Show:
Properties of Stars
The Sun
Formation of Stars
Evolution of Stars
Absurd Stars
100
brightness we perceive on earth
What is apparent bightness
100
the sun's surface
What is the photosphere?
100
a star in the process of formation
What is protostar?
100
a large cool star where hydrogen burns in the shell
What is a Red Giant?
100
A small dense star that burns no fuel
What is a white dwarf?
200
the observed magnitude of a celestial body.
What is apparent magnitude?
200
cool regions in the suns photosphere created by protruding magnetic fields
What is a sunspot
200
many stars form together in a star formation called
What is binary system?
200
a large hot star that's fusing hydrogen
What is a Blue supergiant?
200
a massive star explodes
What is a type II supernova?
300
intrinsic brightness of a star summed over the entire electromagnetic spectrum
What is luminosity?
300
the fusion of hydrogen into helium occurs in this reaction
What is the proton-proton chain?
300
the amount of energy emitted by a star each second is luminosity and is measured in
What is a watt?
300
a star whose mass is too low for it to begin nuclear fusion
What is a brown dwarf?
300
A spinning neutron star
What is a pulsar?
400
a thin gas in front of a hotter source of continuous radiation produces a dark-line
What is an absorption spectrum?
400
The Sun currently occupies this region of the HR diagram
What is the main sequence?
400
a disk of gas and dust that orbited the newly formed Sun
What is the solar nebula?
400
a nearly explosive consumption of helium
What is the helium flash?
400
a region of spacetime from which nothing, not even light escapes
What is a black hole?
500
the distance at which a star has a parallax of 1 second of arc, also equal to 3.26 light years
What is a parsec?
500
Abrupt releases of solar magnetic energy
What is a solar flare?
500
A PRE-MAIN SEQUENCE STAR WITH MASSES LESS THAN 3 SOLAR Masses?
What is a T Tauri star?
500
heated ionized gas in a shell that glows
What is a planetary nebula?
500
the boundary of a black hole
What is the event horizon?