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FY08 Technical Papers by GSMTPO Staff
AURA/NOAO ANNUAL REPORT FY 2008 Submitted to the National Science Foundation July 23, 2008 Revised as Complete and Submitted December 23, 2008 NGC 660, ~13 Mpc from the Earth, is a peculiar, polar ring galaxy that resulted from two galaxies colliding. It consists of a nearly edge-on disk and a strongly warped outer disk. Image Credit: T.A. Rector/University of Alaska, Anchorage NATIONAL OPTICAL ASTRONOMY OBSERVATORY NOAO ANNUAL REPORT FY 2008 Submitted to the National Science Foundation December 23, 2008 TABLE OF CONTENTS EXECUTIVE SUMMARY ............................................................................................................................. 1 1 SCIENTIFIC ACTIVITIES AND FINDINGS ..................................................................................... 2 1.1 Cerro Tololo Inter-American Observatory...................................................................................... 2 The Once and Future Supernova η Carinae...................................................................................................... 2 A Stellar Merger and a Missing White Dwarf.................................................................................................. 3 Imaging the COSMOS...................................................................................................................................... 3 The Hubble Constant from a Gravitational Lens.............................................................................................. 4 A New Dwarf Nova in the Period Gap............................................................................................................ -
Probing the Mass-Loss History of the Unusual Mira Variable R Hydrae Through Its Infrared CO Wind
A&A 484, 401–412 (2008) Astronomy DOI: 10.1051/0004-6361:20079312 & c ESO 2008 Astrophysics Probing the mass-loss history of the unusual Mira variable R Hydrae through its infrared CO wind L. Decin1,2,, L. Blomme1, M. Reyniers1,, N. Ryde3,4,K.H.Hinkle5, and A. de Koter2 1 Department of Physics and Astronomy, Institute of Astronomy, K.U. Leuven, Celestijnenlaan 200D, 3001 Leuven, Belgium e-mail: [email protected] 2 Sterrenkundig Instituut Anton Pannekoek, University of Amsterdam, Kruislaan 4031098 Amsterdam, The Netherlands 3 Department of Astronomy and Space Physics, Uppsala University, Box 515, 5120 Uppsala, Sweden 4 Lund Observatory, Box 43, 22100 Lund, Sweden 5 National Optical Observatories, PO Box 26732, Tucson, ZA 85726, USA Received 21 December 2007 / Accepted 23 March 2008 ABSTRACT Context. The unusual Mira variable R Hya is well known for its declining period between ad 1770 and 1950, which is possibly attributed to a recent thermal pulse. Aims. The goal of this study is to probe the circumstellar envelope (CSE) around R Hya and to check for a correlation between the derived density structure and the declining period. Methods. We investigate the CSE around R Hya by performing an in-depth analysis of (1.) the photospheric light scattered by three vibration-rotation transitions in the fundamental band of CO at 4.6 µm; and (2.) the pure rotational CO J = 1−0 through 6−5 emission lines excited in the CSE. The vibrational-rotational lines trace the inner CSE within 3.5, whereas the pure rotational CO lines are sensitive probes of the cooler gas further out in the CSE. -
Disertaciones Astronómicas Boletín Número 55 De Efemérides Astronómicas 28 De Octubre De 2020
