Celestial Sphere
What is the celestial sphere
an imaginary sphere of which the observer is the center and on which all celestial objects are considered to lie
what is a photon
a particle of light
How do stars make energy
Nuclear Fusion
White supports a white dwarf star against gravity?
Electron Degeneracy pressure
What is Mr. Taylors Favorite Constellation?
Scorpio
What is the ecliptic plane?
The ecliptic plane is defined as the imaginary plane containing the Earth's orbit around the sun.
what is the wave-particle duality?
light can be a wave and a particle at the same time.
What is meant by saying 2 solar masses
That the star is 2x that of our sun
What is neutron degeneracy pressure?
No two neutrons can occupy identical states, even under the pressure of a collapsing star of several solar masses.
How many constellations are in the night sky?
88
What is your horizon?
The astronomical horizon is the imaginary horizontal plane always at a 90-degree angle from the observer's zenith
Define Wavelength
The distance between on peak and another
What is the largest and smallest stars
Largest: 100 solar masses
Smallest: 0.08 solar masses
what is the chandra sekhar limit
1.4 solar masses - this is the largest a white dwarf can be
what is the diameter of the milky way?
100,000 light years
What is the meridian?
the meridian is the great circle passing through the celestial poles, as well as the zenith
Define Frequency
the number of waves that pass a fixed point in unit time
What is Helium Capture?
helium is captured by a series of more massive elements
what is a white dwarf nova
A nova is an explosion from the surface of a white-dwarf star in a binary star system
What is 1AU and how many Km is it?
1 AU = 150,000,000 Km
It is the average distance from earth to the sun
How do we find stars on the celestial sphere?
eclination and Right Ascension
List the E&M spectrum from longest wavelength to shortest
Radio, Microwave, infrared, visible, ultraviolet, x-rays, gamma rays
How does a 1 solar mass star die (state the entire process)?
Single shell fusion, helium flash, double shell fusion, planetary nebula.
What is a white dwarf super nova?
a white dwarf in a binary star system gains mass from its companion. As its mass increases, the temperature and pressure within the white dwarf also increase, until nuclear fusion re-ignites at its center.
What part of the sun are we able to see?
photosphere