See Figure 12-10 in the text. The star $\zeta$ Canis Majoris has an absolute magnitude of -2.4 and a spectral luminosity class of B2 V. The star $\gamma$ Crucis has a spectral class of M4 and the same absolute magnitude as Canis Majoris. The spectral luminosity class of Crucis is probably
A) M-type white dwarf.
B) M4 II.
C) M4 Ia.
D) M4 V.

Question

See Figure 12-10 in the text. The star $\zeta$ Canis Majoris has an absolute magnitude of -2.4 and a spectral luminosity class of B2 V. The star $\gamma$ Crucis has a spectral class of M4 and the same absolute magnitude as Canis Majoris. The spectral luminosity class of Crucis is probably 
A) M-type white dwarf. 
B) M4 II. 
C) M4 Ia. 
D) M4 V.

Quizplus · Accepted Answer

The Answer of See Figure 12-10 in the text. The star $\zeta$ Canis Majoris has an absolute magnitude of -2.4 and a spectral luminosity class of B2 V. The star $\gamma$ Crucis has a spectral class of M4 and the same absolute magnitude as Canis Majoris. The spectral luminosity class of Crucis is probably 
A) M-type white dwarf. 
B) M4 II. 
C) M4 Ia. 
D) M4 V.

See Figure 12-10 in the Text ζ\zetaζ Canis Majoris Has an Absolute Magnitude of -2

See Figure 12-10 in the Text $\zeta$ Canis Majoris Has an Absolute Magnitude of -2