Vertical distribution of stars and flaring in the Milky Way

Sarkar, S and Jog, CJ (2019) Vertical distribution of stars and flaring in the Milky Way. In: Proceedings of the International Astronomical Union, 14 (S353). pp. 13-15.

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Abstract

We study the vertical stellar distribution of the Milky Way thin disk treated as a gravitationally coupled system of stars, HI and H2 gas in the field of dark matter halo, from R = 4 to 22 kpc. We show that the gas and halo gravity mainly constrain this vertical distribution toward the mid-plane in the inner and the outer Galaxy, respectively. The halo gravity reduces the disk thickness by a factor of 3-4 in the outer Galaxy. Despite this constraining effect the disk thickness increases steadily with radius, flaring steeply beyond 17 kpc, making a flaring disk a generic result. © 2020 International Astronomical Union.

Item Type:	Journal Article
Publication:	Proceedings of the International Astronomical Union
Publisher:	Cambridge University Press
Additional Information:	Copy right for this article belongs to Cambridge University Press
Keywords:	Galaxy: disk - Galaxy: halo - galaxies: kinematics & dynamics
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	24 Sep 2020 11:32
Last Modified:	24 Sep 2020 11:32
URI:	http://eprints.iisc.ac.in/id/eprint/65674

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