Astronomy 16: Modern Astrophysics

Prof. David Cohen

Fall 2015
Tu., Th. 9:55 to 11:10
SC 113 (seminar room)


Eagle Nebula Pleiades M 43 Andromeda





posted 10/3

There will be a special SA session on Sunday night, in SC 102 (the room behind the coffee bar), at the usual time (7:30 to 9:30).

No lab meeting or colloquium this week.

With the homework due on Tuesday morning, I will have two sets of office hours on Monday, one from 12:30 to 1:30 and one from 3:30 to 4:30.

There will be a new, short homework assignment due on Friday, and we will have a regular SA session on Thursday night and I will also have office hours on both Thursday and Friday afternoon. Times to be announced soon.

Archive of old announcements.


posted 10/3

As I already posted last week: Homework 5 [pdf] is mostly about magnitudes and colors and binary stars. It has eight problems, and is due on Tuesday at the beginning of class.

We will discuss more about magnitudes and binary stars in class on Tuesday - we'll take the opportunity to go over a couple of the homework problems in class. And then we'll move on to the related material - on exoplanets. I'll put together a reading assignment/guide, as usual, and post it here by the end of the weekend. But if you want to get started, we'll be reading all of Ch. 12. We'll start to discuss it on Tuesday but of course we'll do the bulk of it on Thursday.

Archive of old assignments.

Upcoming Events

Astro 16 students are members of the Department of Physics and Astronomy, and are encouraged to participate in department activities beyond the classroom. This includes attending regular talks – colloquia given by visiting scientists – and attending, and helping out with, the monthly telescope open houses at the Peter van de Kamp Observatory, on the roof of the Science Center.

Check the department colloquium schedule. The next talk will Friday, October 30 at lunch time. The topic will be early-universe cosmology.

The next observatory open house is on Tuesday, October 13 at 9 pm. It'll be fall break, but if you're around, come by and play with the telescope.


Class Information

Read the course information document [pdf] (posted 9/20) for information about exams, homework lateness policy, grades, and accommodation.

A syllabus [pdf] (updated 4/11) is available
note that it will be periodically updated

David's office is SC 124 (across the hall from his old office)


Astronomy Picture of the Day

Messier 42; with links to articles about each Messier object

New Horizons at Pluto

Stellarium software for making sky maps

what's up in the sky this week

gravity simulator

Planet Crash

using your hands to measure angles

sky and weather information

observatory website

department website



This page is maintained by David Cohen
cohen -at-

Last modified: October 3, 2015