Loose Leaf For Explorations: Introduction To Astronomy
9th Edition
ISBN: 9781260432145
Author: Thomas T Arny, Stephen E Schneider Professor
Publisher: McGraw-Hill Education
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Chapter 13, Problem 6TY
To determine
Among the given options which star is hottest.
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Two stars are identified on the Hertzsprung-Russell diagram below.
Hertzsprung-Russell Diagram
Temperature
(K)
40,000 20,00010,000 7,500 5,500 4,500 3,000
10
10
10
www
10
10
B.
G
K
M
Spectral Class
Based on this diagram, how do the characteristics of Star 1 and Star 2 compare?
Star 1 is cooler and less bright than Star 2.
O Star 1 is hotter and brighter than Star 2.
O Star 1 is cooler and brighter than Star 2.
O Star 1 is hotter and less bright than Star 2.
O Aisoujun
Which star in the HR diagram below has the largest radius?
1060 M
10⁰
10⁰
10²
6
10
30 M
10 Solar Radi
Lifetime
10 yrs
0.1 Solar Radus
30,000
B Centauri
Spica
10M
MAIN
Bellatrix
Lifetime
B
Deneb
Rigal
6M
Achemar
SEQUENCE
Lifetime
WHITE
SUPERGIANTS
Canopus
Vega
10 Solar Rad
Procyon B
10,000
Srius
Lifetime
DWARFS
Alar
Arcturus
Procyon
Polaris
5 M
Littine"
10 yrs
S 1M
Cet
AFG
6,000
GIANTS
Centauri A
Pollux
Centaur B
Eridan
Antares
Aldebaran
K
Betelgeuse
Barnard's Star
61 Cyani A
61 Cyani B
Lacalle 9352
0.3M
Gliese 725 A
Gliese 725 8
Wolf 359
Proxima Centauri
M
Ross 128
DX Cancri
3,000
"51 Pegasi" is the name of the first normal star (besides the Sun) around which a planet was discovered. It is in the constellation Pegasus the horse. Its parallax is measured to be 0.064 arcsec.
a. What is its distance from us?
b. The apparent brightness is 1.79 × 10-10 J/(s·m2 ). What is the luminosity? How does that compare with that of the Sun? Look up the temperature: how do
Chapter 13 Solutions
Loose Leaf For Explorations: Introduction To Astronomy
Ch. 13 - Prob. 1QFRCh. 13 - Prob. 2QFRCh. 13 - Prob. 3QFRCh. 13 - Prob. 4QFRCh. 13 - Prob. 5QFRCh. 13 - Prob. 6QFRCh. 13 - Prob. 7QFRCh. 13 - Prob. 8QFRCh. 13 - Prob. 9QFRCh. 13 - Prob. 10QFR
Ch. 13 - Prob. 11QFRCh. 13 - Prob. 12QFRCh. 13 - Prob. 13QFRCh. 13 - Prob. 14QFRCh. 13 - Prob. 15QFRCh. 13 - Prob. 16QFRCh. 13 - Prob. 17QFRCh. 13 - Prob. 18QFRCh. 13 - Prob. 19QFRCh. 13 - Prob. 20QFRCh. 13 - Prob. 1TQCh. 13 - Would it be easier to measure a star's parallax...Ch. 13 - Prob. 3TQCh. 13 - Prob. 4TQCh. 13 - Prob. 5TQCh. 13 - Prob. 6TQCh. 13 - Prob. 7TQCh. 13 - Prob. 8TQCh. 13 - Prob. 9TQCh. 13 - Prob. 10TQCh. 13 - Prob. 1PCh. 13 - Prob. 2PCh. 13 - Prob. 3PCh. 13 - Prob. 5PCh. 13 - Prob. 6PCh. 13 - Prob. 7PCh. 13 - Prob. 8PCh. 13 - Prob. 9PCh. 13 - Prob. 10PCh. 13 - Prob. 11PCh. 13 - Prob. 12PCh. 13 - Prob. 13PCh. 13 - Prob. 14PCh. 13 - Prob. 15PCh. 13 - Prob. 16PCh. 13 - Prob. 17PCh. 13 - Prob. 1TYCh. 13 - Prob. 2TYCh. 13 - Prob. 3TYCh. 13 - Prob. 4TYCh. 13 - Prob. 5TYCh. 13 - Prob. 6TYCh. 13 - Prob. 7TYCh. 13 - Prob. 8TYCh. 13 - Prob. 9TY
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- Which star in the HR diagram below will no longer exist in 1 Billion years? 60 Mun 10⁰ 10⁰ 10 10² 10⁰ 10 10 10 10 30 M 10 Solar Radi Lifetime 10 yrs 0.1 Solar Radius 10 Solar Radus O Centauri 30,000 10M Sirius B MAIN Bellatrix Lifetime 10 B Rigal Deneb 6M MA Achemar SEQUENCE 18yrs WHITE SUPERGIANTS Canopus Vega 10 Soler Radi Procyon B 10,000 Srius Lifetime 10 DWARFS Alar Arcturus Procyon eyon Polaris 5 Mun Liteting 10 yrs SIM 7 Cet AFG 6,000 GIANTS Centauri A Pollux Centaur B Eridani Aldebaran K Artares 61 Cyani A Betelgeuse Barnard's Star 61 Cygni B Lacalle 9352 0.3M Gliese 725 A Gliese 725 B Ross 128 Wolf 359, Proxima Centauri M DX Cancri 3.000arrow_forwardWhich star in the table below has the greatest diameter? Star Name d (parsecs) Parallax (seconds of arc) Spectral Type 65 Tau 0.025 A7 IV HR 4621 B2 IV $$ \alpha $$ Pic 20 A7 V 58 Ori 0.005 M2 I HR 2491 2.5 A1 V a. 65 Tau b. HR 4621 c. $$ \alpha $$ Pic d. 58 Ori e. HR 2491arrow_forwardWhich of the following stars has the highest surface temperature? Treat the star as a blackbody. a)A dim red star b)A bright red star c)A bright orange star d)A dim orange star e)A bright yellow stararrow_forward
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