NAC-tober Leonardo Clarke, "Structure of the Stellar Disk in the Outer Milky Way" скачать в хорошем качестве

NAC-tober Leonardo Clarke, "Structure of the Stellar Disk in the Outer Milky Way"

Using data from 2MASS, AllWISE, Gaia, and Pan-STARRS, we analyze a sample of sources likely to be “red clump giants”—low mass, moderate metallicity, helium core-burning red giants. These stars have a tight range of luminosity and are used as standard candles to create a three-dimensional map of the stellar density of the outer section of the Milky Way’s stellar disk, and estimate the projected 2D surface density map over the range R=10-20 kpc. In addition, we analyze a set of sources in the galactic plane obtained from 2MASS, GLIMPSE, and UKIDDS-GPS; and identify a break in the stellar density of red clump giants at a distance of ~13 kpc from Galactic center. Video created 10/22/2020