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Uranometría Argentina Bicentenario
URANOMETRÍA ARGENTINA BICENTENARIO Reedición electrónica ampliada, ilustrada y actualizada de la URANOMETRÍA ARGENTINA Brillantez y posición de las estrellas fijas, hasta la séptima magnitud, comprendidas dentro de cien grados del polo austral. Resultados del Observatorio Nacional Argentino, Volumen I. Publicados por el observatorio 1879. Con Atlas (1877) 1 Observatorio Nacional Argentino Dirección: Benjamin Apthorp Gould Observadores: John M. Thome - William M. Davis - Miles Rock - Clarence L. Hathaway Walter G. Davis - Frank Hagar Bigelow Mapas del Atlas dibujados por: Albert K. Mansfield Tomado de Paolantonio S. y Minniti E. (2001) Uranometría Argentina 2001, Historia del Observatorio Nacional Argentino. SECyT-OA Universidad Nacional de Córdoba, Córdoba. Santiago Paolantonio 2010 La importancia de la Uranometría1 Argentina descansa en las sólidas bases científicas sobre la cual fue realizada. Esta obra, cuidada en los más pequeños detalles, se debe sin dudas a la genialidad del entonces director del Observatorio Nacional Argentino, Dr. Benjamin A. Gould. Pero nada de esto se habría hecho realidad sin la gran habilidad, el esfuerzo y la dedicación brindada por los cuatro primeros ayudantes del Observatorio, John M. Thome, William M. Davis, Miles Rock y Clarence L. Hathaway, así como de Walter G. Davis y Frank Hagar Bigelow que se integraron más tarde a la institución. Entre éstos, J. M. Thome, merece un lugar destacado por la esmerada revisión, control de las posiciones y determinaciones de brillos, tal como el mismo Director lo reconoce en el prólogo de la publicación. Por otro lado, Albert K. Mansfield tuvo un papel clave en la difícil confección de los mapas del Atlas. La Uranometría Argentina sobresale entre los trabajos realizados hasta ese momento, por múltiples razones: Por la profundidad en magnitud, ya que llega por vez primera en este tipo de empresa a la séptima. -
Newsletter Archive the Skyscraper April 2015
the vol. 42 no. 4 Skyscraper April 2015 AmAteur AstronomicAl society of rhode islAnd 47 PeePtoAd roAd north scituAte, rhode islAnd 02857 www.theskyscrapers.org In this issue Friday, April 10, 7:00pm 2 President’s Message at Seagrave Memorial Observatory 3 The Sun, Moon & Comparing Antarctic geology to what we can Planets in April find on Mars by Jay Dickson 4 The Cold Never Bothered Me Anyway The McMurdo Dry Valleys in Antarctica host geologic features that form nowhere else on Earth but are strikingly similar to features observed on Mars. For this reason, scientists 6 Astronomical Events have been exploring this terrain for decades to understand the limits of life on Earth and Determine Easter Observance the potential for life elsewhere in the solar system. While it is the most stable landscape in the world, hosting buried ice millions of years old, the Dry Valleys do experience small 7 Rings of the Solar System amounts of surface erosion due to liquid water over long periods of time. Our group has been documenting these processes for many years using high-resolution time-lapse pho- 8 Lenticular Galaxy in Sextans tography and incorporating these data into long-term climate data to understand how NGC 3115 water behaves in polar landscapes generally inhospitable to liquid water. This presentation will show dozens of these time-lapse movies to show how barren landscapes evolve over 10 Secretary & Treasurer time, and discuss what this means for the potential of liquid water on present-day Mars. Jay Dickson is a planetary scientist who has studied the evolution and fate of water ice on Mars and in Antarctica for more than a decade. -
Lists and Charts of Autostar Named Stars
APPENDIX A Lists and Charts of Autostar Named Stars Table A.I provides a list of named stars that are stored in the Autostar database. Following the list, there are constellation charts which show where the stars are located. The names are in alphabetical orderalong with their Latin designation (see Appendix B for complete list ofconstellations). Names in brackets 0 in the table denote a different spelling to one that is known in the list. The star's co-ordinates are set to the same as accuracy as the Autostar co-ordinates i.e. the RA or Dec 'sec' values are omitted. Autostar option: Select Item: Object --+ Star --+ Named 215 216 Appendix A Table A.1. Autostar Named Star List RA Dec Named Star Fig. Ref. latin Designation Hr Min Deg Min Mag Acamar A5 Theta Eridanus 2 58 .2 - 40 18 3.2 Achernar A5 Alpha Eridanus 1 37.6 - 57 14 0.4 Acrux A4 Alpha Crucis 12 26.5 - 63 05 1.3 Adara A2 EpsilonCanis Majoris 6 58.6 - 28 58 1.5 Albireo A4 BetaCygni 19 30.6 ++27 57 3.0 Alcor Al0 80 Ursae Majoris 13 25.2 + 54 59 4.0 Alcyone A9 EtaTauri 3 47.4 + 24 06 2.8 Aldebaran A9 Alpha Tauri 4 35.8 + 16 30 0.8 Alderamin A3 Alpha Cephei 21 18.5 + 62 35 2.4 Algenib A7 Gamma Pegasi 0 13.2 + 15 11 2.8 Algieba (Algeiba) A6 Gamma leonis 10 19.9 + 19 50 2.6 Algol A8 Beta Persei 3 8.1 + 40 57 2.1 Alhena A5 Gamma Geminorum 6 37.6 + 16 23 1.9 Alioth Al0 EpsilonUrsae Majoris 12 54.0 + 55 57 1.7 Alkaid Al0 Eta Ursae Majoris 13 47.5 + 49 18 1.8 Almaak (Almach) Al Gamma Andromedae 2 3.8 + 42 19 2.2 Alnair A6 Alpha Gruis 22 8.2 - 46 57 1.7 Alnath (Elnath) A9 BetaTauri 5 26.2 -
Spectroscopic Atlas for Amateur Astronomers 1
