Query : 2010A&A...522A..24H

2010A&A...522A..24H - Astronomy and Astrophysics, volume 522, A24-24 (2010/11-1)

The impact of X-rays on molecular cloud fragmentation and the inital mass function.


Abstract (from CDS):

Star formation is regulated through a variety of feedback processes. In this study, we treat feedback by X-rays and discuss its implications. Our aim is to investigate whether star formation is significantly affected when a star forming cloud resides in the vicinity of a strong X-ray source. We perform an Eulerian grid simulation with embedded Lagrangian sink particles of a collapsing molecular cloud near a massive, 107M black hole. The chemical and thermal changes caused by radiation are incorporated into the FLASH code. When there is strong X-ray feedback the star forming cloud fragments into larger clumps whereby fewer but more massive protostellar cores are formed. Competitive accretion has a strong impact on the mass function and a near-flat, non-Salpeter IMF results.

Abstract Copyright:

Journal keyword(s): ISM: clouds - stars: formation - X-rays: ISM - methods: numerical

Simbad objects: 2

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Number of rows : 2
N Identifier Otype ICRS (J2000)
ICRS (J2000)
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024
1 Mrk 231 Sy1 12 56 14.2341182928 +56 52 25.238373852   14.68 13.84     ~ 1964 3
2 IC 4553 SyG 15 34 57.22396 +23 30 11.6084   14.76 13.88     ~ 2935 4

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