Disertaciones astronómicas Boletín Número 55 de efemérides astronómicas 28 de octubre de 2020 Realiza Luis Fernando Ocampo O. ([email protected]). Noticias de la semana. Osiris–Rex y el astroide Bennu. Imagen 1: Estas imágenes muestran los cuatro sitios de recolección de muestras candidatos en el asteroide Bennu: Nightingale, Kingfisher, Osprey y Sandpiper. Imagen: NASA / / Goddard / Universidad de Arizona. La misión OSIRIS-REx de la NASA está realizó un almacenamiento temprano el martes 27 de octubre de la gran muestra que recolectó la semana pasada de la superficie del asteroide Bennu para proteger y devolver la mayor cantidad posible de muestra. Su capacidad es hasta 2 kg. El 22 de octubre, el equipo de la misión OSIRIS-REx recibió imágenes que mostraban que la cabeza recolectora de la nave espacial rebosaba de material recolectado de la superficie de Bennu, muy por encima del requisito de la misión de dos onzas (60 gramos), y que algunas de estas partículas parecían estar escapar lentamente del cabezal de recolección, llamado Mecanismo de adquisición de muestras Touch-And-Go (TAGSAM). Una solapa de mylar en el TAGSAM permite que el material entre fácilmente en el cabezal del colector y debe sellar para cerrar una vez que las partículas pasan. Sin embargo, las rocas más grandes que no pasaron completamente a través de la solapa hacia el TAGSAM parecen haber abierto esta solapa, lo que permitió que se filtraran fragmentos de la muestra. Debido a que el primer evento de recolección de muestras fue tan exitoso, la Dirección de Misiones Científicas de la NASA le ha dado al equipo de la misión el visto bueno para acelerar el almacenamiento de muestras, originalmente programado para el 2 de noviembre, en la Cápsula de Retorno de Muestras (SRC) de la nave espacial para minimizar una mayor pérdida de muestras. -
Transactions 1905
THE Royal Astronomical Society of Canada TRANSACTIONS FOR 1905 (INCLUDING SELECTED PAPERS AND PROCEEDINGS) EDITED BY C. A CHANT. TORONTO: ROYAL ASTRONOMICAL PRINT, 1906. The Royal Astronomical Society of Canada. THE Royal Astronomical Society of Canada TRANSACTIONS FOR 1905 (INCLUDING SELECTED PAPERS AND PROCEEDINGS) EDITED BY C. A CHANT. TORONTO: ROYAL ASTRONOMICAL PRINT, 1906. TABLE OF CONTENTS. The Dominion Observatory, Ottawa (Frontispiece) List of Officers, Fellows and A ssociates..................... - - 3 Treasurer’s R eport.....................--------- 12 President’s Address and Summary of Work ------ 13 List of Papers and Lectures, 1905 - - - - ..................... 26 The Dominion Observatory at Ottawa - - W. F. King 27 Solar Spots and Magnetic Storms for 1904 Arthur Harvey 35 Stellar Legends of American Indians - - J. C. Hamilton 47 Personal Profit from Astronomical Study - R. Atkinson 51 The Eclipse Expedition to Labrador, August, 1905 A. T. DeLury 57 Gravity Determinations in Labrador - - Louis B. Stewart 70 Magnetic and Meteorological Observations at North-West River, Labrador - - - - R. F. Stupart 97 Plates and Filters for Monochromatic and Three-Color Photography of the Corona J. S. Plaskett 89 Photographing the Sun and Moon with a 5-inch Refracting Telescope . .......................... D. B. Marsh 108 The Astronomy of Tennyson - - - - John A. Paterson 112 Achievements of Nineteenth Century Astronomy , L. H. Graham 125 A Lunar Tide on Lake Huron - - - - W. J. Loudon 131 Contributions...............................................J. Miller Barr I. New Variable Stars - - - - - - - - - - - 141 II. The Variable Star ξ Bootis -------- 143 III. The Colors of Helium Stars - - - ..................... 144 IV. A New Problem in Solar Physics ------ 146 Stellar Classification ------ W. Balfour Musson 151 On the Possibility of Fife in Other Worlds A. -
