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WorksheetsStars and stellar evolution
Total questions: 15
Worksheet time: 7mins
Doppler effect shifts the wavelengths of the stars moving away from us-
towards the redder domain
Towards the bluer domain
Extremely hot stars do not produce absorption spectra
True
False
Stars with low luminosity generally have a lower effective temperature
True
False
Which stars are called zero-age stars?
Red Giants
Blue Giants
White dwarfs
Main sequence stars
The luminosity of two stars at the same temperature is proportional to
Chemical composition
Radius
Radius squared
Distance from earth
As we move left to right along the HR diagram effective temperature decreases
True
False
How many spectral subclasses are there?
58
92
70
60
Subsolar ZAMS stars die younger
True
False
Older stars in a galaxy
are called pop II stars
are called pop I stars
contain much more heavier elements outside the core than younger stars
contain much less heavier elements outside the core than younger stars
CN cycle following stars are generally found in the HR diagram
in the upper part of the main sequence
in the lower part of the main sequence
near the giants and below the supergiants
near the white dwarfs
The stars enriched by material released in the ISM by supernovae are called
first generation stars
brown dwarfs
Pulsars
Second generation stars
Which supernovae light curve is this?
Type Ib
Type Ia
Type II
Helium flash
)What is the name of the nebula left behind by a supernovae recorded by Chinese astronomers in 1054 AD
Horsehead Nebula
Bernard's Loop
Crab Nebula
Orion's Nebula
Neutron Degeneracy pressure fails after 3 Solar Mass core
True
False
Complete this sequence of stellar evolution: Solar Mass star -> Giant ->______->White dwarf
Neutron Star
Black Hole
Carbon flash
Planetary Nebula
