low mass stars
The spectral type of the coolest stars
M stars
Types of stars that create Iron in your blood
high mass stars
70% of the Sun is made of this element
Hydrogen
The most important factor determining the fate of a star
mass
The next life stage of a low mass star after it consumes all the hydrogen in the core
red giant
Types of stars end their lives with supernovae
High mass stars that can continue to have core fusion until they have iron cores
The primary product created by the fusion of hydrogen in the core of the Sun
Helium
This type of objects have too small a mass to have fusion in their cores
brown dwarf
The most massive element that can be created in low mass stars
Carbon
a dead end as far as creating energy in massive stars with the lowest mass per particle of any element
iron
This property of the Sun tells us the rate at which energy is being generated in its core
luminosity
Astronomers generally can measure a star's mass if only it is a member of a binary star system. We must know these two characteristics of the stars to measure the masses of the stars in a binary system.
orbital period and orbital distance
Types of stars end their lives as planetary nebulae
low mass stars
The spectral type of the stars that are the least common
O stars
The energy created during fusion in the Sun is originally in the form of gamma-rays, but the photons are degraded to this type of light by the time (100000 years later) they leave the Sun
optical photons
if you want to observe stars behind a dusty molecular cloud, you need to observe the light of this band (wavelength).
infrared