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Topic: Sirius B

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	Sirius
		Sirius B has a Visual Magnitude of 8.49, corresponding to a luminosity 1/400 times that of the sun.
		Sirius B reveals with a 50 year period in an orbit with a separation of about 20 AU between the two stars.
		Sirius B must be a star having almost the mass of the sun packed into a volume smaller than that of the earth.
	domeofthesky.com /clicks/sirius.html (396 words)

	Sirius, mystery of red color
		This, however, is not the end of the Sirius mystery because the Dogon include in their traditions the belief that Sirius once appeared red, as indeed it would have done when it passed through its red giant phase in the remote past (see stars, evolution).
		The trouble is, according to current theories of stellar evolution, there is no way that Sirius B could have evolved from a red giant to its present white dwarf stage in a matter of a few thousand years.
		In ancient Babylonian, Greek, and Roman literature, the appearance of Sirius is likened to that of Mars and the orange-red star Arcturus.
	www.daviddarling.info /encyclopedia/S/Siriusred.html (1046 words)

	eSky: Sirius
		This is a binary star: the primary star, Sirius A, is orbited by a white dwarf known as Sirius B. The sky's brightest star, Sirius, as seen on a winter evening in the northern hemisphere.
		Sirius is a luminous star in comparison to the Sun, and rather more massive (its mass is about double that of the Sun).
		Sirius B is a white dwarf - the remnant of a once-giant star packed into a body smaller than the Earth.
	www.glyphweb.com /esky/stars/sirius.html (483 words)

	Sirius 2
		Sirius is composed of a main-sequence star and a white dwarf stellar remnant.
		However, Sirius B was not actually observed until January 31, 1862 by Alvan Graham Clark (1832-1897), who was testing a new 18-inch telescope built for Dearborn Observatory by the famous company founded by his father (Alvan Clark) and later run by his brother and himself.
		Sirius B was the first White Dwarf to be discovered, but it took almost a century from its discovery to the wide acceptance of its nature as a stellar remnant.
	www.solstation.com /stars/sirius2.htm (1633 words)

	Sirius - Crystalinks
		Sirius is the brightest star in the nighttime sky, with a visual apparent magnitude of -1.46. It is located in the constellation Canis Major. Its name comes from the Latin sirius, from Greek(seirios, "glowing"). It is situated in the eye of the greater dog Canis Major, therefore it is known as the 'Dog Star'.
		Sirius B although small and faint and about 10,000 times dimmer than Sirius A is extremely dense and heavy enough to exert influence on Sirius A. The pull of its gravity caused Sirius' wavy movement.
		Sirius B is invisible to the naked eye but packs almost the entire mass of our sun into a globe only 4 times as large as the Earth.
	www.crystalinks.com /sirius.html (2251 words)

	Sirius - Wikipedia, the free encyclopedia
		Sirius was worshipped as Sothis in the valley of the Nile long before Rome was founded.
		In the astrology of the Middle Ages, Sirius was a Behenian fixed star, associated with beryl and juniper.
		In 2005, using the Hubble Space Telescope, astronomers determined that Sirius B has nearly the diameter of the Earth, 12,000 kilometers (7,500 miles), with a mass that is 98% of the Sun.
	en.wikipedia.org /wiki/Sirius (1511 words)

	A New Determination of the Relative Orbit of the Massive White Dwarf Sirius B (Site not responding. Last check: 2007-10-21)
		The report of a new determination of the orbit of the massive white dwarf Sirius B is being presented by Dr. Jay B. Holberg of the Lunar and Planetary Laboratory, of the University of Arizona in Tucson, Arizona to the American Astronomical Society meeting in Nashville, Tennessee.
		Sirius B is one of just a few white dwarfs whose masses are known accurately enough to be used to test a fundamental theory of the interiors of white dwarf stars.
		Sirius B is the nearest known white dwarf, at a distance of only 8.6 light years from the sun, yet because of the closeness at which it orbits the brightest star in the sky, it is one of the most difficult white dwarfs to observe.
	vega.lpl.arizona.edu /AAS_2003 (644 words)

	Sirius
		In 1862, Sirius was discovered to be a binary star system with a (twin) companion star, Sirius B, 10,000 times dimmer than the bright primary, Sirius A. Sirius B was the first white dwarf star discovered, a type of star first understood by Subrahmanyan Chandrasekhar in 1930.
		Sirius [Gr.,=scorching], having an apparent magnitude of -1.45, is exceeded in brightness only by the sun, the moon, and Venus and by Mars and Jupiter at their maximum brightness.
		At the center of their religious teachings is the knowledge of a Sirius B, a white dwarf, although small and faint is extremely dense and heavy enough to exert an influence on Sirius A. The Dogon name for Sirius B is Po Tolo.
	www.siriuslink.com /brightest.php (1991 words)

