähnung. Neben seinen Forschungsarbeiten profiliert sich das Institut zunehmend als Kompetenzzentrum im Bereich der Entwicklung von Forschungstechnologie. Vier gemeinsame Berufungen mit der Universität Potsdam und mehrere außerplanmäßige Professuren und Privatdozenturen an Universitäten in der Region und -
Macrocosmo Nº33
HA MAIS DE DOIS ANOS DIFUNDINDO A ASTRONOMIA EM LÍNGUA PORTUGUESA K Y . v HE iniacroCOsmo.com SN 1808-0731 Ano III - Edição n° 33 - Agosto de 2006 * t i •■•'• bSÈlÈWW-'^Sif J fé . ’ ' w s » ws» ■ ' v> í- < • , -N V Í ’\ * ' "fc i 1 7 í l ! - 4 'T\ i V ■ }'- ■t i' ' % r ! ■ 7 ji; ■ 'Í t, ■ ,T $ -f . 3 j i A 'A ! : 1 l 4/ í o dia que o ceu explodiu! t \ Constelação de Andrômeda - Parte II Desnudando a princesa acorrentada £ Dicas Digitais: Softwares e afins, ATM, cursos online e publicações eletrônicas revista macroCOSMO .com Ano III - Edição n° 33 - Agosto de I2006 Editorial Além da órbita de Marte está o cinturão de asteróides, uma região povoada com Redação o material que restou da formação do Sistema Solar. Longe de serem chamados como simples pedras espaciais, os asteróides são objetos rochosos e/ou metálicos, [email protected] sem atmosfera, que estão em órbita do Sol, mas são pequenos demais para serem considerados como planetas. Até agora já foram descobertos mais de 70 Diretor Editor Chefe mil asteróides, a maior parte situados no cinturão de asteróides entre as órbitas Hemerson Brandão de Marte e Júpiter. [email protected] Além desse cinturão podemos encontrar pequenos grupos de asteróides isolados chamados de Troianos que compartilham a mesma órbita de Júpiter. Existem Editora Científica também aqueles que possuem órbitas livres, como é o caso de Hidalgo, Apolo e Walkiria Schulz Ícaro. [email protected] Quando um desses asteróides cruza a nossa órbita temos as crateras de impacto. A maior cratera visível de nosso planeta é a Meteor Crater, com cerca de 1 km de Diagramadores diâmetro e 600 metros de profundidade. -
Index to JRASC Volumes 61-90 (PDF)
THE ROYAL ASTRONOMICAL SOCIETY OF CANADA GENERAL INDEX to the JOURNAL 1967–1996 Volumes 61 to 90 inclusive (including the NATIONAL NEWSLETTER, NATIONAL NEWSLETTER/BULLETIN, and BULLETIN) Compiled by Beverly Miskolczi and David Turner* * Editor of the Journal 1994–2000 Layout and Production by David Lane Published by and Copyright 2002 by The Royal Astronomical Society of Canada 136 Dupont Street Toronto, Ontario, M5R 1V2 Canada www.rasc.ca — [email protected] Table of Contents Preface ....................................................................................2 Volume Number Reference ...................................................3 Subject Index Reference ........................................................4 Subject Index ..........................................................................7 Author Index ..................................................................... 121 Abstracts of Papers Presented at Annual Meetings of the National Committee for Canada of the I.A.U. (1967–1970) and Canadian Astronomical Society (1971–1996) .......................................................................168 Abstracts of Papers Presented at the Annual General Assembly of the Royal Astronomical Society of Canada (1969–1996) ...........................................................207 JRASC Index (1967-1996) Page 1 PREFACE The last cumulative Index to the Journal, published in 1971, was compiled by Ruth J. Northcott and assembled for publication by Helen Sawyer Hogg. It included all articles published in the Journal during the interval 1932–1966, Volumes 26–60. In the intervening years the Journal has undergone a variety of changes. In 1970 the National Newsletter was published along with the Journal, being bound with the regular pages of the Journal. In 1978 the National Newsletter was physically separated but still included with the Journal, and in 1989 it became simply the Newsletter/Bulletin and in 1991 the Bulletin. That continued until the eventual merger of the two publications into the new Journal in 1997.