Stellar classification - Quiz
A) Infrared B) Ultraviolet C) Visible light D) Radio waves
A) 1 in 1,000 B) 1 in 1,000,000 C) 1 in 100 D) 1 in 3,000,000
A) Excessive cooling B) Complicated surroundings C) Low luminosity D) Distance from Earth
A) Si IV to O III B) He II 4541 to He I 4471 C) He I 4471 to Hydrogen Balmer D) N IV 4058 to N III 4634
A) O3 B) O7 C) O9 D) O5
A) Neutral helium lines B) Si IV to C III C) He II to Hydrogen Balmer D) N IV 4058 to N III 4634-40-42
A) Neutral helium lines B) Hydrogen Balmer lines C) N IV lines D) He II emission lines
A) 500 km/s B) 1,000 km/s C) 5,000 km/s D) 2,000 km/s
A) They lack helium B) They burn hydrogen fuel very quickly C) They have cold cores D) They have unstable atmospheres
A) 1978 B) 1943 C) 2000 D) 1971
A) O9.7 B) O4 C) O2 D) O3
A) S Monocerotis B) The Sun C) Betelgeuse D) 10 Lacertae
A) S Monocerotis B) Vega C) Sirius D) 10 Lacertae
A) It strengthens B) It becomes an emission line C) It disappears immediately D) It weakens
A) Low gravitational pull B) Extreme stellar wind velocity C) Excessive ultraviolet radiation D) High metallic content
A) A prism or diffraction grating B) A specialized telescope lens C) A digital image sensor D) A radio frequency receiver
A) Age of the star B) Temperature of the photosphere C) Velocity of the star D) Distance from Earth
A) The chemical age of the star B) The ionization state C) The rotational speed of the star D) The total mass of the star
A) G B) O C) A D) M
A) D B) W C) C D) S
A) O, B, and A B) W, S, and C C) L, T, and Y D) F, G, and K
A) Luminosity class B) The chemical abundance index C) The number of stellar companions D) Spectral temperature class
A) Young stars from old stars B) Solid surfaces from gaseous surfaces C) Giant stars from dwarfs D) Binary systems from single stars
A) III B) IV C) I D) V
A) O5I B) A0V C) G2V D) M0III
A) 2,500 K B) 3,000 K C) 10,000 K D) 5,800 K
A) White B) Yellow C) Green D) Blue
A) A deep shade of yellow/orange B) Bright red C) Deep purple D) Pure white
A) Red and infrared B) Green, cyan, indigo, or violet C) Red, orange, or yellow D) Blue and white
A) Surface temperature B) Absolute mass C) Color indices D) Ionization energy
A) Mass-Klassification B) Main-sequence Kinetic C) Molecular Kelvin D) Morgan–Keenan
A) II B) 0 or Ia+ C) V D) III
A) Cecilia Payne B) Meghnad Saha C) Annie Jump Cannon D) Ejnar Hertzsprung
A) O9.7 B) G2 C) A0 D) M5
A) Cecilia Payne B) Annie Jump Cannon C) Henry Draper D) Meghnad Saha
A) Annie Jump Cannon B) Cecilia Payne C) Meghnad Saha D) Ejnar Hertzsprung
A) Only for O-type stars B) Only for M-type stars C) No D) Yes
A) Atomic weight B) Chemical composition C) Spectral characteristics D) Surface gravity
A) Yerkes Observatory B) Mauna Kea Observatory C) Harvard Observatory D) Palomar Observatory
A) Increased magnetic fields B) Higher surface gravity C) Greater stellar radius D) Lower surface temperature
A) V B) IV C) VII D) VI
A) III B) I C) V D) VII
A) Vz B) Vn C) Ve D) Vb
A) Angelo Secchi B) Annie Jump Cannon C) Williamina Fleming D) Edward C. Pickering
A) 1866 B) 1875 C) 1880 D) 1890
A) The Henry Draper memorial catalogue B) The Yerkes luminosity classes C) The neutron star classification D) The Harvard classification
A) Williamina Fleming B) Edward C. Pickering C) Antonia Maury D) Mary Anna Draper
A) Edward C. Pickering B) Henry Draper C) Angelo Secchi D) Williamina Fleming
A) 1905 B) 1899 C) 1890 D) 1866
A) Mary Anna Draper B) Annie Jump Cannon C) Antonia Maury D) Williamina Fleming
A) Exactly 10 B) Less than 50 C) More than 200 D) 1,000
A) P B) A C) Q D) O
A) 1912 B) 1897 C) 1901 D) 1890
A) Forty-eight B) Ten C) Twelve D) Twenty-two
A) Greek symbols B) Arabic numerals C) Lowercase letters D) Roman numerals
A) Bright B) Average width C) Sharp D) Hazy
A) Sharp B) Hazy C) Average width D) Clear
A) 4,800 B) 100 C) 681 D) 1,000
A) The lettered types system B) The Secchi system C) The Mount Wilson system D) The Roman numeral system
A) Primary stars B) Protostars C) Planetary nebulae D) Peculiar spectra
A) Peculiar spectra B) Planetary nebulae C) Quiet stars D) Quasars
A) 1920 B) 1912 C) 1897 D) 1901
A) Subdwarf B) Standard dwarf C) Supergiant D) Small dwarf
A) Dense star B) Double star C) Dwarf D) Dark star
A) Small giant B) Supergiant C) Secondary giant D) Subgiant
A) Common star B) Compact star C) Supergiant D) Center star
A) Type specimens B) Age of the star C) Distance from Earth D) Chemical composition
A) Younger B) Brighter C) Larger D) Hotter
A) Older B) Smaller C) Fainter D) Cooler
A) Massive B) Early C) Bright D) Late
A) Early B) Late C) Cold D) Dim
A) Gravitational contraction B) Nuclear fusion C) Stellar accretion D) Supernova explosion
A) Kelvin–Helmholtz mechanism B) Nuclear fission C) Thermal expansion D) Radiative pressure
A) Radioactive decay B) Chemical combustion C) Nuclear fusion D) Gravitational contraction
A) White B) Blue C) Red D) Yellow
A) B0 B) B8 C) B2 D) B5
A) Helium B) Iron C) Silicon D) Magnesium
A) Globular clusters B) OB associations C) Black holes D) Planetary nebulae
A) Alkaid B) Regulus C) Alnilam D) Rigel
A) Orbital velocity B) Rotation C) Pulsation rate D) Expansion rate |
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