	[No title]
		This is a possibility considering Sirius B's existence was suspected as early as 1844 and seen was through a telescope in 1862.
		In the 1920's it was determined that Sirius B, the companion of Sirius, was a "white dwarf" star.
		Sirius B is, in fact, smaller than the planet Earth.
	unmuseum.mus.pa.us /siriusb.htm (811 words)

	Sirius (Alpha Canis Majoris)
		The companion (Sirius B, or "the Pup"), orbits with a period of 49.97 years, and was the first white dwarf to be discovered.
		Following Bessel's suggestion (1844) that Sirius had a dark companion to account for the star's wobbling movement, this object was optically identified by Alvan G. Clark in 1862.
		With a diameter of 12,000 km, Sirius B is roughly the same size as the Earth but has about the same mass as the Sun.
	www.daviddarling.info /encyclopedia/S/Sirius.html (279 words)

	* A Sirius Mystery *
		Sirius was a part of Egyptian culture, as it is in the Dogon culture.
		The star Sirius A and its dark companion, the white dwarf star Sirius B are at the core of the mystery regarding the said extraterrestrial visitation.
		Sirius B is a white dwarf star, which means it is very small, white, and not very bright; Sirius B is 100,000 times less bright than Sirius A. White dwarf stars are extremely dense because they are near the end of their life and have collapsed in on themselves and become super dense.
	www.angelfire.com /ky/darkstarsmoon/sirius.html (1769 words)

	The Star Sirius
		Sirius B is a "white dwarf" star, invisible to the naked eye and packing the equivalent mass of our sun into an incredibly dense globe only 4 times the diameter of our Earth.
		Sirius B traces an elliptical orbit around Sirius A, and their common center of gravity, directly face onto the Earth like the dial of a clock.
		As Sirius B moves past periastron, the light generated by their shared energies begins to diminish until eventually, it resumes its role as her "Dark Companion".
	www.siriusrising.com /sirius.htm (619 words)

	OUR SPIRITUAL SUN SIRIUS
		Sirius B, a white dwarf star invisible to the naked eye, packs almost the entire mass of our sun into a globe only four times as large as the Earth.
		Sirius, considered by the ancient Egyptians to be the most important star in the sky, was astronomically the foundation of their entire religious system.
		Sirius is also associated with liberation; in fact, according to ancient teachings, the very concept of freedom itself resides in human consciousness because of the influence of this star system.
	www.souledout.org /cosmology/cossynthreflects/sirius.html (1818 words)

	The Sirius Research Group
		Sirius B is said to be almost the size of our Earth, yet appears to contain the mass of our Sun.
		It appears that inside of Sirius B the state of matter is so different that usual physical and chemical laws are not applicable.
		Since spinning magnetized objects generate a torsion field, Sirius B is therefore, a very likely candidate as a source for such fields.
	www.siriusresearchgroup.com /articles/digitaria.shtml (1357 words)

	Sirius (Site not responding. Last check: 2007-10-21)
		Sirius is the luminary of the constellation Canis Major, the Greater Dog, which represents Orion's larger hunting dog, and as such is commonly referred to as the "Dog Star." So great is its prominence that it has two "announcer stars" that from the mid- northern hemisphere rise before it, Procyon and Mirzam.
		Because of its brilliance, Sirius is the champion of all twinklers, the effect caused by variable refraction in the Earth's atmosphere.
		Given the 250 million year age of the system, Sirius B may once have been a hot class B3 star that could have contained as much as 6 or 7 solar masses, the star losing over 80 percent of itself back into interstellar space through earlier winds.
	www.astro.uiuc.edu /~kaler/sow/sirius.html (520 words)

	The Mysteries of Sirius
		"Sirius B was discovered in 1862 (not 1962) by Alvan Clark as he was testing the new lens he'd made for Dearborn Observatory's 18 1/2 inch refracting telescope.
		In 1915 the first spectrum of Sirius B was obtained by W.Adams at Mt.Wilson, which is all that would have been needed to classify it as a white dwarf.
		Sirius, the dog star, stands for the spirit of wisdom in the Zoroastrian tradition.
	www.mystae.com /restricted/streams/scripts/sirius.html (2278 words)

	Testcmab
		Holberg and co. confirm that Sirius B is a "carbon core" white dwarf; it is known that white dwarfs start out hot and gradually cool to "fl dwarfs".
		Sirius B orbit is perpendicular to the horizon.
		Sirius B is remnant of first generation star whose material formed others in the vicinity.
	www.geocities.com /martinclutt/testcmab.htm (1333 words)

