The late-type stellar density profile in the Galactic Center: A statistical approach
Abstract
The late-type stellar population in the Galactic Center was first predicted to reside in a dynamically relaxed cusp (power law slope ranging from 3/2 to 7/4). However, other works - which rely on models to correct for projection effects - have suggested a flat distribution instead. The need for this correction is due to the lack of information regarding the line-of-sight distances. With a two decade long baseline in astrometric measurements, we are now able to measure significant projected radial accelerations, six of which are newly reported here, which directly constrain line-of-sight distances. Here we present a statistical approach to take advantage of this information and more accurately constrain the shape of the radial density profile of the late-type stellar population in the Galactic Center.
- Publication:
-
The Multi-Messenger Astrophysics of the Galactic Centre
- Pub Date:
- January 2017
- DOI:
- arXiv:
- arXiv:1610.02437
- Bibcode:
- 2017IAUS..322..235C
- Keywords:
-
- Galaxy: center;
- stars: late-type;
- techniques: astrometry;
- methods: statistical;
- Astrophysics - Astrophysics of Galaxies
- E-Print:
- 3 pages, 1 figure, Proceedings of IAU Symposium 322nd: The Multi-Messenger Astrophysics of the Galactic Centre