Downloading Chandra catalogs and Crossmatching to SDSS objects

(See note at the bottom of the page for doing this on your own computer...)

Step One: use the ChandraCrossmatch.ipynb notebook to download and crossmatch the Chandra data with the SDSS data for Abell 2065. After doing the download/crossmatch, make the following plots:

Step Two:
Make a cluster color magnitude diagram (CMD), showing the following (each with a different marker style):

Step Three:
On your CMD, overplot all X-ray detected, well-matched sources, using the SDSS properties of their matched SDSS source. Again, only plot well matched sources! Which ones are good candidates to be part of the cluster? Which ones probably aren't in the cluster?

Step Four:
Use show_in_notebook or show_in_browser to look at a table of your well-matched X-ray sources. Find the SDSS positions of the X-ray sources that are possible cluster members, and find them using SDSS Navigator. What do they look like, morphologically? Spectroscopically?

Note: The Chandra Crossmatch notebook uses an astropy affiliated package called astroquery that is not part of the normal astropy package, and needs to be installed on your computer. The installation commands are slightly different depending on how your python is installed (I think most of you use anaconda, but here are instructions for both anaconda and pip). In a system window (not in your jupyter notebook!) you want to type:

If you can't get astroquery installed, let me know and I'll make the Chandra data files available to you.