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An Atlas of Far-Ultraviolet Spectra of the Zeta Aurigae Binary 31 Cygni with Line Identifications
The Astrophysical Journal Supplement Series, 211:27 (14pp), 2014 April doi:10.1088/0067-0049/211/2/27 C 2014. The American Astronomical Society. All rights reserved. Printed in the U.S.A. AN ATLAS OF FAR-ULTRAVIOLET SPECTRA OF THE ZETA AURIGAE BINARY 31 CYGNI WITH LINE IDENTIFICATIONS Wendy Hagen Bauer1 and Philip D. Bennett2,3 1 Whitin Observatory, Wellesley College, 106 Central Street, Wellesley, MA 02481, USA; [email protected] 2 Department of Astronomy & Physics, Saint Mary’s University, Halifax, NS B3H 3C3, Canada 3 Eureka Scientific, Inc., 2452 Delmer Street, Suite 100, Oakland, CA 94602-3017, USA Received 2013 March 29; accepted 2013 October 26; published 2014 April 2 ABSTRACT The ζ Aurigae system 31 Cygni (K4 Ib + B4 V) was observed by the FUSE satellite during total eclipse and at three phases during chromospheric eclipse. We present the coadded, calibrated spectra and atlases with line identifications. During total eclipse, emission from high ionization states (e.g., Fe iii and Cr iii) shows asymmetric profiles redshifted from the systemic velocity, while emission from lower ionization states (e.g., Fe ii and O i) appears more symmetric and is centered closer to the systemic velocity. Absorption from neutral and singly ionized elements is detected during chromospheric eclipse. Late in chromospheric eclipse, absorption from the K star wind is detected at a terminal velocity of ∼80 km s−1. These atlases will be useful for interpreting the far-UV spectra of other ζ Aur systems, as the observed FUSE spectra of 32 Cyg, KQ Pup, and VV Cep during chromospheric eclipse resemble that of 31 Cyg. -
August 13 2016 7:00Pm at the Herrett Center for Arts & Science College of Southern Idaho
Snake River Skies The Newsletter of the Magic Valley Astronomical Society www.mvastro.org Membership Meeting President’s Message Saturday, August 13th 2016 7:00pm at the Herrett Center for Arts & Science College of Southern Idaho. Public Star Party Follows at the Colleagues, Centennial Observatory Club Officers It's that time of year: The City of Rocks Star Party. Set for Friday, Aug. 5th, and Saturday, Aug. 6th, the event is the gem of the MVAS year. As we've done every Robert Mayer, President year, we will hold solar viewing at the Smoky Mountain Campground, followed by a [email protected] potluck there at the campground. Again, MVAS will provide the main course and 208-312-1203 beverages. Paul McClain, Vice President After the potluck, the party moves over to the corral by the bunkhouse over at [email protected] Castle Rocks, with deep sky viewing beginning sometime after 9 p.m. This is a chance to dig into some of the darkest skies in the west. Gary Leavitt, Secretary [email protected] Some members have already reserved campsites, but for those who are thinking of 208-731-7476 dropping by at the last minute, we have room for you at the bunkhouse, and would love to have to come by. Jim Tubbs, Treasurer / ALCOR [email protected] The following Saturday will be the regular MVAS meeting. Please check E-mail or 208-404-2999 Facebook for updates on our guest speaker that day. David Olsen, Newsletter Editor Until then, clear views, [email protected] Robert Mayer Rick Widmer, Webmaster [email protected] Magic Valley Astronomical Society is a member of the Astronomical League M-51 imaged by Rick Widmer & Ken Thomason Herrett Telescope Shotwell Camera https://herrett.csi.edu/astronomy/observatory/City_of_Rocks_Star_Party_2016.asp Calendars for August Sun Mon Tue Wed Thu Fri Sat 1 2 3 4 5 6 New Moon City Rocks City Rocks Lunation 1158 Castle Rocks Castle Rocks Star Party Star Party Almo, ID Almo, ID 7 8 9 10 11 12 13 MVAS General Mtg. -
