APPENDIX A 607■ Table A-7 ❙ Properties of Main-Sequence StarsSpectral
Type
Absolute Visual
Magnitude
(Mv) Luminosity*Temp.
(K)λmax
(nm) Mass* Radius*Average
Density
(g/cm^3 )
05
B0
B5
A0
A5
F0
F5
G0
G5
K0
K5
M0
M5
M85.8
4.1
1.1
0.7
2.0
2.6
3.4
4.4
5.1
5.9
7.3
9.0
11.8
16501,000
20,000
790
79
20
6.3
2.5
1.3
0.8
0.4
0.2
0.1
0.01
0.00140,000
28,000
15,000
9900
8500
7400
6600
6000
5500
4900
4100
3500
2800
240072.4
100
190
290
340
390
440
480
520
590
700
830
1000
120040
18
6.4
3.2
2.1
1.7
1.3
1.1
0.9
0.8
0.7
0.5
0.2
0.117.8
7.4
3.8
2.5
1.7
1.4
1.2
1.0
0.9
0.8
0.7
0.6
0.3
0.10.01
0.1
0.2
0.3
0.6
1.0
1.1
1.4
1.6
1.8
2.4
2.5
10.0
63
*Luminosity, mass, and radius are given in terms of the sun’s luminosity, mass, and radius.
■ Table A-8 ❙ The 15 Brightest StarsStar Name
Apparent Visual
Magnitude
(mv)Spectral
TypeAbsolute Visual
Magnitude
(Mv)Distance
(ly)CMa A
Car
Cen
Boo
Lyr
Aur
Ori A
CMi A
Ori
Eri
Cen AB
Aql
Tau A
Cru
Vir
Sirius
Canopus
Rigil Kentaurus
Arcturus
Vega
Capella
Rigel
Procyon
Betelgeuse
Achernar
Hadar
Altair
Aldebaran
Acrux
Spica1.47
0.72
0.01
0.06
0.04
0.05
0.14
0.37
0.41
0.51
0.63
0.77
0.86
0.90
0.91A1
F0
G2
K2
A0
G8
B8
F5
M2
B3
B1
A7
K5
B2
B11.4
3.1
4.4
0.3
0.5
0.6
7.1
2.7
5.6
2.3
5.2
2.2
0.7
3.5
3.38.7
98
4.3
36
26.5
45
900
11.3
520
118
490
16.5
68
260
220