Astronomy 123: Stellar Astrophysics

Spring 2019
Prof. David Cohen

Science Center 149 - Math Seminar Room
Fridays 2:00 PM - 5:00 PM



Orion belt HR diagram solar spectrum eta Car: HST





We will meet as usual at 2pm on Friday in the math seminar room. We'll dive down below the surface of the star this week, but we won't go all the way to the center until next week. Cole will be bringing the snack this week.

Office hours this week are: Tuesday 2 to 4 pm, Wednesday 2:30 to 4 pm, and Thursday 1:30 to 3 pm.

There is a colloquium this week, and it will have great images of Saturn. It's on Thursday at 4:30 – please come if you can.

Archive of old announcements.


Read the ninth assignment [pdf] and solve the problems. One presentation this week and two warmup problems.

Archive of old assignments.


Class Information

Books and other resources

seminar snack schedule


astrophysical constants and astronomical data in cgs

SIMBAD for information about astronomical objects

ADS for finding research articles

Astronomy Picture of the Day

department website



Maintained by David Cohen.

Last modified: March 24, 2019