# Astronomy 16: Modern Astrophysics

## Prof. David Cohen

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Fall 2016

Tu., Th. 9:55 to 11:10

SC 113 (seminar room)

## Announcements
Our first class meeting will be on Tuesday, August 30, in the seminar room in the Physics and Astronomy Department.
Our first
I will be sending out a short assignment More information about the class (syllabus, etc.) will be posted on this site shortly. ## Assignments
Please look over the reading assignment for class 2 [pdf], on Thursday. There is a small amount of reading in the textbook (on Kepler's laws), plus I ask you to look over these two short derivations of the expression for centripetal acceleration: [approximate but simple and more detailed and almost rigorous] and to make an orbit using the gravity simulator (which is permanently linked on the right side of this page).
Today in our first class, students worked together to apply the distance-size-angle relationship to determine the size of the Moon [pdf]. And we did a little (indoor) practice measuring angles with our hands. We also looked at this Hubble Space Telescope image of the Carina Nebula and Star Formation Region and this image of a partial solar eclipse (with the Space Station). Note that these Astronomy Picture of the Day images have informative descriptions.
The reading assignment for the first class [pdf] includes two problems that you must hand in by 6pm on Monday. Note that the reading is available on our class Moodle page (though just for this week; the book is available in the book store and at Cornell library). ## Upcoming EventsAstro 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 first colloquium of the semester – on Wednesday, September 21, will be given by an astrophysicist, Prof. Keivan Stassun (Vanderbilt), on the topic of new exoplanet discoveries expected from upcoming space telescope missions, Gaia and TESS. The next observatory open house is on Tuesday, September 13 at 9 pm. |
## Class InformationDavid's office is SC 125 and his lab is SC 124, right across the hall.
## Resourceswhat's up in the sky this week a Java-free orbit simulator |

*This page is maintained by David Cohen
cohen -at- astro.swarthmore.edu*

Last modified: August 30, 2016