velocity dispersion relationship of galaxy clusters

[jbbutler]

…laxy clusters

If you are submitting a PR for a validation test (either adding a new one or updating an existing one), please post a link to the DESCQA web interface for the test you are submitting.

https://portal.nersc.gov/project/lsst/descqa/v2/?run=2018-08-03_116&test=virial_scale

[yymao]

@jbbutler thanks for the PR. Can you provide a bit more context about this test, and also explain the plot a little bit so that I can find suitable reviewer? (I'll review the code, but I usually would also find someone to review if the test is appropriate for the science goal.)

[jbbutler]

No problem! This test looks for a relationship between the velocity dispersion of galaxies within clusters and the total halo mass (multiplied by the normalized Hubble parameter). Specifically, it tests whether or not the catalog clusters follow the fitted red line, which is an equation from a publication about this viral scaling relationship. Each dot represents a galaxy cluster, the y axis is the velocity dispersion, and the x axis is the halo mass times normalized Hubble parameter.

…

On Fri, Aug 3, 2018, 5:17 PM Yao-Yuan Mao ***@***.***> wrote: @jbbutler <https://github.com/jbbutler> thanks for the PR. Can you provide a bit more context about this test, and also explain the plot a little bit so that I can find suitable reviewer? (I'll review the code, but I usually would also find someone to review if the test is appropriate for the science goal.) — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#132 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AnqpnAu84DDE8pPr1cTBoFGVjmY5a3Jsks5uNMvNgaJpZM4VurKM> .

[yymao]

Ready to go!