ESO Staff Papers Published in 07/2011 Extracted from the ESO Telescope Bibliography Maintained by the Library Subscribe to the ESO Telbib RSS Feed
ESO staff papers published in 07/2011 extracted from the ESO Telescope Bibliography maintained by the library Subscribe to the ESO telbib RSS feed Cosmology | Galaxies and Galactic Nuclei | Interstellar Medium, Star Formation and Planetary Systems | Stellar Evolution | Miscellaneous | Papers without ESO data Cosmology | Galaxies and Galactic Nuclei | Interstellar Medium, Star Formation and Planetary Systems | Stellar Evolution | Miscellaneous: ESO authors + ESO observational data Cosmology The LABOCA survey of the Extended Chandra Deep Field-South - radio and mid-infrared counterparts to submillimetre galaxies Biggs, A.D., Ivison, R.J., Ibar, E., Wardlow, J.L., Dannerbauer, H., Smail, I., Walter, F., Weiß, A., Chapman, S.C., Coppin, K.E.K., De Breuck, C., Dickinson, M., Knudsen, K.K., Mainieri, V., Menten, K., & Papovich, C., 2011, MNRAS, 413, 2314 [ADS] Instruments: LABOCA A Photometric Redshift of z ~ 9.4 for GRB 090429B Cucchiara, A., Levan, A.J., Fox, D.B., Tanvir, N.R., Ukwatta, T.N., Berger, E., Krühler, T., Küpcü Yoldaş, A., Wu, X.F., Toma, K., Greiner, J., Olivares, F.E., Rowlinson, A., Amati, L., Sakamoto, T., Roth, K., Stephens, A., Fritz, A., Fynbo, J.P.U., Hjorth, J., Malesani, D., Jakobsson, P., Wiersema, K., O'Brien, P.T., Soderberg, A.M., Foley, R.J., Fruchter, A.S., Rhoads, J., Rutledge, R.E., Schmidt, B.P., Dopita, M.A., Podsiadlowski, P., Willingale, R., Wolf, C., Kulkarni, S.R., & D'Avanzo, P., 2011, ApJ, 736, 7 [ADS] Instruments: FORS2 A luminous quasar at a redshift of z = 7.085 Mortlock, D.J., Warren, S.J., Venemans, B.P., Patel, M., Hewett, P.C., McMahon, R.G., Simpson, C., Theuns, T., Gonzáles-Solares, E.A., Adamson, A., Dye, S., Hambly, N.C., Hirst, P., Irwin, M.J., Kuiper, E., Lawrence, A., & Röttgering, H.J.A., 2011, Natur, 474, 616 [ADS] Instruments: FORS2 Exploring the galaxy cluster-group transition regime at high redshifts. -
Executive Summary
The Boston University Astronomy Department Annual Report 2010 Chair: James Jackson Administrator: Laura Wipf 1 2 TABLE OF CONTENTS Executive Summary 5 Faculty and Staff 5 Teaching 6 Undergraduate Programs 6 Observatory and Facilities 8 Graduate Program 9 Colloquium Series 10 Alumni Affairs/Public Outreach 10 Research 11 Funding 12 Future Plans/Departmental Needs 13 APPENDIX A: Faculty, Staff, and Graduate Students 16 APPENDIX B: 2009/2010 Astronomy Graduates 18 APPENDIX C: Seminar Series 19 APPENDIX D: Sponsored Project Funding 21 APPENDIX E: Accounts Income Expenditures 25 APPENDIX F: Publications 27 Cover photo: An ultraviolet image of Saturn taken by Prof. John Clarke and his group using the Hubble Space Telescope. The oval ribbons toward the top and bottom of the image shows the location of auroral activity near Saturn’s poles. This activity is analogous to Earth’s aurora borealis and aurora australis, the so-called “northern” and “southern lights,” and is caused by energetic particles from the sun trapped in Saturn’s magnetic field. 3 4 EXECUTIVE SUMMARY associates authored or co-authored a total of 204 refereed, scholarly papers in the disciplines’ most The Department of Astronomy teaches science to prestigious journals. hundreds of non-science majors from throughout the university, and runs one of the largest astronomy degree The funding of the Astronomy Department, the Center programs in the country. Research within the for Space Physics, and the Institute for Astrophysical Astronomy Department is thriving, and we retain our Research was changed this past year. In previous years, strong commitment to teaching and service. only the research centers received research funding, but last year the Department received a portion of this The Department graduated a class of twelve research funding based on grant activity by its faculty. -
