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Topic: Procyon B

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	Procyon (Alpha Canis Minoris)
		Procyon is a nearby yellow-white subgiant F star, about to shut down the fusion of hydrogen to helium in its core.
		Its tiny companion, Procyon B, is a white dwarf, first detected visually in 1896 by John Schaeberle with the 36-inch refractor at Lick Observatory, though its existence and an orbital period of 40 years had been deduced in 1861 by Arthur von Auswers based on wobbles he measured in the brighter star.
		Procyon B is about half the size of Earth, has a surface temperature of 8,700 K, and is separated from Procyon A by an average of only 14.9 AU – roughly the distance between Uranus and the Sun.
	www.daviddarling.info /encyclopedia/P/Procyon.html (227 words)

	Procyon - Wikipedia, the free encyclopedia
		Procyon (α CMi / α Canis Minoris / Alpha Canis Minoris) is the brightest star in the constellation Canis Minor and the eighth brightest star in the nighttime sky.
		Procyon A is a yellowish-white star somewhat larger and 7.5 times brighter than the Sun, of spectral type F. In fact, because it is bright even for its spectral class, it is thought to be a subgiant, meaning it has just finished fusing its hydrogen into helium and begun to expand.
		Procyon B is a faint white dwarf star, with an average separation from Procyon A of about 16 times the Earth's distance from the Sun or roughly the distance between Uranus and the Sun.
	en.wikipedia.org /wiki/Procyon (445 words)

	Nearby Stars
		Procyon A, or Alpha Canis Minoris A, is the brightest and most centrally located naked-eye star (07:39:18.12+05:13:29.98, ICRS 2000.0) of Constellation Canis Minor (the Smaller Dog).
		Procyon is also the upper left member of the "Winter Triangle" of first magnitude stars, whose other components are Sirius (Alpha Canis Minoris) at lower left and Betegeuse (Alpha Orionis) at right center (see also wide-field image from Astronomy Picture of the Day).
		However, Procyon B was not detected visually until 1896 by John M. Schaeberle (1853-1924) with the 36-inch refractor at Lick Observatory.
	hyperphysics.phy-astr.gsu.edu /hbase/starlog/procyon.html (529 words)

	Procyon
		Procyon is a double star, though it is difficult to resolve.
		Procyon might be so large, about the twice the diameter of the sun, that it is currently shedding material that is captured by its smaller but hotter companion.
		Procyon is a type F star —; its surface temperature is 6500 kelvins.
	ephemeris.sjaa.net /0602/d.html (398 words)

	Procyon
		Procyon is a yellowish F5IV-V subgiant to main sequence star 7 times as luminous as the sun and with twice the sun's diameter.
		Procyon is a binary star system with the bright star as the primary.
		Procyon B is a 10th magnitude star separated by about 4.5 arc sec from the A star, that is, about 16 AU away from the star.
	domeofthesky.com /clicks/procyon.html (144 words)

	Procyon - Memory Alpha
		Procyon (also Alpha Canis Minoris) is a star system consisting of binary companion stars, Procyon A and Procyon B, located about 11.4 light years from Sol.
		Procyon is most notable for the fact that in an alternate future, the battle where the Sphere Builders were defeated was fought here in the 26th century.
		Modern scientists have determined Procyon A is a sub-giant (spectral class F5 IV-V) star, whereas Procyon B is a white dwarf that orbits it at 16 AUs.
	memory-alpha.org /en/wiki/Procyon (264 words)

	Procyon
		Winter Triangle, Procyon is the luminary of Canis Minor, the smaller dog, and at magnitude zero (0.34) is the sky's eighth brightest star.
		Procyon A and B circuit each other every 40.8 years at an average distance of 15.0 Astronomical Units, a rather high eccentricity taking them between 21.0 and 8.9 AU.
		Sirius B of the first kind, Procyon B of the second, but an odd example that has an unusual collection of carbon and heavier elements.
	www.astro.uiuc.edu /~kaler/sow/procyon.html (417 words)

	Procyon - Memory Alpha, the Star Trek Wiki
		Procyon (also Alpha Canis Minoris) was a star system consisting of binary companion stars, Procyon A and Procyon B, located about 11.4 light years from Sol.
		Procyon is most notable for the fact that in an alternate future, the battle where the Sphere Builders were defeated was fought here in the 26th century.
		Modern scientists have determined Procyon A is a sub-giant (spectral class F5 IV-V) star, whereas Procyon B is a white dwarf that orbits it at 16 AUs.
	www.memory-alpha.org /en/index.php?title=Procyon&printable=yes (260 words)

	Spectral Type F - procyon (Site not responding. Last check: 2007-10-15)
		Procyon is a star of spectral type F5.
		Life on Procyon b would require either more protective pigments in their cells or a highly efficient mechanism for DNA repair.
		When Procyon B became a Red Giant some hundred million years ago, the increase in brightness would have severely stressed the climate on our model planet.
	www.exoplaneten.de /procyon/english.html (220 words)