Abstracts Connecting to the Boston University Network
20th Cambridge Workshop: Cool Stars, Stellar Systems, and the Sun July 29 - Aug 3, 2018 Boston / Cambridge, USA Abstracts Connecting to the Boston University Network 1. Select network ”BU Guest (unencrypted)” 2. Once connected, open a web browser and try to navigate to a website. You should be redirected to https://safeconnect.bu.edu:9443 for registration. If the page does not automatically redirect, go to bu.edu to be brought to the login page. 3. Enter the login information: Guest Username: CoolStars20 Password: CoolStars20 Click to accept the conditions then log in. ii Foreword Our story starts on January 31, 1980 when a small group of about 50 astronomers came to- gether, organized by Andrea Dupree, to discuss the results from the new high-energy satel- lites IUE and Einstein. Called “Cool Stars, Stellar Systems, and the Sun,” the meeting empha- sized the solar stellar connection and focused discussion on “several topics … in which the similarity is manifest: the structures of chromospheres and coronae, stellar activity, and the phenomena of mass loss,” according to the preface of the resulting, “Special Report of the Smithsonian Astrophysical Observatory.” We could easily have chosen the same topics for this meeting. Over the summer of 1980, the group met again in Bonas, France and then back in Cambridge in 1981. Nearly 40 years on, I am comfortable saying these workshops have evolved to be the premier conference series for cool star research. Cool Stars has been held largely biennially, alternating between North America and Europe. Over that time, the field of stellar astro- physics has been upended several times, first by results from Hubble, then ROSAT, then Keck and other large aperture ground-based adaptive optics telescopes. -
Stars and Their Spectra: an Introduction to the Spectral Sequence Second Edition James B
Cambridge University Press 978-0-521-89954-3 - Stars and Their Spectra: An Introduction to the Spectral Sequence Second Edition James B. Kaler Index More information Star index Stars are arranged by the Latin genitive of their constellation of residence, with other star names interspersed alphabetically. Within a constellation, Bayer Greek letters are given first, followed by Roman letters, Flamsteed numbers, variable stars arranged in traditional order (see Section 1.11), and then other names that take on genitive form. Stellar spectra are indicated by an asterisk. The best-known proper names have priority over their Greek-letter names. Spectra of the Sun and of nebulae are included as well. Abell 21 nucleus, see a Aurigae, see Capella Abell 78 nucleus, 327* ε Aurigae, 178, 186 Achernar, 9, 243, 264, 274 z Aurigae, 177, 186 Acrux, see Alpha Crucis Z Aurigae, 186, 269* Adhara, see Epsilon Canis Majoris AB Aurigae, 255 Albireo, 26 Alcor, 26, 177, 241, 243, 272* Barnard’s Star, 129–130, 131 Aldebaran, 9, 27, 80*, 163, 165 Betelgeuse, 2, 9, 16, 18, 20, 73, 74*, 79, Algol, 20, 26, 176–177, 271*, 333, 366 80*, 88, 104–105, 106*, 110*, 113, Altair, 9, 236, 241, 250 115, 118, 122, 187, 216, 264 a Andromedae, 273, 273* image of, 114 b Andromedae, 164 BDþ284211, 285* g Andromedae, 26 Bl 253* u Andromedae A, 218* a Boo¨tis, see Arcturus u Andromedae B, 109* g Boo¨tis, 243 Z Andromedae, 337 Z Boo¨tis, 185 Antares, 10, 73, 104–105, 113, 115, 118, l Boo¨tis, 254, 280, 314 122, 174* s Boo¨tis, 218* 53 Aquarii A, 195 53 Aquarii B, 195 T Camelopardalis, -