121012-AAS-221 Program-14-ALL, Page 253 @ Preflight
221ST MEETING OF THE AMERICAN ASTRONOMICAL SOCIETY 6-10 January 2013 LONG BEACH, CALIFORNIA Scientific sessions will be held at the: Long Beach Convention Center 300 E. Ocean Blvd. COUNCIL.......................... 2 Long Beach, CA 90802 AAS Paper Sorters EXHIBITORS..................... 4 Aubra Anthony ATTENDEE Alan Boss SERVICES.......................... 9 Blaise Canzian Joanna Corby SCHEDULE.....................12 Rupert Croft Shantanu Desai SATURDAY.....................28 Rick Fienberg Bernhard Fleck SUNDAY..........................30 Erika Grundstrom Nimish P. Hathi MONDAY........................37 Ann Hornschemeier Suzanne H. Jacoby TUESDAY........................98 Bethany Johns Sebastien Lepine WEDNESDAY.............. 158 Katharina Lodders Kevin Marvel THURSDAY.................. 213 Karen Masters Bryan Miller AUTHOR INDEX ........ 245 Nancy Morrison Judit Ries Michael Rutkowski Allyn Smith Joe Tenn Session Numbering Key 100’s Monday 200’s Tuesday 300’s Wednesday 400’s Thursday Sessions are numbered in the Program Book by day and time. Changes after 27 November 2012 are included only in the online program materials. 1 AAS Officers & Councilors Officers Councilors President (2012-2014) (2009-2012) David J. Helfand Quest Univ. Canada Edward F. Guinan Villanova Univ. [email protected] [email protected] PAST President (2012-2013) Patricia Knezek NOAO/WIYN Observatory Debra Elmegreen Vassar College [email protected] [email protected] Robert Mathieu Univ. of Wisconsin Vice President (2009-2015) [email protected] Paula Szkody University of Washington [email protected] (2011-2014) Bruce Balick Univ. of Washington Vice-President (2010-2013) [email protected] Nicholas B. Suntzeff Texas A&M Univ. suntzeff@aas.org Eileen D. Friel Boston Univ. [email protected] Vice President (2011-2014) Edward B. Churchwell Univ. of Wisconsin Angela Speck Univ. of Missouri [email protected] [email protected] Treasurer (2011-2014) (2012-2015) Hervey (Peter) Stockman STScI Nancy S. -
Gaia Data Release 2 Special Issue
A&A 623, A110 (2019) Astronomy https://doi.org/10.1051/0004-6361/201833304 & © ESO 2019 Astrophysics Gaia Data Release 2 Special issue Gaia Data Release 2 Variable stars in the colour-absolute magnitude diagram?,?? Gaia Collaboration, L. Eyer1, L. Rimoldini2, M. Audard1, R. I. Anderson3,1, K. Nienartowicz2, F. Glass1, O. Marchal4, M. Grenon1, N. Mowlavi1, B. Holl1, G. Clementini5, C. Aerts6,7, T. Mazeh8, D. W. Evans9, L. Szabados10, A. G. A. Brown11, A. Vallenari12, T. Prusti13, J. H. J. de Bruijne13, C. Babusiaux4,14, C. A. L. Bailer-Jones15, M. Biermann16, F. Jansen17, C. Jordi18, S. A. Klioner19, U. Lammers20, L. Lindegren21, X. Luri18, F. Mignard22, C. Panem23, D. Pourbaix24,25, S. Randich26, P. Sartoretti4, H. I. Siddiqui27, C. Soubiran28, F. van Leeuwen9, N. A. Walton9, F. Arenou4, U. Bastian16, M. Cropper29, R. Drimmel30, D. Katz4, M. G. Lattanzi30, J. Bakker20, C. Cacciari5, J. Castañeda18, L. Chaoul23, N. Cheek31, F. De Angeli9, C. Fabricius18, R. Guerra20, E. Masana18, R. Messineo32, P. Panuzzo4, J. Portell18, M. Riello9, G. M. Seabroke29, P. Tanga22, F. Thévenin22, G. Gracia-Abril33,16, G. Comoretto27, M. Garcia-Reinaldos20, D. Teyssier27, M. Altmann16,34, R. Andrae15, I. Bellas-Velidis35, K. Benson29, J. Berthier36, R. Blomme37, P. Burgess9, G. Busso9, B. Carry22,36, A. Cellino30, M. Clotet18, O. Creevey22, M. Davidson38, J. De Ridder6, L. Delchambre39, A. Dell’Oro26, C. Ducourant28, J. Fernández-Hernández40, M. Fouesneau15, Y. Frémat37, L. Galluccio22, M. García-Torres41, J. González-Núñez31,42, J. J. González-Vidal18, E. Gosset39,25, L. P. Guy2,43, J.-L. Halbwachs44, N. C. Hambly38, D. -
