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Topic: Epsilon Aurigae


  
 Auriga (constellation) - Encyclopedia.WorldSearch   (Site not responding. Last check: 2007-10-16)
Auriga (Latin for chariot) is a northern constellation.
ε Aurigae is one of the strangest binary stars.
ζ Aurigae has a period of 970 days, the primary is a (K-class)supergiant and the secondary is a (B-class) main sequence star.
encyclopedia.worldsearch.com /auriga_(constellation).htm   (365 words)

  
 Far News: Does The Star Epsilon Have A Orbiting Dark Companion?
Epsilon is a variable star, which means that its brightness varies according to a predictable pattern.
Epsilon must have a mysterious, unseen companion, a star that orbits the main star and every 27 years passes in front of it along our line of sight.
Because of the behavior of Epsilon, astronomers assume the disk is there, but no one has yet observed it directly.
www.100megsfree4.com /farshores/nepsilon.htm   (552 words)

  
 Science Line - Night Patrol - Constellations - Auriga - Epsilon Aurigae   (Site not responding. Last check: 2007-10-16)
Epsilon Aurigae is a supergiant star whose brightness is known to fluctuate between 3.0 and 3.8 over a period of approximately 27 years.
Epsilon Aurigae appears fainter when its dimmer companion star partially eclipses it - in much the same way the Moon can cut out light from our Sun during a partial solar eclipse.
However, Epsilon Aurigae has been measured at a distance of some 2,000 light-years from the Earth and astronomers conclude that the faint companion star would also have to be massive to be able to make a difference to Epsilon Aurigae's light, itself a supergiant star many hundreds of times larger that the Sun.
www.sciencenet.org.uk /astron/const/Auriga/epsilonaurigae.html   (272 words)

  
 Auriga
Auriga is an ancient Northern Hemisphere constellation featuring one of the brightest stars in the heavens: Capella.
Auriga is usually pictured as a charioteer; the youth Auriga wields a whip in one hand and holds a goat (Capella) and her two kids in the other.
Epsilon Aurigae is an unusual variable which normally maintains a visual magnitude of 2.92 but every 9892 days (27 years) dips down to 3.83.
www.dibonsmith.com /aur_con.htm   (673 words)

  
 Auriga   (Site not responding. Last check: 2007-10-16)
Placed to the north of Gemini and Taurus, and situated between Lynx and Perseus, the constellation of Auriga contains the sixth star in order of brightness of the whole vault of heaven: it is Capella, a yellow giant, with a bright issue equal to sixty times that of the Sun.
Other interesting stars are two eclipse binaries, both situated near the border with the constellation of Perseus: epsilon Aurigae, that has a 27-year period (the longest among the known eclipse binaries), and zeta Aurigae, which every 2 years and 6 months pass during six weeks from the magnitude 3,7 to the magnitude 4,0.
Auriga, then, has a trio of open cluster: M36 (reproduced here on the left), that counts about sixty stars; M37, composed from around 150 stars; and M38, the least compact one, with hundred weak stars.
www.astrofilitrentini.it /mat/costell/aur_e.html   (423 words)

  
 epsilon - Definition of epsilon by Webster's Online Dictionary   (Site not responding. Last check: 2007-10-16)
EPSILON - A macro language with high level features including strings and lists, developed by A.
EPSILON was used to implement ALGOL 68 on the M-220.
The use of epsilon is from the epsilon-delta method of proof in differential calculus.
www.webster-dictionary.org /definition/epsilon   (123 words)

  
 Epsilon Aurigae
One of the strangest and least understood stars in the sky: a binary system, located in the constellation Auriga, in which an enormous yellow-white supergiant is periodically eclipsed by an object that is vastly larger.
Its occasionally-used Arabic name, Almaaz, means “the he-goat.” The bright component of Epsilon Aurigae is a hot-end supergiant F star, slightly more than 1 AU in diameter.
The supergiant we see and the mystery star are perhaps 30 AU apart, the dust ring about the secondary star is some 20 AU in diameter.
www.daviddarling.info /encyclopedia/E/Epsilon_Aurigae.html   (313 words)