Orbital Elements of Double Stars
Orbital elements of double stars: ADS 1548 Marco Scardia, Jean-Louis Prieur, Luigi Pansecchi, Robert Argyle, Josefina Ling, Eric Aristidi, Alessio Zanutta, Lyu Abe, Philippe Bendjoya, Jean-Pierre Rivet, et al. To cite this version: Marco Scardia, Jean-Louis Prieur, Luigi Pansecchi, Robert Argyle, Josefina Ling, et al.. Orbital elements of double stars: ADS 1548. 2018, pp.1. hal-02357208 HAL Id: hal-02357208 https://hal.archives-ouvertes.fr/hal-02357208 Submitted on 23 Nov 2019 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. INTERNATIONAL ASTRONOMICAL UNION COMMISSION G1 (BINARY AND MULTIPLE STAR SYSTEMS) DOUBLE STARS INFORMATION CIRCULAR No. 194 (FEBRUARY 2018) NEW ORBITS ADS Name P T e Ω(2000) 2018 Author(s) α2000δ n a i ! Last ob. 2019 1548 A 819 AB 135y4 2011.06 0.548 153◦8 39◦7 000161 SCARDIA 01570+3101 2◦6587 000424 50◦5 189◦7 2017.833 49.4 0.163 et al. (*) - HDS 333 49.54 1981.14 0.60 252.6 253.8 0.542 TOKOVININ 02332-5156 7.2665 0.413 57.4 150.9 2018.073 255.7 0.519 - COU 691 61.76 1964.53 0.059 68.6 276.2 0.109 DOCOBO 03423+3141 5.8290 0.160 -
Astrometric Measurements of Seven Double Stars, September 2011 Report
Vol. 8 No. 1 January 1, 2012 Journal of Double Star Observations Page 40 Astrometric Measurements of Seven Double Stars, September 2011 Report Joseph M. Carro Cuesta College San Luis Obispo, California Abstract: From my residence in Paso Robles, California, measurements of the separation and position angle of seven double stars were made. Listed in chronological order, the dou- ble stars were Zeta Ursae Majoris, Zeta Lyrae, Epsilon Delphini, SAO 105104 in Sagitta, STF 2840 in Cepheus, 61 Cygni, and 17 Cygni. The two goals of this project were to meas- ure the position angle and separation of the aforementioned double stars, and to learn the necessary techniques to conduct this research. Methodology My observations were made from my home in Paso Robles, California (located at approximately 35o37’36” N and 120o41’24” W) using a Celestron model CPC 1100 telescope (Figure 1). The telescope is computerized, motorized, and was fitted with a Celestron Micro Guide 12.5 mm astrometric eye- piece. The telescope is of Schmidt-Cassegrain de- sign, with aperture of 11 inches on an alt-azimuth mount. The manufacturer reports a focal length of 2,800 mm. The Micro Guide eyepiece was oriented with the celestial coordinate system using the primary star of the double star under study. The primary star was positioned on the mark 30, the drive was disabled, and the star was permitted to drift to the outer cir- cle. The scale was rotated until the star lay on the 270 degree mark. The accuracy of this setting was verified by positioning the primary star on the 90 degree mark of the outer circular scale, and allowing the star to drift to the 270 degree mark. -
Astronomical Coordinate Systems
