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