  
 Cocheiro   (Site not responding. Last check: 2007-10-16)
Epsilon Aurigae é uma variável invulgar que normalmente mantém a sua magnitude visual de 2.92 mas em cada 9892 dias (27 anos) desce até 3.83.
R Aurigae é a única variável tipo Mira de interesse.
O jovem Cocheiro (ou Auriga) segura um chicote numa mão e segura uma cabra (Capella) e as suas crias na outra mão.
www.ga-esec-pinheiro-rosa.rcts.pt /constelacoes_antiga/cocheiro.htm   (588 words)

  
 Auriga (abbr. Aur, gen. Aurigae)
Epsilon Aurigae and Zeta Aurigae are remarkable eclipsing binaries.
Together with Eta Aur, they make up the so-called Kids, an asterism which lies just to the south and slightly ahead of Capella (whose name means the "She-Goat").
The most northerly of the trio, Epsilon, is a late addition; in antiquity Zeta and Eta were known respectively as "the western kid" and "the eastern kid."
www.daviddarling.info /encyclopedia/A/Aur.html   (294 words)

  
 Costellazioni: Auriga
La costellazione viene immaginata come un auriga con in braccio una capra (Capella) e due capretti (stelle Headi, zeta ed eta Aurigae).
Epsilon Aurigae è una binaria ad eclisse con periodo di 27 anni, il più lungo finora conosciuto per questo tipo di binarie; la stella visibile orbita attorno ad una compagna il cui raggio risulta essere 2000 volte quello del Sole, ovvero quasi un miliardo e mezzo di Km., la più grande stella che si conosca.
Tra le diverse interpretazioni del mito di Auriga anche quella che l’identifica con Mirtilo, figlio dell'amazzone Mirte e del dio Ermes (per i romani Mercurio, il dio messaggero dell'Olimpo) e cocchiere del re Enomao.
www.margheritacampaniolo.it /la_costellazione_auriga.htm   (1518 words)

  
 Capella Information   (Site not responding. Last check: 2007-10-16)
Capella is known as the She-Goat and is accompanied by her "Kids", the three stars that form a triangle close by.
Of those, Epsilon Aurigae gives an illustration of how hugely distances vary in the galaxy.
Epsilon is around 4500 light years away and still presents a magnitude of 3.0 - if it were as close as Capella it would cast shadows on the surface of the Earth!
www.frontierastro.co.uk /StarData/Capella.html   (97 words)

  
 Epsilon Aurigae, Campaign 2009
Epsilon Aurigae, a bright third-magnitude star in the northern sky, has puzzled astronomers for most of the last century.
We use a variety of multi-wavelength observations to constrain the parameters of the newly unveiled B-star in \epsilon~ Aur.
Intereclipse Spectroscopic Snapshot of epsilon Aurigae with the Hubble Space Telescope, Sheffer and Lambert, 1999 PASP 111:829.
www.du.edu /~rstencel/epsaur.htm   (1265 words)

  
 AllRefer.com - Auriga, Constellation (Constellations) - Encyclopedia   (Site not responding. Last check: 2007-10-16)
You are here : AllRefer.com > Reference > Encyclopedia > Constellations > Auriga
Auriga contains Capella, a bright, yellow giant star, and Epsilon Aurigae, an eclipsing binary in which a small star orbits a cool supergiant star.
The constellation reaches its highest point in the evening sky in early February.
reference.allrefer.com /encyclopedia/A/Auriga.html   (175 words)

  
 Sky Shows of Vermont -- PLANETARIUM PROGRAMS   (Site not responding. Last check: 2007-10-16)
That brilliant star in the east is Capella, sixth brightest star in the sky, located in the constellation of Auriga, the charioteer.
The "kid" closest to Capella has no proper name at all but is known simply as "epsilon Aurigae" -- the fifth brightest star in the constellation of Auriga.
The kid in Auriga is not like that at all.
www.sover.net /~skyshows/invisible.html   (282 words)

  
 Maaz
The star Maaz (Scientific Name Epsilon Aurigae) is located at right ascension 5h 1.968m and declination 43° 49.400'.
Maaz is a relatively bright star with a magnitude of 2.99.
The spectral class of this star is F0Iae+B. It has an Hd number of 31964, an FK5 number of 183, and a SAO number of 39955.
www.absoluteastronomy.com /stars/maaz.htm   (55 words)