Appendix 1 Astronomical Coordinate Systems A basic requirement for studying the heavens is being able to determine where in the sky things are located. To specify sky positions, astronomers have developed several coordinate systems. Each sys- tem uses a coordinate grid projected on the celestial sphere, which is similar to the geographic coor- dinate system used on the surface of the Earth. The coordinate systems differ only in their choice of the fundamental plane, which divides the sky into two equal hemispheres along a great circle (the fundamental plane of the geographic system is the Earth’s equator). Each coordinate system is named for its choice of fundamental plane. The Equatorial Coordinate System The equatorial coordinate system is probably the most widely used celestial coordinate system. It is also the most closely related to the geographic coordinate system because they use the same funda- mental plane and poles. The projection of the Earth’s equator onto the celestial sphere is called the celestial equator. Similarly, projecting the geographic poles onto the celestial sphere defines the north and south celestial poles. However, there is an important difference between the equatorial and geographic coordinate sys- tems: the geographic system is fixed to the Earth and rotates as the Earth does. The Equatorial system is fixed to the stars, so it appears to rotate across the sky with the stars, but it’s really the Earth rotating under the fixed sky. The latitudinal (latitude-like) angle of the equatorial system is called declination (Dec. for short). It measures the angle of an object above or below the celestial equator. -
A L B I R E O 1999
XIX. évfolyam, 2. szám 1999. június ALBIREO Alapította: Szentmártoni Béla Szerkeszti: Juhász Tibor ALBIREO MAGYAR ÉGHAJLATVÁLTOZÁST AMATÕRCSILLAGÁSZ KLUB MEGFIGYELÕ HÁLÓZAT Zalaegerszeg, Nemzetõr u. 8. Vác, Pf. 184. H-8900 (Hungary) H-2234 (Hungary) e-mail: [email protected] e-mail: [email protected] http://alpha.dfmk.hu/~albireo CÍMLAPUNKON: Csillagtúra a Cygnus-ban - a cikk illusztrációja TARTALOM CONTENTS Nap (Zelkó Z.) 2 Sun Observations 2 Bótz Zs.: Hogyan deríthetjük fel a How Can We Found the Sources savas esõ forrásait? 6 of the Acid Rain? 6 A szennyezõ anyagok sorsa Accumulation of the Pollutants a táplálékláncban 8 in the Food-Chain 8 C.A. Wood: A Plato titkai 11 The Mysteries of Plato 11 Üstökösök 12 Comet Observations 12 P. Harrington: Kedvenc aszterizmusaim 13 My Favorite Asterisms 13 Juhász T.: Baseball-pálya a Cygnus-ban 16 The Cygnus Baseball Diamond 16 A. MacRobert: Csillagtúra a Cygnus-ban 18 A Cygnus Star-Hop 18 Kettõscsillagok 20 Double Star Observations 20 Észlelõ amatõrcsillagászok és amatõrmete- Albireo is the circulaire of the Hungarian Albi- orológusok körlevele. Az amatõrök megfigye- reo Amateur Astronomy Society and the Hun- léseikért cserébe kapják. Más érdeklõdõk a garian Climate Changes Observations Network. szerkesztõ címén rendelhetik meg. Megfigyelési Subscription fee 10 USD or 20 DM for a year. tájékoztatók, csillagatlaszok, katalógusok is a Despite money order or cash exchange maga- szerkesztõtõl kérhetõk. zines or other publications are prefered. Kiadja: a Göncöl Alapítvány (Vác) és a Zrínyi Miklós Gimnázium (Zalaegerszeg) Felelõs kiadó: Kiszel Vilmos A kiadványt Zalaegerszeg Megyei Jogú Város Önkormányzatának Közgyûlése támogatja. NAP Összeállította: Zelkó Zoltán 1998 elsõ félévében már igazán nem panasz- a foltok, jelezvén az aktivitás vizsgált idõszakon kodhattak észlelõink, bõven akadt látnivaló a is túlmutató, gyors erõsödését. -
Meteor 23. Évf. 6. Sz. (1993.)