Inhaltsverzeichnis
Nachlass EDUARD SCHÖNFELD (1828-1891) Inhaltsverzeichnis Bearbeitet von Anne Hoffsümmer und Lea Korb Bonn, 2017 – 2018 zuletzt aktualisiert am 09.09.2020 Eduard Schönfeld wurde am 22.12.1828 in Hildburghausen geboren, wo er bis zu seinem Abitur 1847 die Schule besuchte. Er war Kind einer jüdischen Familie, trat jedoch nach seinem Schulabschluss dem evangelischen Glauben bei. Auf Anraten seines Vaters studierte Schönfeld zunächst Bauwesen, entschied sich aber nach kurzer Zeit für die Naturwissenschaften und begann, in Marburg bei dem Gauß-Schüler Christian Ludwig Gerling unter anderem Astronomie zu studieren. Nachdem Schönfeld auf einer Reise nach Bonn Bekanntschaft mit Friedrich Wilhelm August Argelander gemacht hatte, entschloss er sich, das Studium der Astronomie 1852 in Bonn fortzusetzen. Dort erhielt er schon ein Jahr später eine Stelle als Assistent, durch die er die Möglichkeit erhielt, gemeinsam mit Adalbert Krüger an der bekannten „Bonner Durchmusterung“, Argelanders großem Projekt, mitzuwirken. Mit einer Abhandlung über die Bahnelemente des Kleinplaneten Thetis promovierte Schönfeld 1854. Seine Habilitation folgte drei Jahre später. Eduard Schönfeld zog 1859 nach Mannheim, um dort die Stelle als Direktor der Mannheimer Sternwarte anzutreten. In der Mannheimer Zeit widmete er sich unter anderem der Bestimmung der Positionen von Nebelflecken mithilfe des Ringmikrometer. Eduard Schönfeld war Mitbegründer und Vorstandsmitglied der Astronomischen Gesellschaft sowie lange Jahre ihr Schriftführer und Herausgeber der Vierteljahrsschrift. Nach Argelanders Tod im Jahr 1875 übernahm Schönfeld dessen Stelle als Direktor der Bonner Sternwarte und ergänzte die Arbeit zur Bonner Durchmusterung, indem er die Bereiche -2°- -23° der südlichen Deklination erforschte. 1883 wurde er Geheimer Regierungsrat und war 1887/88 Rektor der Universität Bonn. -
Chapter 1 a Theoretical and Observational Overview of Brown
Chapter 1 A theoretical and observational overview of brown dwarfs Stars are large spheres of gas composed of 73 % of hydrogen in mass, 25 % of helium, and about 2 % of metals, elements with atomic number larger than two like oxygen, nitrogen, carbon or iron. The core temperature and pressure are high enough to convert hydrogen into helium by the proton-proton cycle of nuclear reaction yielding sufficient energy to prevent the star from gravitational collapse. The increased number of helium atoms yields a decrease of the central pressure and temperature. The inner region is thus compressed under the gravitational pressure which dominates the nuclear pressure. This increase in density generates higher temperatures, making nuclear reactions more efficient. The consequence of this feedback cycle is that a star such as the Sun spend most of its lifetime on the main-sequence. The most important parameter of a star is its mass because it determines its luminosity, ef- fective temperature, radius, and lifetime. The distribution of stars with mass, known as the Initial Mass Function (hereafter IMF), is therefore of prime importance to understand star formation pro- cesses, including the conversion of interstellar matter into stars and back again. A major issue regarding the IMF concerns its universality, i.e. whether the IMF is constant in time, place, and metallicity. When a solar-metallicity star reaches a mass below 0.072 M ¡ (Baraffe et al. 1998), the core temperature and pressure are too low to burn hydrogen stably. Objects below this mass were originally termed “black dwarfs” because the low-luminosity would hamper their detection (Ku- mar 1963). -
