Astronomy 1020-H Stellar Astronomy Spring_2014 Day-29. Course Announcements. 1 st Quarter Observing – Mon. 4/7 @8:30pm Archwood parking lot OR atrium of SSB Rain, shine, sleet, snow … it’s on Lunar Eclipse … Mon-Tues. 4/14-15/2014
Astr 1010 - Planetary Astronomy + Lab (H,R)
Astr 1020 - Stellar Astronomy + Lab (R)
Astr 2010 - Problems in Planet Astronomy
Astr 2011 - Intro. to Observational Astronomy
Astr 3005 - Observational Astronomy + Lab
Astr 4010 – Intro. to Stellar Astrophysics
Phys 3701 - Advanced Lab (this one will be astronomy based)
When the fuel runs out of the core, the luminosity increases. Why?
Increase in pressure and luminosity results in increased size and decreased surface temperature: red giant.
After the helium flash, the star is on the horizontal branch of the H-R diagram.
As an AGB star, the star expands even more than as a red giant, and cools.
If the conditions are right, the star will ionize the gas in the expanding outer layers.