Types of Stars
Large, cool, luminous stars.
What is a Red Giant?
90% of stars fall into this sequence.
What is Main Sequence?
Shows absolute magnitude on the vertical axis and temperature or spectral type on the horizontal axis. Shows stars’ mass, luminosity, temperature, and diameter.
What is a Hertzsprung-Russell diagram?
Lowest point of a wave.
What is the trough?
A unit larger than a light-year.
What is a parsec?
Small, dim, hot stars.
What is a White Dwarf?
A stars' power/energy output.
What is luminosity?
The region of a diagram which runs directly from the upper-left corner, where hot, luminous stars are represented, to the lower-right corner, where cool, dim stars are represented.
What is the main sequence?
Highest point of the wave.
What is the crest?
The apparent shift in position caused by the motion of the observer.
What is a parallax?
Our star.
What is the sun?
Stars are assigned spectral types in this order.
What is O, B, A, F, G, K, M?
109 Earths, or almost 10 Jupiters, lined up would equal the diameter of this star.
What is the Sun?
Distance between corresponding points of consecutive waves.
What is wavelength?
The four basic properties of a star.
What are mass, diameter, temperature and luminosity?
Will develop from a red dwarf.
What is a blue dwarf?
How bright a star appears.
What is apparent magnitude?
The Sun's surface temperature is about 5,800K. This makes it this type of star.
What is a G2 star?
When a star moves away, and wavelengths become longer.
What is a Red Shift?
When two stars are gravitationally bound together and orbit around a common center of mass.
What are binary stars?
Groups of bright stars that were named by ancient peoples after animals, mythological characters, or everyday objects.
What are constellations?
How bright a star would appear if it were placed at a distance of 10pc.
What is absolute magnitude?
Each spectral class is subdivided into more specific divisions from...
What is 0-9?
When a star moves towards the observer, wavelengths become shorter.
What is a Blue Shift?
A very large star grouping that contains a variety of different clusters of stars.
What is a galaxy?