Constraining the Stellar Mass Function in the Galactic Center via Mass Loss from Stellar Collisions
Joint Authors
Source
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-19, 19 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-01-24
Country of Publication
Egypt
No. of Pages
19
Main Subjects
Abstract EN
The dense concentration of stars and high-velocity dispersions in the Galactic center imply that stellar collisions frequently occur.
Stellar collisions could therefore result in significant mass loss rates.
We calculate the amount of stellar mass lost due to indirect and direct stellar collisions and find its dependence on the present-day mass function of stars.
We find that the total mass loss rate in the Galactic center due to stellar collisions is sensitive to the present-day mass function adopted.
We use the observed diffuse X-ray luminosity in the Galactic center to preclude any present-day mass functions that result in mass loss rates >10-5M⨀yr−1 in the vicinity of ~1″.
For present-day mass functions of the form, dN/dM∝M-α, we constrain the present-day mass function to have a minimum stellar mass ≲7M⨀ and a power-law slope ≳1.25.
We also use this result to constrain the initial mass function in the Galactic center by considering different star formation scenarios.
American Psychological Association (APA)
Rubin, Douglas& Loeb, Abraham. 2012. Constraining the Stellar Mass Function in the Galactic Center via Mass Loss from Stellar Collisions. Advances in Astronomy،Vol. 2011, no. 2011, pp.1-19.
https://search.emarefa.net/detail/BIM-451819
Modern Language Association (MLA)
Rubin, Douglas& Loeb, Abraham. Constraining the Stellar Mass Function in the Galactic Center via Mass Loss from Stellar Collisions. Advances in Astronomy No. 2011 (2011), pp.1-19.
https://search.emarefa.net/detail/BIM-451819
American Medical Association (AMA)
Rubin, Douglas& Loeb, Abraham. Constraining the Stellar Mass Function in the Galactic Center via Mass Loss from Stellar Collisions. Advances in Astronomy. 2012. Vol. 2011, no. 2011, pp.1-19.
https://search.emarefa.net/detail/BIM-451819
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-451819