Spectroscopic Atlas for Amateur Astronomers 1 Spectroscopic Atlas for Amateur Astronomers A Guide to the Stellar Spectral Classes Richard Walker Version 3.0 03/2012 Spectroscopic Atlas for Amateur Astronomers 2 Table of Contents 1 Introduction ....................................................................................................................... 7 2 Selection, Preparation and Presentation of the Spectra ........................................... 9 3 Terms, Definitions and Abbreviations........................................................................ 12 4 The Fraunhofer Lines .................................................................................................... 14 5 Overview and Characteristics of Stellar Spectral Classes ..................................... 15 6 Appearance of Elements and Molecules in the Spectra......................................... 20 7 Spectral Class O ............................................................................................................ 21 8 Wolf Rayet Stars ............................................................................................................ 28 9 Spectral Class B............................................................................................................. 32 10 LBV Stars......................................................................................................................... 39 11 Be Stars .......................................................................................................................... -
Conception D'un Modèle De Visibilité D'étoile À L'oeil Nu. Application À L'identification Des Décans Égyptiens
Conception d’un modèle de visibilité d’étoile à l’oeil nu. Application à l’identification des décans égyptiens. Karine Gadré To cite this version: Karine Gadré. Conception d’un modèle de visibilité d’étoile à l’oeil nu. Application à l’identification des décans égyptiens.. Planète et Univers [physics]. Université Paul Sabatier - Toulouse III, 2008. Français. tel-00361227 HAL Id: tel-00361227 https://tel.archives-ouvertes.fr/tel-00361227 Submitted on 13 Feb 2009 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. THÈSETHÈSE En vue de l'obtention du DOCTORAT DE L’UNIVERSITÉ DE TOULOUSE Délivré par l'Université Toulouse III - Paul Sabatier Discipline ou spécialité : Astronomie Présentée et soutenue par Karine GADRE le 21 mai 2008 Titre : Conception d'un modèle de visibilité d'étoile à l'oeil nu. Application à l'identification des décans égyptiens JURY Georges BALMINO, Ingénieur CNES Emérite (Examinateur) Alain BLANCHARD, Professeur UPS (Examinateur) Nicole CAPITAINE, Astronome à l'Observatoire de Paris (Rapporteur) Leo DEPUYDT, Professeur à Brown University -
Report of the Astronomy and Astrophysics, April 26, 2019
April 28, 2019 Dr. France A. Córdova, Director National Science Foundation 2415 Eisenhower Avenue, Suite 19000 Alexandria, VA 22314 Mr. James Bridenstine, Administrator Office of the Administrator NASA Headquarters Washington, DC 20546-0001 Mr. Richard Perry, Secretary of Energy U.S. Department of Energy 1000 Independence Ave., SW Washington, DC 20585 The Honorable Eddie Bernice Johnson, Chairwoman Committee on Science, Space and Technology United States House of Representatives Washington, DC 20515 The Honorable Roger Wicker, Chairman Committee on Commerce, Science and Transportation United States Senate Washington, DC 20510 The Honorable Lamar Alexander, Chairman Committee on Health, Education, Labor & Pensions United States Senate Washington, DC 20510 Headquarters: 65-1120 Mamalahoa Highway, Kamuela, HI 96743 Phone (808) 885-7887 l Fax (808) 885-4464 Dear Dr. Córdova, Mr. Bridenstine, Secretary Perry, Chairwoman Johnson, Chairman Wicker, and Chairman Alexander: I am pleased to transmit to you the annual report of the Astronomy and Astrophysics Advisory Committee for 2018. As you are aware, this year’s report was delayed due to the partial government shutdown early in 2019. The Committee thanks you for your patience, and apologizes for the delay in sending the report. The Astronomy and Astrophysics Advisory Committee was established under the National Science Foundation Authorization Act of 2002 Public Law 107-368 to: (1) assess, and make recommendations regarding, the coordination of astronomy and astrophysics programs of the Foundation -
Binocular Universe: Let's Play Hydra and Seek
Binocular Universe: Let's Play Hydra and Seek April 2013 Phil Harrington f the 88 constellations scattered across the sky, none spans so great a length as Hydra, the Water Serpent. Westernmost Hydra, lying just east of Canis OMinor and winter's Milky Way, consists of a four-star trapezoid marking one of the serpent's seven heads. The serpent’s long, slithering body then winds its way eastward across our southern spring sky to end near Libra, Scorpius, and the gateway to the summer Milky Way. Above: Spring star map from Star Watch by Phil Harrington. Above: Finder chart for this month's Binocular Universe. Chart adapted from Touring the Universe through Binoculars Atlas (TUBA), www.philharrington.net/tuba.htm While its stars are faint, and at times rather hard to follow, the great length of Hydra contains nearly every type of deep-sky object there is. This month, we are going to seek out a few hidden targets that are often missed by observers. We begin our visit at Hydra’s brightest star, Alphard [Alpha (α) Hydrae]. Even though the stars in Hydra are quite faint, Alphard is surprisingly easy to identify. Draw a line from Megrez [Delta (δ) Ursae Majoris] through Phecda [Gamma (γ) Ursae Majoris] in the Bowl of the Big Dipper, and extend it southward to Regulus in Leo. But, keep going until you arrive at another star, a bit fainter than Regulus, but still fairly bright. That's Alphard. Its name translates from the Arabic "the solitary one," which seems appropriate given the barren surroundings.