  
 Observing the Sky   (Site not responding. Last check: 2007-10-16)
At that time, there is a tight small triangle of stars to the lower right of Capella, and the topmost star - Epsilon Aurigae is at least more interesting.
In addition to the bright stars, Auriga has 3 Messier objects: M-36, M-37, and M-38, all open clusters of stars between 4,000 and 4,400 light years from here.
It is also the oldest, being close to 400 million yrs old, forming when plants were just beginning to colonize the land masses on this planet.
www.observingthesky.org /index.php?m=20040905   (529 words)

  
 Bad Astronomy and Universe Today Forum - Weird Neighbors   (Site not responding. Last check: 2007-10-16)
The programs proposed and accepted for observations are therefore driven by scientists' interests, and the scientific merits of the proposals.
Spitzer will be no use for observing Epsilon Aurigae in August 2009, it will have run out of coolant before then.
The true nature of Epsilon Aurigae has been speculated about for quite some time.
www.universetoday.com /forum/index.php?showtopic=6410&view=getlastpost   (577 words)

  
 Mark Wagner; Backyard observing: The Joys of Winter
Still in Auriga we tracked down NGC 1857, a mag 7 open in the heart of the constellation.
Sitting directly between Iota and Theta Aurigae, you will find M38, a beautiful large and rich open cluster with many stars of similar magnitudes.
I noted IC 2149 just off Beta Aurigae and with the 12mm Nagler was able to see a small, bright disk.
www.observers.org /reports/2000.12.17.html   (1694 words)

  
 Imago Mundi - Le Cocher.
Thêta Aurigae est une étoile de magnitude apparente 2,65.
Également connue pour ses variations, Epsilon Aurigae = Al Anz, est en fait une double à éclipses du type d'Algol de Persée située à 2000 années-lumière.
L'étoile variable AE Aurigae est située au coeur de la nébuleuse IC 405, Aussi appelée la Nébuleuse de l'Étoile flamboyante...
www.cosmovisions.com /aur.htm   (422 words)

  
 CAOSP articles, Volume: 16, year: 1987   (Site not responding. Last check: 2007-10-16)
Author(s): Bakos, G. A.; Tremko, J. Title: Spectroscopic orbital elements and photometry of the multiple system epsilon Hydrae.
Author(s): Kulcar, L. Title: Large-scale changes in the intensity of the green corona and their reflection in the solar wind particle flux.
Author(s): Chochol, D.; Ziznovsky, J. Title: Photoelectric photometry of the eclipse of epsilon Aurigae.
www.ta3.sk /caosp/Eedition/Abstracts/1987/Vol_16/index.html   (153 words)

  
 Remote Sensing Tutorial Page A-5
Another even bigger star (2800 times the solar diameter; 2.4 billion miles) is Epsilon Aurigae (in the constellation Auriga, the Charioteer), but residing in the Milky Way about 3300 light years from Earth.
This star, also known as Al Maaz (Arabic for he-goat) and visible to the naked eye) is considered by many astronomers to be the "strangest" star in the firmament.
Most stars bigger than the Sun are not as huge as Mu Cephi or Epsilon Aurigae.
rst.gsfc.nasa.gov /Sect20/A5.html   (7458 words)

  
 Wie kommt es, dass man sich bei Epsilon Aurigae nicht sicher ist, ob es ein Stern oder eine Gas- und Staubwolke ist?
Wie kommt es, dass man sich bei Epsilon Aurigae nicht sicher ist, ob es ein Stern oder eine Gas- und Staubwolke ist?
Bei Epsilon Auriga selbst weiß man um was es sich handelt: um einen Stern, der etwa den hundertfachen Durchmesser der Sonne hat.
Aber die Helligkeit von Epsilon Aurigae schwankt und als Ursache dafür wird ein Begleitstern angenommen.
www.astronews.com /frag/antworten/frage199.html   (198 words)

  
 La Via Lattea nell'Auriga
Ha una lunghezza di 145 minuti d'arco; si trova tra la stella Epsilon Persei (45 Persei - SAO 56840 di magnitudine 3.0 e tipo spettrale B1) e Menkib, la Xi Persei (46 Persei - SAO 56856, di magnitudine 4.0 e tipo spettrale Oe).
Per una migliore identificazione della zona, diremo che la stella gialla più luminosa, visibile proprio sul bordo superiore della diapositiva digitalizzata, è Capella, Alpha Aurigae, di magnitudine 0.1 (è la quinta stella più luminosa del nostro cielo), mentre la più luminosa sull'angolo alto sinistro è Beta Aurigae, Menkalinan, di magnitudine 2.1.
I Capretti vengono identificati con le stelle Epsilon Aurigae (variabile di tipo EA/GS, con massima magnitude=2.92 e minima magnitudina=3.83, periodo=9892 e tipo spettrale: A8Ia-F2epIa+BV), Eta Aurigae (10 Aurigae - SAO 40026, di magnitudine SAO=3.3 e classe spettrale: B3) e Zeta Aurigae (8 Aurigae - SAO 39966, di magnitudine SAO=3.9).
www.castfvg.it /nebulose/varie/vl_06.htm   (601 words)

