“List of stars more luminous than any closer star”的意思、由来-开放百科全书

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List of stars more luminous than any closer star

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This is a list of stars which are more luminous than any closer star, that is, stars which emit more radiation than any other star within the same distance of the Sun. The luminosities are measured in bolometric luminosity and not by visual luminosity. For example, Alpha Centauri A is the most luminous star within 5 light-years of the Sun. In order to find a star more luminous than α Cen, the radius would have to be extended out to 9 light years, to include Sirius. The closest star more luminous than Sirius is Vega, at 25 light years, and so on.

Name	Constellation	vis. mag.	Spectral type	Bolometric luminosity (Solar lum.)	abs. mag.	Distance (ly)
Sun	−26.74	1	4.83	0
Alpha Centauri A	Centaurus	−0.01	1.519	4.38	4.37
Sirius	Canis Major	−1.47	25.4	1.42	8.60
Vega	Lyra	0.026	40.12	0.582	25.04
Pollux	Gemini	1.14	43	1.08	33.78
Arcturus	Boötes	−0.05	170	−0.30	36.7
Aldebaran	Taurus	0.86	518	−0.641	65.3
Gacrux	Crux	1.64	820	−0.52	88.6
Achernar	Eridanus	0.46	3,150	−1.46	139
Sigma Sagittarii	Sagittarius	2.05	3,300	−2.17	228
Bellatrix	Orion	1.64	9,211	−2.78	250
Spica	Virgo	0.97	12,100	−3.55	250
Becrux, Mimosa	Crux	1.25	34,000	−3.92	280
Antares	Scorpius	1.09	97,700	−5.28	550
Betelgeuse	Orion	0.50	150,000	−5.85	724
Alnitak	Orion	1.77	250,000	−6.0	1,260
Alnilam	Orion	1.69	832,000	−6.95	2,000
WR 24	Carina	6.50	2,240,000	−7.05	5,000
Eta Carinae	Carina	4.55	5,000,000	−8.6	7,500
WR 25	Carina	8.80	6,300,000	−6.6	10,500
Melnick 34	Dorado	13.09	7,079,000	−7.9	163,000	in Large Magellanic Cloud
R136a1	Dorado	12.23	8,710,000	−8.09	163,000	in Large Magellanic Cloud

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