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SN 2006gy and the core of its home galaxy, NGC 1260, viewed in X-ray light from the Chandra X-ray Observatory. The NGC 1260 galactic core is on the lower left and SN 2006gy is on the upper right. Credit: NASA/CXC/UC Berkeley/N.Smith et al.

Stars/Supernovas is a lecture about supernovas from a stellar perspective. This quiz is based on the lecture.

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Quiz[edit | edit source]


1 SN 1961F is in NGC?


2 Which of the following are attributes that make Type Ia supernovae potentially valuable standard candles?

occur in dusty regions
present in the old stellar populations of all galaxies
they have characteristic mottling
they lack hydrogen lines in their optical spectra
they lack helium lines in their optical spectra
have incipient resolution
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

3 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?


4 Which of the following are associated with standard candles?

Cepheid variables
Type Ia supernovae
the Sun
stellar spectral type
absolute magnitude
Tully-Fisher relation

5 Yes or No, The most frequently preferred standard candle for distances to galaxies is the Type-II supernova.


6 Complete the text:

Match up the standard candle with a representative image:
Tully-Fisher relation - A
surface brightness fluctuations - B
absolute magnitude - C
globular clusters - D
active galactic nuclei - E
Type Ia supernova - F
classical Cepheid variable - G
novae - H
planetary nebula - I

Maximum magnitude-rate of decline for novae.gif

B-, R-, I-, and H-band Tully-Fisher relations.gif

Blackbody spectral density.gif

SN2005ke labels.jpg

A further away schematic galaxy.gif


Planetary nebulae H-R.gif

Luminosity function for globular clusters.gif


7 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

8 The brightest stellar explosion ever recorded is?


9 Which of the following are associated with novae as a standard candle?

old stellar population
amount of Cherenkov light
relatively dust-free environments
easy to recognize

10 Yes or No, SN 1961V is a type IV supernova.


Hypotheses[edit | edit source]

  1. Distances are only as relative as the time it takes to travel them.

See also[edit | edit source]

External links[edit | edit source]

{{Physics resources}}