Essential Astrophysics by Kenneth R. Lang

Author:Kenneth R. Lang
Language: eng
Format: epub, pdf
Publisher: Springer Berlin Heidelberg, Berlin, Heidelberg

All of these main sequence stars shine by converting hydrogen into helium. The effective disk temperature, mass, luminosity, radius, and lifetime of main-sequence stars of different spectral types are listed in Table 10.7.Table 10.7The main-sequence starsa

Spectral type

Effective temperature (K)

Mass (M ⊙)

Luminosity (L ⊙)

Radius (R ⊙)

Lifetime (years)

O5

44,500

60

7.9 × 105

12

3.7 × 106

B0

30,000

17.5

5.2 × 104

7.4

1.1 × 107

B5

15,400

5.9

8.3 × 102

3.9

6.5 × 107

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