On the Extreme Positive Feedback Star-forming Mode from Massive and Compact Super Star Clusters | Zendy

G. TenorioTagle | Zendy; Sergiy Silich | Zendy; A. RodríguezGonzález | Zendy; C. Muñoz–Tuñón | Zendy

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On the Extreme Positive Feedback Star-forming Mode from Massive and Compact Super Star Clusters

Author(s) -

G. TenorioTagle,

Sergiy Silich,

A. RodríguezGonzález,

C. Muñoz–Tuñón

Publication year - 2005

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/432665

Subject(s) - physics , supernova , star (game theory) , star formation , astrophysics , radiative cooling , instability , adiabatic process , star cluster , luminosity , gravitation , radiative transfer , stars , astronomy , mechanics , galaxy , optics , thermodynamics

The force of gravity acting within the volume occupied by young, compact andmassive superstar clusters, is here shown to drive in situ all the matterdeposited by winds and supernovae into several generations of star formation.These events are promoted by radiative cooling which drains the thermal energyof the ejected gas causing its accumulation to then rapidly exceed thegravitational instability criterion. A detailed account of the integratedionizing radiation and mechanical luminosity as a function of time is hereshown to lead to a new stationary solution. In this, the mass deposition rate$\dot M$, instead of causing a wind as in the adiabatic solution, turns into apositive feedback star-forming mode equal to the star formation rate. Some ofthe implications of this extreme positive feedback mode are discussed.Comment: 4 pages, 4 figures, accepted for publication in The Astrophysical Journal Letter

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