On the Onset of Secondary Stellar Generations in Giant Star-forming Regions and Massive Star Clusters

0435206 - ASÚ 2015 RIV US eng J - Článek v odborném periodiku
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
Grant CEP: GA ČR GAP209/12/1795
Institucionální podpora: RVO:67985815
Klíčová slova: galaxies: ISM * star clusters: general * galaxies: star formation
Kód oboru RIV: BN - Astronomie a nebeská mechanika, astrofyzika
Impakt faktor: 5.993, rok: 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.
Trvalý link: http://hdl.handle.net/11104/0239350