	Procyon (Site not responding. Last check: 2007-10-15)
		Procyon (α Canis Minoris) is a brilliant star that receives its name from the fact that it precedes the star Sirius as it travels across the Earth's sky.
		These two "dog stars" are referred to in the most ancient literature and were venerated by the Babylonians and the Egyptians.
		Procyon is one of the closest stars to Earth's solar system, being only 11.4 light years away.
	bopedia.com /en/wikipedia/p/pr/procyon.html (125 words)

	Dogs
		Unlike Procyon, Sirius is a "metallic line star" with odd metal deficiencies and enhancements caused by gravitational settling and radiative lofting in its quiet atmosphere.
		Procyon B's original mass must have been larger than Procyon A's, but not by all that much since "B" is already starting to die (probably near 2.1 solar, about what Sirius's mass is now).
		Procyon B is a white dwarf with a helium atmosphere, its hydrogen envelope stripped off, but one oddly loaded with heavier elements.
	www.astro.uiuc.edu /~kaler/sow/dogs.html (1852 words)

	PROCYON (Site not responding. Last check: 2007-10-15)
		These contents are the property of the author and are reproduced from original without the author's express consent because of fair use and valid educational purposes.
		The eastern anchor of the Winter Triangle, Procyon is the Alpha star of Canis Minor, the smaller dog.
		Procyon's chief claim to fame is a tiny companion, Procyon B, a "white dwarf" discovered in 1895, though its existence was already known from the wobbles it exerts on the brighter star, Procyon A, which were discovered in 1844.
	www.geocities.com /erectus2001/namedstars/procyon.html (287 words)

	Procyon 2
		Indeed, Procyon A is unusually bright for its spectral type and so may be becoming a subgiant star that is beginning to evolve off the main sequence, as it begins to fuse the increasing amounts of helium "ash" mixed with hydrogen at its core.
		Procyon B manufactured lots of heavier elements which it puffed out into space and onto Procyon A before becoming a white dwarf.
		Procyon B appears to have 60.2 percent of Sol's mass (Girard et al, 2000) but only about two percent of its diameter.
	www.solstation.com /stars/procyon2.htm (1462 words)

	SPACE.com -- The 10 Brightest Stars
		Procyon is an example of a main sequence "subgiant" star, one that is beginning the death process by converting its remaining core hydrogen into helium.
		Procyon is currently twice the diameter of the Sun, one of the largest stars within 20 light-years.
		Procyon is orbited by a white dwarf companion detected visually in 1896 by John M. Schaeberle.
	space.com /scienceastronomy/brightest_stars_030715-8.html (349 words)

	Alachua Astronomy Club: FirstLight Tenth Year -- Jarman 1989 February
		Procyon -- Procyon is the 8th brightest star in the sky, and is 11.3 light years away.
		Procyon has a luminosity of 6 times that of the sun and is about twice as large.
		Procyon has several faint optical companions, the most interesting being a white dwarf called Procyon B which is the second closest of the white dwarfs to our solar system.
	www.floridastars.org /8902jarm.html (960 words)

	Procyon
		Procyon (AK–19) was laid down 15 January 1940 as MC hull 22, SS Sweepstakes, by the Tampa SB and DD Co., Fla.; launched and acquired by the Navy, through MARAD, 14 November 1940; sponsored by Miss Dorthy Ramspeck; and commissioned 8 August 1941 as Procyon (AK–19), at Charleston, S.C., Comdr.
		Procyon participated in the invasion landings at Sicily in July and at Salerno in September.
		Procyon, with men of the 180th Battalion of the famed 45th Army “Thunderbird” Division embarked, participated in the landings at the Golfe de St.
	www.history.navy.mil /danfs/p12/procyon-ii.htm (769 words)

	[No title]
		B will be observed in eight stars, both line_16: solar metallicity and old disk (since depletion is metallicity line_17: dependent), four that are extremely deficient in Li and Be, three line_18: that are moderately so, and one that is Li- and Be- normal.
		Procyon with ECH-B at 2497 and 2090A, Sigma Boo and 62 UMa with line_7: G270M at 2497A, and Theta Cyg with ECH-B at 2497A, for B in stars with line_8: only upper limits to Be (and thus extremely deficient Be).
		The B abundance of two Be-normal F dwarfs is close to solar and the line_6: abundance seen previously in B and A type stars.
	www.stecf.org /poa/FOS/props/4591c.prop (3203 words)