ROVATVEZETŐINK: ■ NAP Iskum József meteor Budapest, Rózsa u. 48. 1041 ■ HOLD A Magyar Csillagászati Egyesület Kocsis Antal lapja Balatonkenese, Kossuth u. 2/a. 8174 Journal of the Hungarian Astronomical Association ■ BOLYGÓK Vincze Iván Redaction: Pécs, Aidinger J. u. 15. 7632 H-1461 Budapest, P.0. Box 219, Hungary ■ ÜSTÖKÖSÖK HU ISSN 0133-249X Sárneczky Krisztián Budapest, Kádár u. 9-11. 1132 Tel.: (1)-153-4902 A Meteor előfizetési díja 1993-ra ■ METEOROK (nem tagok számára) 800 Ft + ÁFA Tepliczky István Tata, Baji út 42. 2890 Évközben i előfizetés (tagdíjbefizetés) ■ CSILLAGFEDÉSEK esetén a számokat visszamenőleg Szabó Sándor megküldjük. Sopron, Baross u. 12. 9400 ■ KETTŐSCSILLAGOK Főszerkesztő: Ladányi Tamás Mizser Attila Balatonfűzfő, Balaton krt. 71. 8175 Tel.: (80J-51-744 Olvasószerkesztők: ■ VÁLTOZÓCSILLAGOK Csaba György Gábor Mizser Attila Dr. Kolláth Zoltán Budapest, Pf. 219. 1461 Tepliczky István Tel.: (1 )-186-2313 ■ MÉLY-ÉG OBJEKTUMOK A Magyar Csillagászati Egyesület és a Papp Sándor szerkesztőség postacíme: Kecskemét, Csokonai u. 1. 6000 Budapest, Pf. 219. 1461 ■ MESSIER KLUB Nagy Zoltán Antal Felelős kiadó az MCSE elnöke. Budapest, Corvin krt. 49. 1192 Megjelenik ■ SZABADSZEMES JELENSÉGEK a Pro Renovadna Cultura Hungáriáé Keresztúri Ákos Alapítvány támogatásával Budapest, Komjády B. u. 1. 1023 Tel.: (1)-115-6772 ■ CSILLAGÁSZATTÖRTÉNET Keszthelyi Sándor MAGYAR Pécs, Alkotmány u. 3. 7624 CSILLAGÁSZATI ■ TÁVCSŐKÉSZÍTÉS EGYESÜLET Dán András Az egyesületi tagság formái (1993): Etyek, Alsóhegy u. 7. 2091 — rendes tagsági díj (illetmény: ■ SZÁMÍTÁSTECHNIKA Meteor csili, évkönyv) 600 Ft Heitler Gábor Piliscsaba, Egyetem út 5. 2081 — pártoló tagsági díj (ill.: Meteor + Meteor csili, évkönyv) 1200 Ft A BESZÁMOLÓK BEKÜLDÉSE — örökös pártoló tagdíj 30000 Ft MINDEN HÓ 6-áig! Tartalom Contents XXIII. -
1– Observational Astronomy / PHYS-UA 13 / Fall 2013
{ 1 { Observational Astronomy / PHYS-UA 13 / Fall 2013/ Syllabus This course will teach you how to observe the sky with your naked eye, binoculars, and small telescopes. You will learn to recognize astronomical objects in the night sky, orient yourself using the basics of astronomical coordinates, learn the basics of observable lunar and planetary properties. You will be able to understand and predict, using charts and graphs, the changes we see in the night sky. You will learn to understand basic astronomical phenomena that can be observed with basic instrumentation. In addition, this course wishes to provide you with an insight into the scientific method. The instructors is: Dr. Federica Bianco (Meyer 523, [email protected]). Office hours are Tue 930AM (or by appointment). The TA is Nityasri Doddamane ([email protected]) Books The primary textbook is • The Ever-Changing Sky, James Kaler. In addition, we will use the • Edmund Mag 5 Star Atlas • Peterson Field Guide to the Stars and Planets, Jay Pasachoff • the laboratory manual. Each week you will attend one lecture (at 2pm Monday in Meyer 102) and one lab (at 7pm on either Monday or Wednesday in Meyer 224. You cannot switch between the lab sections, because in general they will be on different schedules). Arrive for the lab (on time!) at 7:00pm. The content of the lab will be discussed at the beginning of the lab session. When appropriate, and weather permitting, we will go to the observatory. For the labs: you MUST arrive on time, or else you will not be able to access the observatory. -
