If the RR Lyrae stars in a globular cluster have average apparent magnitudes of +12, how far away (in pc) is the cluster? (Hints: See the following figure, and use the magnitude-distance formula: d = 10(mv - My+5)/5.) 6 Туре (classical) Cepheids -5 104 103 Type II Cepheids 102 RR Lyrae stars 0.3 3 10 30 100 Pulsation period (days) pc Need Help? Read It Luminosity, LIL Absolute magnitude
If the RR Lyrae stars in a globular cluster have average apparent magnitudes of +12, how far away (in pc) is the cluster? (Hints: See the following figure, and use the magnitude-distance formula: d = 10(mv - My+5)/5.) 6 Туре (classical) Cepheids -5 104 103 Type II Cepheids 102 RR Lyrae stars 0.3 3 10 30 100 Pulsation period (days) pc Need Help? Read It Luminosity, LIL Absolute magnitude
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![If the RR Lyrae stars in a globular cluster have average apparent magnitudes of +12, how far away (in pc) is the cluster? (Hints: See the following
figure, and use the magnitude-distance formula: d = 10(mv - Myt5)/5.)
-7
-6
Туре
(classical)
Cepheids
-5
104
103
Type II
Cepheids
-1
102
RR Lyrae stars
0.3
1
10
30
100
Pulsation period (days)
pc
Need Help?
Read It
Absolute magnitude
Luminosity, L/Lo](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F94da1b54-dd99-4454-9335-0ce03c19610c%2Fef945887-ab33-4934-9ab5-d257be8870b8%2F8gksb66_processed.jpeg&w=3840&q=75)
Transcribed Image Text:If the RR Lyrae stars in a globular cluster have average apparent magnitudes of +12, how far away (in pc) is the cluster? (Hints: See the following
figure, and use the magnitude-distance formula: d = 10(mv - Myt5)/5.)
-7
-6
Туре
(classical)
Cepheids
-5
104
103
Type II
Cepheids
-1
102
RR Lyrae stars
0.3
1
10
30
100
Pulsation period (days)
pc
Need Help?
Read It
Absolute magnitude
Luminosity, L/Lo
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