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On the Onset of Secondary Stellar Generations in Giant Star-forming Regions and Massive Star Clusters
- 1.0435206 - ASÚ 2015 RIV US eng J - Journal Article
Palouš, Jan - Wünsch, Richard - Tenorio-Tagle, G.
On the Onset of Secondary Stellar Generations in Giant Star-forming Regions and Massive Star Clusters.
Astrophysical Journal. Roč. 792, č. 2 (2014), 105/1-105/10. ISSN 0004-637X. E-ISSN 1538-4357
R&D Projects: GA ČR GAP209/12/1795
Institutional support: RVO:67985815
Keywords : galaxies: ISM * star clusters: general * galaxies: star formation
Subject RIV: BN - Astronomy, Celestial Mechanics, Astrophysics
Impact factor: 5.993, year: 2014
We evaluate the possible self-shielding of thermally unstable clumps against the UV radiation field. Self-shielding allows for a further compression of the reinserted matter, which rapidly develops a high-density neutral core able to absorb in its outer skin the incoming UV radiation. Under such conditions the cold (T cca 10 K) neutral cores soon surpass the Jeans limit and become gravitationally unstable, creating a new stellar generation with the matter reinserted by former massive stars. We present the results of several calculations of this positive star formation feedback scenario promoted by strong radiative cooling and mass loading.
Permanent Link: http://hdl.handle.net/11104/0239350
Number of the records: 1