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Title: HOW TO FIND YOUNG MASSIVE CLUSTER PROGENITORS

Abstract

We propose that bound, young massive stellar clusters form from dense clouds that have escape speeds greater than the sound speed in photo-ionized gas. In these clumps, radiative feedback in the form of gas ionization is bottled up, enabling star formation to proceed to sufficiently high efficiency so that the resulting star cluster remains bound even after gas removal. We estimate the observable properties of the massive proto-clusters (MPCs) for existing Galactic plane surveys and suggest how they may be sought in recent and upcoming extragalactic observations. These surveys will potentially provide a significant sample of MPC candidates that will allow us to better understand extreme star-formation and massive cluster formation in the Local Universe.

Authors:
; ;  [1]; ; ;  [2]
  1. European Southern Observatory, Karl Schwarzschild Str. 2, D-85748 Garching bei Muenchen (Germany)
  2. Center for Astrophysics and Space Astronomy, University of Colorado, Boulder, CO 80309 (United States)
Publication Date:
OSTI Identifier:
22078485
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal Letters
Additional Journal Information:
Journal Volume: 758; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 2041-8205
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; GALAXY CLUSTERS; IONIZATION; SOUND WAVES; STAR CLUSTERS; STARS; UNIVERSE; VELOCITY

Citation Formats

Bressert, E., Longmore, S., Testi, L., Ginsburg, A., Bally, J., and Battersby, C. HOW TO FIND YOUNG MASSIVE CLUSTER PROGENITORS. United States: N. p., 2012. Web. doi:10.1088/2041-8205/758/2/L28.
Bressert, E., Longmore, S., Testi, L., Ginsburg, A., Bally, J., & Battersby, C. HOW TO FIND YOUNG MASSIVE CLUSTER PROGENITORS. United States. doi:10.1088/2041-8205/758/2/L28.
Bressert, E., Longmore, S., Testi, L., Ginsburg, A., Bally, J., and Battersby, C. Sat . "HOW TO FIND YOUNG MASSIVE CLUSTER PROGENITORS". United States. doi:10.1088/2041-8205/758/2/L28.
@article{osti_22078485,
title = {HOW TO FIND YOUNG MASSIVE CLUSTER PROGENITORS},
author = {Bressert, E. and Longmore, S. and Testi, L. and Ginsburg, A. and Bally, J. and Battersby, C.},
abstractNote = {We propose that bound, young massive stellar clusters form from dense clouds that have escape speeds greater than the sound speed in photo-ionized gas. In these clumps, radiative feedback in the form of gas ionization is bottled up, enabling star formation to proceed to sufficiently high efficiency so that the resulting star cluster remains bound even after gas removal. We estimate the observable properties of the massive proto-clusters (MPCs) for existing Galactic plane surveys and suggest how they may be sought in recent and upcoming extragalactic observations. These surveys will potentially provide a significant sample of MPC candidates that will allow us to better understand extreme star-formation and massive cluster formation in the Local Universe.},
doi = {10.1088/2041-8205/758/2/L28},
journal = {Astrophysical Journal Letters},
issn = {2041-8205},
number = 2,
volume = 758,
place = {United States},
year = {2012},
month = {10}
}