Understanding Our Universe
3rd Edition
ISBN: 9780393614428
Author: PALEN, Stacy, Kay, Laura, Blumenthal, George (george Ray)
Publisher: W.w. Norton & Company,
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Question
Chapter 12.1, Problem 12.1CYU
To determine
The star that have the longest lifetime.
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Students have asked these similar questions
List the following 5 terms in order through a stars life cycle (starting with the sun), through the remainder of its lifetime:
a. Black dwarf
b. Planetary nebula
c. Red giant
d. Star (Sun)
e. White dwarf
Giant and supergiant stars are 10 to 1,000 times larger in diameter than the sun and
a.
are half as dense.
b.
10 to 106 less dense.
c.
are the same density.
d.
are twice as dense.
e.
10 to 106 more dense.
What characterizes a star of spectral-type A in the visible part of the spectrum?
Strong lines from neutral atoms and some molecules.
A smooth, featureless spectrum.
Strong Hydrogen lines and not much else.
Very weak Hydrogen lines with lots of strong lines from neutral atoms.
Chapter 12 Solutions
Understanding Our Universe
Ch. 12.1 - Prob. 12.1CYUCh. 12.2 - Prob. 12.2CYUCh. 12.3 - Prob. 12.3CYUCh. 12.4 - Prob. 12.4CYUCh. 12.5 - Prob. 12.5CYUCh. 12.6 - Prob. 12.6CYUCh. 12 - Prob. 1QAPCh. 12 - Prob. 2QAPCh. 12 - Prob. 3QAPCh. 12 - Prob. 4QAP
Ch. 12 - Prob. 5QAPCh. 12 - Prob. 6QAPCh. 12 - Prob. 7QAPCh. 12 - Prob. 8QAPCh. 12 - Prob. 9QAPCh. 12 - Prob. 10QAPCh. 12 - Prob. 11QAPCh. 12 - Prob. 12QAPCh. 12 - Prob. 13QAPCh. 12 - Prob. 14QAPCh. 12 - Prob. 15QAPCh. 12 - Prob. 16QAPCh. 12 - Prob. 17QAPCh. 12 - Prob. 18QAPCh. 12 - Prob. 19QAPCh. 12 - Prob. 20QAPCh. 12 - Prob. 21QAPCh. 12 - Prob. 22QAPCh. 12 - Prob. 23QAPCh. 12 - Prob. 24QAPCh. 12 - Prob. 25QAPCh. 12 - Prob. 26QAPCh. 12 - Prob. 27QAPCh. 12 - Prob. 28QAPCh. 12 - Prob. 29QAPCh. 12 - Prob. 30QAPCh. 12 - Prob. 32QAPCh. 12 - Prob. 33QAPCh. 12 - Prob. 34QAPCh. 12 - Prob. 35QAPCh. 12 - Prob. 36QAPCh. 12 - Prob. 37QAPCh. 12 - Prob. 38QAPCh. 12 - Prob. 39QAPCh. 12 - Prob. 40QAPCh. 12 - Prob. 42QAPCh. 12 - Prob. 43QAPCh. 12 - Prob. 44QAPCh. 12 - Prob. 45QAP
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- What are the approximate spectral classes of stars with the following characteristics? A. Balmer lines of hydrogen are very strong; some lines of ionized metals are present. B. The strongest lines are those of ionized helium. C. Lines of ionized calcium are the strongest in the spectrum; hydrogen lines show only moderate strength; lines of neutral and metals are present. D. The strongest lines are those of neutral metals and bands of titanium oxide.arrow_forwardArrange the following stars in order of their evolution: A. A star with no nuclear reactions going on in the core, which is made primarily of carbon and oxygen. B. A star of uniform composition from center to surface; it contains hydrogen but has no nuclear reactions going on in the core. C. A star that is fusing hydrogen to form helium in its core. D. A star that is fusing helium to carbon in the core and hydrogen to helium in a shell around the core. E. A star that has no nuclear reactions going on in the core but is fusing hydrogen to form helium in a shell around the core.arrow_forwardThe lowest mass for a true star is 1/12 the mass of the Sun. What is the luminosity of such a star based upon the mass-luminosity relationship?arrow_forward
- Look elsewhere in this book for necessary data, and indicate what the final stage of evolution-white dwarf, neutron star, or black hole-will be for each of these kinds of stars. A. Spectral type-O main-sequence star B. Spectral type-B main-sequence star C. Spectral type-A main-sequence star D. Spectral type-G main-sequence star E. Spectral type-M main-sequence stararrow_forwardAn eclipsing binary star system is observed with the following contact times for the main eclipse: each star in the system. The orbital velocity of the smaller star relative to the larger is 62,000 km/h. Determine the diameters for each star in the system.arrow_forwardWhat is the defining difference between a brown dwarf and a true star?arrow_forward
- Is the Sun an average star? Why or why not?arrow_forwardWhich of the following is the smallest? b. neutron star c. red giant d. main sequence star e. protostararrow_forwardA star with a radius three times that of the Sun and a surface temperature twice that of the Sun, will have a luminosity _______ times as great as the Sun's luminosity. A. 4 B. 9 C. 16 D. 64 E. 144arrow_forward
- The youngest stars are a. extreme population I. b. intermediate population I. c. extreme population II. d. intermediate population II. e. extreme population III.arrow_forwardA. Arrange the following stars in order of increasing temperature: Red, white, blue, yellow red100 billion stars Galaxies are the biggest groups of stars and can contain anywhere from a few million stars to many billions of stars. Dark energy and dark matter are two completely different things.arrow_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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