ULTRAVIOLET OBSERVATIONS of 31 and 32 CYGNI Robert E. Stencel and Yoji Kondo NASA
ULTRAVIOLET OBSERVATIONS OF 31 and 32 CYGNI Robert E. Stencel and Yoji Kondo NASA - Goddard Space Flight Center; Andrew P. Bernat Kitt Peak National Observatory, and George MoCluskey Lehigh University Ultraviolet observations of the Zeta Aurigae systems appear to have several advantages over comparable visual wavelength studies. A wide range of large optical depth resonance lines of abundant species permit the study of the supergiant atmosphere and circumstellar environ ment at virtually all phases. The International Ultraviolet Explorer satellite (Boggess, et al., 1978) is well suited to obtaining spectra between 1150 and 3200 A, although the competition for observing time is non-negligible. Our initial observations of 31 and 32 Cygni were made in Sept. 1978, as part of the observing program of Kondo and McCluskey on interacting binary stars. 31 Cygni was observed at phase 0.62, and 32 Cygni at phase 0.17. Detailed reports on these observations are forthccDming (Stencel, et al., 1979; Bernat et al., 1979), but seme of the highlights of the observations are presented here. A. 32 CYGNI Qualitatively, the UV spectrum of 32 Cyg is best described as a superposition of P Cygni features among strong lines on a bright B star continuum. Numerous lines of Si II, O I, C II, Al II and III and Fe II appear with P Cygni characteristics. Higher excitation lines, Si III 1298A and Si IV 1402A, are also present in the SWP2491 image. The UNJR- 2275 image is dominated by the Mg II 2800A resonance doublet and numerous Fe II lines in the 2200 - 2700 A region, all showing P Cygni profiles. -
BAV Rundbrief Nr. 1 (2014)
BAV Rundbrief 2014 | Nr. 1 | 63. Jahrgang | ISSN 0405-5497 Bundesdeutsche Arbeitsgemeinschaft für Veränderliche Sterne e.V. (BAV) BAV Rundbrief 2014 | Nr. 1 | 63. Jahrgang | ISSN 0405-5497 Table of Contents K. Häußler Lightcurves and periods of 5 eclipsing binaries in Aquilae 1 G. Maintz V833 Cygni and BO Tauri - RRab stars with very weak Blazhko effect 8 R. Gröbel Light curve and period of the RR Lyrae star TV Trianguli and GSC 02297-00060, a new variable In the field 12 S. Hümmerich / Two new Delta Cephei variables and a W Virginis star discovered 18 K. Bernhard Inhaltsverzeichnis K. Häußler Lichtkurven und Perioden von 5 Bedeckungssternen in Aquilae 1 G. Maintz V833 Cygni und BO Tauri - RRab-Sterne mit sehr kleinem Blazhko-Effekt 8 R. Gröbel Lichtkurve und Periode des RR-Lyrae-Sterns TV Trinaguli und GSC 02297-00060, ein neuer Veränderlicher im Feld 12 S. Hümmerich / GSC 00689-00724, OGLEII CAR-SC3 28804 und OGLEII CAR-SC3 K. Bernhard 126137 - zwei neue Delta-Cepheiden und ein W-Virginis-Stern 18 Beobachtungsberichte D. Böhme LX Peg und V477 And - zwei wenig bekannte W-UMa-Sterne 23 J. Hübscher SEPA und die neue BAV-Mitgliedsnummer 25 F. Walter Ergebnisse der Beobachtungskampagne 31 Cygni 26 C. Moos Delta-Scuti-Sterne in Sky Surveys 28 E. Pollmann Report zur BAV-AAVSO-ASPA-Langzeitstudie an P Cygni 34 K. Bernhard / Die Helligkeitsentwicklung von einigen aktiven Galaxien im S. Hümmerich Catalina Sky Survey 37 K. Wenzel Zwei helle Supernovae 2013 - SN 2013dy und SN 213ej 41 S. Hümmerich / Flares auf dem roten Zwergstern J145110.2+310639.7 (G 166-49) 43 K.