Paper:	Distribution Function of the Milky Way Inner Halo
Volume:	458, Galactic Archaeology: Near-Field Cosmology and the Formation of the Milky Way
Page:	225
Authors:	Hattori, K.; Yoshii, Y.; Beers, T. C.; Carollo, D.
Abstract:	Rich information on the formation process of the Milky Way is contained in the distribution function (DF) of the stellar halo. Here, we show how solar-neighbour observations of halo stars can constrain the DF of stellar halo. We model the inner halo of the Milky Way with a new family of DF models. We find that DF models that satisfy local constraints such as the observed density slope and velocity dispersions at the solar neighbourhood would exhibit distinct marginal energy and eccentricity distributions, depending on the global nature of the DF. Comparison of our results with recent observation by SDSS suggests that the velocity dispersion of the inner halo is isotropic at the center of the Milky Way and it becomes highly radially-biased at large Galactocentric distance.

Astronomical Society of the Pacific
Conference Series

© Copyright 1988 - 2024 - Astronomical Society of the Pacific
No part of the material protected by this copyright may be reproduced or used in any form other than for personal use without written permission from the ASP.

Page generated in 0.041 seconds