Show:
Luminosity
Black Body Radiation
Stellar Spectra
The Hertzsprung-Russell Diagram
Types of Stars
100
energy radiated by a star per second
What is luminosity
100
5.67 X 10^-8
What is Stephan-Boltzsmann constant
100
determined by measuring wavelength at which most radiation is emitted
What is surface temperature
100
most stars fall into this category
What is the main sequence
100
stars that show a variation of luminosity over time
What are variable stars
200
received energy per second per unit area of a detector
What is apparent brightness
200
Stephan-Boltzmanns Law
What is L=σAT^4
200
temperature range of this spectra is 25000-50000
What is blue or O
200
Astronomer that plotted luminosity vs. temperature
Who is Ejnar Hertzsprung
200
stars that are large, cool, and have reddish appearance
What are red giants
300
Measures apparent brightness with a photosensitive silicon surface to make pixels
What is charge-coupled device
300
relationship between wavelength and surface temperature
What is Wien displacement law
300
letters of the spectral classes
What is o, b, a, f, g, k, m
300
astronomer who plotted absolute magnitude vs. spectral class
Who is Henry Norris Russell
300
the three classes of binary stars
What are visual, eclipsing, spectroscopic
400
unit for luminosity
What is watt
400
shows relative intensity vs. wavelength
What is black body spectrum
400
the splitting of a magnetic field into two lines
What is the Zeeman effect
400
percentage of stars that are white dwarfs
What is 9%
400
a prominent periodic variable star
What are cepheids
500
unit for apparent brightness
What is watts per meter squared
500
wavelength at which most energy is emitted
What is peak wavelength
500
Caused by the rotation of stars
What are Doppler shifts
500
determines the distance to a star
What is spectroscopic parallax
500
principle that requires white dwarfs to aquire large kinetic energies
What is pauli exclusion principle