	SPACE.com -- The 10 Brightest Stars
		Procyon is an example of a main sequence "subgiant" star, one that is beginning the death process by converting its remaining core hydrogen into helium.
		Procyon is currently twice the diameter of the Sun, one of the largest stars within 20 light-years.
		Procyon is orbited by a white dwarf companion detected visually in 1896 by John M. Schaeberle.
	www.space.com /scienceastronomy/brightest_stars_030715-8.html (365 words)

	Travellers Tales - A Light Outing
		Procyon -A is about twice the size of the Sun and -B is over half the mass but smaller.
		Not too far from Procyon and a bit to the north relative to Earth is G51-15 (at 11.7 Light years), a cold old star that is worth a fly by.
		A is about the same size as the Sun and B a bit smaller, this gives you a pleasant, very long day once a year.
	members.optusnet.com.au /virgothomas/space/lightouting.html (1082 words)

	Procyon UV Flux Distribution (Site not responding. Last check: 2007-10-15)
		PROCYON is the Alpha star of Canis Minor.
		The star is an example of a "subgiant," one that is just beginning its death process, its internal core hydrogen about all burned away to helium.
		Procyon B is a white dwarf, which are dead stars that have gone through the entire cycle of stellar evolution and now consist of highly compressed gas that is just cooling off.
	ines.laeff.esa.es /Ines_PCentre/Demos/Fluxdist/procyon.html (128 words)

	Procyon
		Closer inspection of the system reveals Procyon to actually be a double star, consisting of one ordinary star (Procyon A) and a tiny, faint white dwarf companion (Procyon B).
		Procyon A is a main-sequence star just beginning its evolution off the main sequence, and is often designated as belonging to evolutionary class IV-V to indicate its borderline status between dwarf and subgiant stages.
		Procyon B is the degenerate remnant of what was once a much larger, brighter, and hotter star that eventually shed its hydrogen envelope to leave behind the ultradense carbon-helium core.
	astro.berkeley.edu /~dperley/procyon.html (668 words)

	BC95 Box & Conduit Bracket \| Labor Savings \| Truss T Hanger \| Electrical Construction
		The star is rich in elements heavier than hydrogen ("metals rich"), as it has about 1.4 times the iron abundance of Sol, and dust has been detected in the system (Kuchner and Brown, 2000 -- in postscript).
		Procyon B manufactured lots of heavier elements which it puffed out into space and onto Procyon A before becoming a white dwarf.
		(Procyon B is a white dwarf, a remnant stellar core, which enriched Procyon A with elements
	www.procyon2.com /procyon2_info.html (132 words)

	Zoom Astronomy Glossary: P
		Procyon (also called Alpha Canis Minoris, Antecanis, and the Little Dog Star) is the brightest star in the constellation Canis Minor and the eighth brightest star in the sky.
		Procyon is about as seven times more luminous than our Sun.This sub-giant star is near the end of its life; it's hydrogen core is almost spent (it has been converted into helium).
		Procyon has a companion, a bersly-visible white dwarf called Procyon B (it is only about the size of the Earth and is about 14.9 astronomical units from Proycon A), and this small star makes Procyon wobble from our perspective.
	www.enchantedlearning.com /subjects/astronomy/glossary/indexp.shtml (4166 words)

	The Universe within 12.5 Light Years - The Nearest stars
		With twice the diameter of the Sun, Procyon is also the largest star within 25 light years.
		Procyon is orbited by a white dwarf companion first seen optically in 1896.
		This binary system of two orange dwarf stars is famous for being the first star ever to have its distance measured by F Bessel in 1838.
	www.ldps.ws /Mirror/Universe/12lys.html (1054 words)

	Procyon AB System Orbits
		NOTE: This animation attempts to relate the possible orbits of Procyon AB (and a possibly disrupted habitable zone around Procyon A) to their common center of mass.
		Based on new measurements (Girard et al, 2000) found in the new Sixth Catalog of Visual Orbits of Binary Stars, Procyon A and B may be separated on average by a semi-major axis of 14.9 AUs (4.271") in an elliptical orbit (e= 0.407) that takes 40.82 years to complete.
		Lastly, the inclination of the orbit is 31.1°, from the perspective of an observer on Earth.
	www.solstation.com /orbits/procyonsys.htm (215 words)

	[No title]
		b) is exactly the same as it would be if he were standing still.
		A B main-sequence star and an A main-sequence star are in a visual binary system.
		b) the B star must be more evolved than the A star.
	www.astro.psu.edu /users/caryl/a10/test2_d.html (1049 words)

	The nearest Stars: Procyon
		The brightest star of Canis Minor is like Sirius a double system of a main sequence star and a white dwarf.
		The yellow Procyon A is surprisingly bright for its color and could be a subgiant, which becomes a red giant.
		Procyon B is even more dense as Sirius B. Once it was bigger as Procyon A. Constellation: Canis Minor
	jumk.de /astronomie/near-stars/procyon.shtml (69 words)

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