	Chandra :: Photo Album :: Sirius A & B :: 26 Sep 00
		In contrast, Sirius A is the brightest star in the northern sky when viewed with an optical telescope, while Sirius B is 10,000 times dimmer.
		The story of Sirius B came full cycle when it was observed by Chandra in October 1999 during the calibration or test period.
		The white dwarf, Sirius B, has a mass equal to the mass of the Sun, packed into a diameter that is 90% that of the Earth.
	chandra.harvard.edu /photo/2000/0065/index.html (314 words)

	Astronomers use Hubble to weigh Dog Star's Companion
		Sirius B has a diameter of 7,500 miles (12,000 kilometres), less than the size of Earth, but is much denser.
		Despite being the brightest white dwarf known, Sirius B is about 10,000 times fainter than Sirius itself, making it difficult to study with telescopes on the Earth's surface because its light is swamped in the glare of its brighter companion.
		This Hubble Space Telescope image shows Sirius A, the brightest star in our nighttime sky, along with its faint, tiny stellar companion, Sirius B. Astronomers overexposed the image of Sirius A [at center] so that the dim Sirius B [tiny dot at lower left] could be seen.
	www.pparc.ac.uk /Nw/sirius.asp (1295 words)

	HubbleSite - NewsCenter - Astronomers Use Hubble to 'Weigh' Dog Star's Companion (12/13/2005) - The Full Story
		Sirius B has a diameter of 7,500 miles (12,000 kilometers), less than the size of Earth, but is much more dense.
		Sirius itself has a mass of two times that of the sun and a diameter of 1.5 million miles (2.4 million kilometers).
		Sirius B is about 10,000 times fainter than Sirius itself, making it difficult to study with telescopes on the Earth's surface because its light is swamped in the glare of its brighter companion.
	hubblesite.org /newscenter/archive/releases/2005/36/full (847 words)

	Sirius
		Sirius, aka Alpha Canis Majoris, aka Number One Big Dog Star, is the brightest star in the sky, blazing away at an apparent magnitude of -1.43.
		Orion), and the Sirius star system is thought by some to be Isis (Sirius A), Osiris (Sirius B), and the Dark Goddess as Sirius C (which apparently exists, but has not be seen directly by anyone other than the mentor of the Dogons).
		Sirius B, then being the archetype of a collapsed star, appropriately describes the death and diminution of Osiris.
	www.halexandria.org /dward108.htm (759 words)

	SPACE.com -- The 10 Brightest Stars (Site not responding. Last check: 2007-10-21)
		Sirius resides in the constellation Canis Major, the Big Dog, and is commonly called the Dog Star.
		Sirius is best seen at a favorable time during the winter months for northern hemisphere observers.
		The companion, dubbed Sirius B, has the mass of the Sun in a package as small as the Earth, having collapsed after depleting its hydrogen.
	www.space.com /scienceastronomy/brightest_stars_030715-1.html (989 words)

	Sirius Temple of Ascension, the Sirius Star Systems
		Sirius is a binary star system which means that it has two stars called Sirius (A) and Sirius (B).
		It is therefore possible that Sirius (B) was originally the larger of the two stars.
		Sirius (B) was not glimpsed until 1862, when American can telescope maker Alvan Clark detected it.
	www.siriusascension.com /sirius.htm (224 words)

	Sirius Travel - total solar eclipse & astronomical tours
		Through time, Sirius has shone faithfully in the winter sky when the nights are their longest.
		Once a year Sirius disappears in the light of the sun only to reappear in the early morning close to the summer solstice.
		This companion, Sirius B, was discovered visually in 1862 by the lensmaker Alvan Clark and identified as a white dwarf by a spectrum obtained in 1915 with the 60" telescope at Mt. Wilson Observatory.
	www.siriustravel.com /sirius.cfm (557 words)

	White Dwarfs and Electron Degeneracy
		The white dwarf Sirius-B was not seen until 1862, but was predicted in 1844 from the motion of Sirius-A.
		The star Sirius, referred to as Sirius-A, is perhaps most notable for the study of the "companion of Sirius" or Sirius-B which was the first example of a white dwarf star to be studied.
		Sirius itself is one of the brightest stars in the sky, being only 8.6 light-years away from us.
	hyperphysics.phy-astr.gsu.edu /hbase/astro/whdwar.html (729 words)

	Seeing Sirius B - Article
		Sirius is brilliant in the eyepiece but Sirius B, the “Pup” is not visible.
		Sirius B is a white dwarf that shines at magnitude 8.6.
		Before you try this it is helpful to know exactly where Sirius B currently is. If you imagine that Sirius is at the center of the face of a clock Sirius B would be at the 7 o’clock position.
	www.cloudynights.com /item.php?item_id=1387 (644 words)

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