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Title: Seyfert galaxies are always ____ galaxies. Post by: Darryl2057 on Mar 19, 2018 Seyfert galaxies are always ____ galaxies.
a. dwarf b. irregular c. spiral d. elliptical e. flocculent Question 2 If the photons from blackbody radiator radiation pass through a cool gas, a(n) ____ spectrum is produced. a. absorption b. emission c. continuous d. Doppler e. ionization Question 3 The high luminosity of a Seyfert galaxy____. a. comes from the halo of the galaxy b. is distributed through the spiral arms c. is spread through the central bulge d. is concentrated in a very small region of the nucleus e. varies over the course of years Question 4 The star Betelgeuse appears red; the star Rigel appears blue. What accounts for this difference? a. Betelgeuse and Rigel have different chemical compositions. b. Betelgeuse is moving away from Earth, Rigel is moving toward Earth. c. Betelgeuse is moving toward Earth, Rigel is moving away from Earth. d. The surface of Betelgeuse is hotter than the surface of Rigel. e. The surface of Betelgeuse is cooler than the surface of Rigel. Question 5 The energy output of a Seyfert galaxy____. a. changes slowly with a period of weeks b. is a hundred times the luminosity of the entire Milky Way c. is noticeable only in the infrared d. comes from starburst effects e. is concentrated in the spiral arms Title: Seyfert galaxies are always ____ galaxies. Post by: destiny_remy on Mar 19, 2018 Content hidden
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