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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Chapter 14, Problem 10QAP
To determine
Using a variable star as a standard candle.
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The total mass of a binary system can be calculated from
a.
the ratio of the angular separation from the center of mass of each of the stars.
b.
the distance to the binary and its radial velocity.
c.
the semi major axis and period of the orbit.
d.
the radial velocities of the two stars.
e.
the time required for the small star to eclipse the larger star.
The hydrogen lines in spectral type A stars
a.
are most narrow for supergiants.
b.
are most narrow for main-sequence stars.
c.
cannot be used to estimate the luminosity of the star.
d.
are very weak and difficult to see.
e.
are useful in determining the apparent magnitude of the star.
If a stellar remnant is greater than 3 solar masses, the resulting object will be a
a.
brown dwarf.
b.
red dwarf.
c.
white dwarf.
d.
neutron star.
e.
black hole.
Chapter 14 Solutions
Understanding Our Universe
Ch. 14.1 - Prob. 14.1CYUCh. 14.2 - Prob. 14.2CYUCh. 14.3 - Prob. 14.3CYUCh. 14.4 - Prob. 14.4CYUCh. 14 - Prob. 1QAPCh. 14 - Prob. 2QAPCh. 14 - Prob. 3QAPCh. 14 - Prob. 4QAPCh. 14 - Prob. 5QAPCh. 14 - Prob. 6QAP
Ch. 14 - Prob. 7QAPCh. 14 - Prob. 8QAPCh. 14 - Prob. 9QAPCh. 14 - Prob. 10QAPCh. 14 - Prob. 11QAPCh. 14 - Prob. 12QAPCh. 14 - Prob. 13QAPCh. 14 - Prob. 14QAPCh. 14 - Prob. 15QAPCh. 14 - Prob. 16QAPCh. 14 - Prob. 17QAPCh. 14 - Prob. 18QAPCh. 14 - Prob. 19QAPCh. 14 - Prob. 20QAPCh. 14 - Prob. 21QAPCh. 14 - Prob. 22QAPCh. 14 - Prob. 23QAPCh. 14 - Prob. 24QAPCh. 14 - Prob. 25QAPCh. 14 - Prob. 27QAPCh. 14 - Prob. 28QAPCh. 14 - Prob. 29QAPCh. 14 - Prob. 30QAPCh. 14 - Prob. 31QAPCh. 14 - Prob. 32QAPCh. 14 - Prob. 33QAPCh. 14 - Prob. 34QAPCh. 14 - Prob. 35QAPCh. 14 - Prob. 36QAPCh. 14 - Prob. 37QAPCh. 14 - Prob. 38QAPCh. 14 - Prob. 39QAPCh. 14 - Prob. 40QAPCh. 14 - Prob. 41QAPCh. 14 - Prob. 43QAPCh. 14 - Prob. 44QAPCh. 14 - Prob. 45QAP
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- Absolute visual magnitude is a. the apparent magnitude of a star observed from Earth. b. the luminosity of a star observed from a distance of 1,000 pc. c. the apparent magnitude of a star observed from a distance of 10 pc. d. the luminosity of a star observed from Earth. e. c and d.arrow_forwardIf a stellar remnant is greater than 3 solar masses, the resulting object will be a a. red dwarf. b. white dwarf. c. neutron star. d. black hole.arrow_forwardIf a stellar remnant is in between 0.4 and 1.4 solar masses, the resulting object will be a a. brown dwarf. b. red dwarf. c. white dwarf. d. neutron star. e. black hole.arrow_forward
- Which type of star would be the largest? a. M b. O c. B d. K e. Aarrow_forwardIf a stellar remnant is greater than 1.4 solar masses but less than about 3 solar masses, the resulting object will be a a. red dwarf. b. white dwarf. c. neutron star. d. black hole.arrow_forwardThe period–luminosity relation is useful in determining a. the mass of a star for which the distance is known. b. the temperature of a star for which we know the luminosity. c. the radius of the bulge of our galaxy. d. the distance to globular clusters that contain Cepheid variables. e. the mass of the Milky Way Galaxy.arrow_forward
- An eclipsing binary will a. be more luminous than a visual binary. b. always be a spectroscopic binary. c. give off most of its light in the infrared. d. show a constant Doppler shift in its spectral lines. e. show two stars with variable proper motion.arrow_forwardThe life-cycle path followed by a star is determined by the star’s initial A. mass and size B. magnitude and color C. temperature and origin D. magnitude and structurearrow_forwardWhich of the following WOULD NOT characterizes the type(s) of star we would find at g, m, n, o, and p on the Hertzsprung-Russel Diagram (Figure 4) a. are all smaller than q,i,h. b. fuse hydrogen into helium. c. are called, “the main sequence”. d. fuse He into heavier elements. e. get smaller towards the right sidearrow_forward
- If an object formed from a cloud of dust and gas is less than 0.08 solar mass, it forms a a. black dwarf. b. white dwarf. c. green dwarf. d. brown dwarf. e. yellow dwarf.arrow_forwardWhich of these is NOT used as a spiral tracer? a. O stars b. B stars c. young open clusters d. white dwarfs e. certain higher-mass variable starsarrow_forwardWhich of the following binary star systems cannot exist? A. A 1 solar-mass main sequence star and a 4 solar mass red giant with a size 100 times smaller than the orbital distance. B. A 15 solar-mass main sequence star and a 10 solar mass red giant with a size 100 times smaller than the orbital distance. C. A 1 solar-mass main sequence star and a 4 solar-mass main sequence star. D. A 2 solar-mass main sequence star and a 1 solar mass red giant with a size a few times smaller than the orbital distance.arrow_forward
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