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Dãy chính Sắp xếpThe table below shows typical values for stars along the main sequence. The values of luminosity (L), radius (R) and mass (M) are relative to the Sun—a dwarf star with a spectral classification of G2 V. The actual values for a star may vary by as much as 20–30% from the values listed below.[5]
Phân loại sao | Bán kính | Khối lượng | Độ sáng | Nhiệt độ bề mặt | Ví dụ[7] |
---|---|---|---|---|---|
R/R ⊙ {\displaystyle {\odot }} </sub | M/M☉ | L/L ⊙ {\displaystyle {\odot }} | K | ||
O6 | 18 | 40 | 500.000 | 38.000 | Theta1 Orionis C |
B0 | 07,4 | 18 | 020.000 | 30.000 | Phi1 Orionis |
B5 | 03,8 | 06,5 | 000,800 | 16.400 | Pi Andromedae A |
A0 | 02,5 | 03,2 | 000,080 | 10.800 | Alpha Coronae Borealis A |
A5 | 01,7 | 02,1 | 000,020 | 08.620 | Beta Pictoris |
F0 | 01,3 | 01,7 | 000,006 | 07.240 | Gamma Virginis |
F5 | 01,2 | 01,3 | 000,002,5 | 06.540 | Eta Arietis |
G0 | 01,05 | 01,10 | 000,001,26 | 05.920 | Beta Comae Berenices |
G2 | 01.00 | 01.00 | 000,001.00 | 05.780 | Mặt Trời[note 1] |
G5 | 00,93 | 00,93 | 000,000,79 | 05.610 | Alpha Mensae |
K0 | 00,85 | 00,78 | 000,000,40 | 05.240 | 70 Ophiuchi A |
K5 | 00,74 | 00,69 | 000,000,16 | 04.410 | 61 Cygni A[8] |
M0 | 00,63 | 00,47 | 000,000,063 | 03.920 | Gliese 185[9] |
M5 | 00,32 | 00,21 | 000,000,0079 | 03.120 | EZ Aquarii A |
M8 | 00,13 | 00,10 | 000,000,0008 | 02.660 | Van Biesbroeck's star[10] |
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WikiPedia: Dãy chính http://www.astro.ulb.ac.be/~siess/WWWTools/Isochro... http://www.atlasoftheuniverse.com/hr.html http://www.chara.gsu.edu/RECONS/TOP100.posted.htm http://ads.harvard.edu/books/hsaa/toc.html http://adsabs.harvard.edu/abs/1997RvMP...69..337A http://adsabs.harvard.edu/abs/2005AJ....129.1063L http://cass.ucsd.edu/public/tutorial/HR.html http://simbad.u-strasbg.fr/simbad/ http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=... //www.ncbi.nlm.nih.gov/pubmed/15218132