The CORALIE Survey for Southern Extrasolar Planets XVII
Astronomy & Astrophysics manuscript no. coralieXVII c ESO 2019 July 1, 2019 The CORALIE survey for southern extrasolar planets XVII. New and updated long period and massive planets ? ?? M. Marmier1, D. Segransan´ 1, S. Udry1, M. Mayor1, F. Pepe1, D. Queloz1, C. Lovis1, D. Naef1, N.C. Santos2;3;1, R. Alonso4;5;1, S. Alves8;1, S. Berthet1, B. Chazelas1, B-O. Demory9;1, X. Dumusque1, A. Eggenberger1, P. Figueira2;1, M. Gillon6;1, J. Hagelberg1, M. Lendl1, R. A. Mardling7;1, D. Megevand´ 1, M. Neveu1, J. Sahlmann1, D. Sosnowska1, M. Tewes10, and A. H.M.J. Triaud1 1 Observatoire astronomique de l’Universite´ de Geneve,` 51 ch. des Maillettes - Sauverny -, CH-1290 Versoix, Switzerland 2 Centro de Astrof´ısica, Universidade do Porto, Rua das Estrelas, 4150-762 Porto, Portugal 3 Departamento de F´ısica e Astronomia, Faculdade de Ciencias,ˆ Universidade do Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal 4 Instituto de Astrof´ısica de Canarias, C/ V´ıa Lactea´ S/N, E-38200 La Laguna, Spain 5 Departamento de Astrof´ısica, Universidad de La Laguna, E-38205 La Laguna, Spain 6 Universite´ de Liege,` Allee´ du 6 aoutˆ 17, Sart Tilman, Liege` 1, Belgium 7 School of Mathematical Sciences, Monash University, Victoria, 3800, Australia 8 Departamento de F´ısica, Universidade Federal do Rio Grande do Norte, 59072-970, Natal, RN., Brazil 9 Department of Earth, Atmospheric and Planetary Sciences, Department of Physics, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139, USA 10 Laboratoire d’astrophysique, Ecole Polytechnique Fed´ erale´ de Lausanne (EPFL), Observatoire de Sauverny, CH-1290 Versoix, Switzerland Received month day, year; accepted month day, year ABSTRACT Context. -
Among the Intrinsic Variables, the RV Tauri Stars Days
496 ASTRONOMY: PA YNE-GAPOSCHKIN AND BRENTON PROC. N. A. S. A STUDY OF THE RV TAURI VARIABLES By CECILIA PAYNE-GAPOSCHKIN AND VIRGINIA K. BRENTON HARVARD COLLEGE OBSERVATORY Communicated October 16, 1942 1. Definitions.-Among the intrinsic variables, the RV Tauri stars stand out with rather definite characteristics. Three principal criteria may be used for assigning stars to the class. (a) Successive minima differ in depth. Deep and shallow minima are conventionally called "primary" and "secondary." (b) Primary and secondary minima interchange phases at intervals. (c) The stars are variable in spectrum and in radial velocity. The spectrum is of Class F, G or K at maximum. The shortest known period is 38 days (EZ Aquilae), the longest is 146 days (R Scuti). Although the period usually assigned to these stars is that from one primary minimum to the next, a comparison with the velocity curve shows that the star undergoes a type of pulsation with one-half that period. The brighter RV Tauri stars have recently been studied on the Harvard collection of stellar photographs. Of the twenty-nine stars now assigned to the class, fourteen proved to be bright enough for intensive study. A discussion of about sixteen thousand observations of these stars has been completed,' and the present note is intended to summarize some of the physical results. 2. The Secondary Characteristics.-Many RV Tauri stars show rather marked irregularities in period, and though over a long interval a mean period can always be assigned, instantaneous elements for short intervals may require periods differing by one or two per cent.