Question

Spectral type Mv luminosity L= Lo 10^{0.4 (M_{BV}-Mv)} 0 -4.5 5395 Lo B -0.4 123-6 Lo A 2 13.5 Lo F 3.7 2.83 Lo G 5.2 0.7 Lo K 7.4 0.09 Lo M 12.3 1.0 \times 10^{3} Lo

          Spectral type
Mv
luminosity L= Lo 10^{0.4 (M_{BV}-Mv)}
0
-4.5
5395 Lo
B
-0.4
123-6 Lo
A
2
13.5 Lo
F
3.7
2.83 Lo
G
5.2
0.7 Lo
K
7.4
0.09 Lo
M
12.3
1.0 \times 10^{3} Lo

Spectral type
Mv
luminosity L= Lo 10^0.4 (MBV-Mv)
0
-4.5
5395 Lo
B
-0.4
123-6 Lo
A
2
13.5 Lo
F
3.7
2.83 Lo
G
5.2
0.7 Lo
K
7.4
0.09 Lo
M
12.3
1.0 ×10^3 Lo

Added by Peter U.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Timothy James

06/14/2023

Step 1

The given luminosities are: Mv 0 -4.5 Luminosity L = Lo l0 5395 L0 3 -0.4 123-6 Lo 2 A 13.5 Lo F 37 2.83 Lo 5.2 Gr 0 Lo 7.4 12.3 K M 0.00 L0 1.0x10^3 L0 We can see that the luminosity of the O-star is given as L = Lo, which means it has the same luminosity as Show more…

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a) How many times more luminous is the single O-star versus all the other stars combined? b) What is the absolute V-band magnitude of the ENTIRE cluster? Spectral type Mv 0 -4.5 Luminosity L = Lo l0 5395 L0 3 -0.4 123-6 Lo 2 A 13.5 Lo F 37 2.83 Lo 5.2 Gr 0 Lo 7.4 12.3 K M 0.00 L0 1.0x10^3 L0