Stars/Reds/Quiz

Red stars is a stand-alone radiation astronomy lecture studying astronomical radiating sources, or natural radiating sources called red stars.

You are free to take this quiz based on red stars at any time.

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To master the information and use only your memory while taking the quiz, try rewriting the information from more familiar points of view, or be creative with association.

Enjoy learning by doing!

Quiz
{A recurrent nova is produced by a white dwarf star and a red giant circling about each other in a close? { orbit (i) }
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{Red-giant stars have (or theoretically may have) these in common: + potential 22Ne + helium-burning shells + non-standard neutrino losses + Lithium red line + N stars display F abundances up to 30 times the solar system value + RGB and AGB stars + a radius between 200 and 800 times that of the Sun
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{True or False, In 1866, after the new observatory had been completed, Schjellerup assembled a catalog of red stars. + TRUE - FALSE
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{Which of the following are associated with Type-Ia supernovae as a standard candle? - lack silicon lines + lack hydrogen lines + lack helium lines - lack lithium lines + expanding photosphere method - almost as luminous as the brightest red supergiants
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{True or False, Of some 824 red giant stars, lithium is detected in several stars. + TRUE - FALSE
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{Which of the following are associated with red clump stars as a standard candle? + many examples within reach of parallax measurements - internal extinction - star forming regions + sufficiently bright + local group galaxies - almost as luminous as the brightest red supergiants
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{Yes or No, In some 824 red giant stars, the Li I 670.78 nm line was detected in several stars, but only five objects presented a strong line. + Yes - No
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{Complete the text: Match up the letter for the object name with the radio or radar image below: Sun - A Mercury - B Venus - C Earth - D Moon (South Pole) - E Moon (North Pole) - F Moon (850 micron thermal emission) - G Mars (North Pole cross section) - H Toustatis - I Jupiter - J Saturn - K Titan - L Interstellar medium - M Milky Way - N 3C 98 - O 3C 31 - P 3C 380 - Q Moon (self radiation) - R NGC 4151 - S GRS 1915 - T M87 - U 3C 279 - V IRC+10216 - W Boomerang nebula - X R Sculptoris - Y { L (i) }. { Q (i) }. { F (i) }. { Y (i) }. { T (i) }. { N (i) }. { B (i) }. { X (i) }. { W (i) }. { H (i) }. { R (i) }. { U (i) }. { A (i) }. { V (i) }. { K (i) }. { O (i) }. { S (i) }. { J (i) }. { G (i) }. { P (i) }. { M (i) } { C (i) } { I (i) }. { E (i) }. { D (i) }.
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{True or False, Sirius is a likely first red source in Canis Major. + TRUE - FALSE
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{Which of the following are associated with planetary nebula as a standard candle? + observations made through a narrow band 5007 filter - internal extinction - star forming regions + relatively dust-free environments + found in galaxies of all Hubble types + almost as luminous as the brightest red supergiants
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{Supernovae of Type Ia lack hydrogen lines and helium lines in their optical spectra; during the first month after maximum light they do have a strong absorption feature produced by the red doublet (λ6347, λ6371 Å) of singly ionized? { silicon (i) }.
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{The extent of the Hα absorption trough along the major axes of quenched spirals is what? + more truncated than the distribution of the Hα emission line for H I deficient galaxies - contributed to by the new stellar population - less truncated than the distribution of the Hα emission line for H I deficient galaxies - due to the quenching - disks building up from the outside in
 * type=""}

{Complete the text: Match up the radiation letter with each of the detector possibilities below: Visual rays - M Violet rays - N Blue rays - O Cyan rays - P Green rays - Q Yellow rays - R Orange rays - S Red rays - T F547M { Q (i) }. F675W { T (i) }. broad-band filter centered at 404 nm { N (i) }. F588N { R (i) }. thallium bromide (TlBr) crystals { O (i) }. F606W { S (i) }. 18 micrometers FWHM at 490 nm { P (i) }. wide-gap II-VI semiconductor ZnO doped with Co2+ (Zn1-xCoxO) { M (i) }.
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{Complete the text: Match up the letter of the spherical object with each of the possibilities below: Sun - A Mercury - B Venus - C Earth - D Moon - E Mars - F Ceres - G Jupiter - H Callisto - I Europa - J Ganymede - K Io - L Enceladus - M Titan - N Uranus - O Titania - P Neptune - Q Triton - R Pluto - S { M (i) }. { R (i) }. { L (i) }. { H (i) }. { G (i) }. { J (i) }. { P (i) }. { S (i) }. { D (i) }. { O (i) }. { E (i) }. { I (i) }. { K (i) }. { Q (i) }. { N (i) }. { A (i) }. { F (i) }. { C (i) }. { B (i) }.
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{Helium has emission lines in which of the following colors? + violet + blue + cyan - green + yellow - orange + red
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{Hydrogen has emission lines in which of the following colors? + violet - blue + cyan - green - yellow - orange + red
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{Complete the text: The color of a star, as determined by the peak frequency of the visible light, depends on the temperature of the star's outer layers, including its { photosphere (i) }.
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{Which of the following are characteristic of high-velocity stars? + moving faster than 65 km/s - closer stars more affected + may point away from a stellar association + comet-like appearance - red shift - blue shift
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Hypotheses

 * 1) Nebulas are composed of red dust and rock.