  
 The First Known Variable Stars
As Hoffmeister states, of the 18 variables "known" in 1844, a list which had been published by F.W. Argelander, two (Alpha Cassiopeiae and Alpha Hydrae) are actually not variable, while Argelander had missed R Cancri (also).
The most reliable reference, however, is probably Isles, who has researched at least two variables (i Bootis B and Epsilon Aurigae) which had been neglected by the other references.
Here is an attempt to list the earliest known variables (based on Isles, Hoffmeister and Strohmeier; note that Roth's numbers can apparently not be verified from this list); we hope to be rather complete for the time before 1844.
www.seds.org /%7espider/spider/Vars/vars.html   (642 words)

  
 7. Museumsstück
„Sobald ihr Warpantriebssystem wieder einsatzbereit ist, fliegen Sie sofort zum Epsilon Aurigae-System.
„Wir treffen in zweiundzwanzig Stunden bei Epsilon Aurigae ein.
Und hier noch eine wichtige Suchmeldung: Aus der Strafkolonie auf Beta Aurigae ist vor wenigen Tagen ein Insasse ausgebrochen.
www.andreas-drechsler.de /trek/stories/museumsstueck.htm   (14283 words)

  
 Steno Ferluga
In seguito, frequentando la prestigiosissima S.I.S.S.A. (Scuola Internazionale di Studi Superiori Avanzati) ha ottenuto il Dottorato internazionale PhD in astrofisica con un lavoro originale di ricerca sulla stella Epsilon Aurigae.
E' stato subito assunto, nel 1983, al Dipartimento di Astronomia dell’Università di Trieste con la qualifica di ricercatore.
I settori in cui ha svolto le proprie ricerche riguardano prevalentemente lo studio delle stelle doppie e peculiari (come Epsilon Aurigae citata precedentemente), il problema cosmologico dell’abbondanza dell’elio primordiale e l’abbondanza degli elementi atomici in generale.
www.cicap.org /enciclop/at100302.htm   (273 words)

  
 The Beggar's Tooth
After the rendezvous, the ship was to proceed to Epsilon Aurigae Four, the planet of the Amerinds that the Enterprise had encountered some years earlier.
They were to conduct a standard population survey, observe the natives, and a perform a few experiments on the Preserver relic, the obelisk, which served as a meteor-asteroid deflector.
They had successfully liberated the inhabitants of Epsilon Aurigae IV from the clutches of their Kzinti enslavers.
www.fastcopyinc.com /orionpress/2275-2283_The_Second_Hiatus/thebeggarstooth.htm   (11676 words)

  
 HPO Publications
Epsilon Aurigae: Pulsations and the Post-Eclipse (1984-1987) Polarization and Light Curves
Out-of Eclipse UBV Variations of epsilon Aurigae [F0Iap] (Poster Paper AAS meeting January 2005)
THE 1982-1984 ECLIPSE OF EPSILON AURIGAE, Chapter 6,
www.hposoft.com /Astro/Publications.html   (369 words)

  
 profile.html   (Site not responding. Last check: 2007-10-16)
It might not be as small as a hot air balloon.
Astoundingly in the last figure, Beta Pegasi was illustrated as tiny as a grain, and Epsilon Aurigae was as huge as tennis ball.
Then, I was filled with a sense of wonder of space.
www2.gol.com /users/junoi/profile/index.html   (531 words)

  
 Stars
September 2, 2005: Eps CrA (Epsilon Coronae Australis, featuring the light and velocity curves);
This week's update is: Deneb (Alpha Cygni), featuring a close up look.
Last week's updates were: Epsilon and Delta-2 Lyrae, both featuring close-up images, and Altair, featuring its light curve.
www.astro.uiuc.edu /~kaler/sow/sowlist.html   (954 words)

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