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2009MNRAS.396..918M - Mon. Not. R. Astron. Soc., 396, 918-934 (2009/June-3)
The global gas and dust budget of the Large Magellanic Cloud: AGB stars and supernovae, and the impact on the ISM evolution.
MATSUURA M., BARLOW M.J., ZIJLSTRA A.A., WHITELOCK P.A., CIONI M.-R.L., GROENEWEGEN M.A.T., VOLK K., KEMPER F., KODAMA T., LAGADEC E., MEIXNER M., SLOAN G.C. and SRINIVASAN S.
Abstract (from CDS):
AGB stars are one of the most important gas sources in the LMC, with supernovae (SNe), which produces about 2-4x10–2M☉/yr. At the moment, the SFR exceeds the gas feedback from AGB stars and SNe in the LMC, and the current star formation depends on gas already present in the ISM. This suggests that as the gas in the ISM is exhausted, the SFR will eventually decline in the LMC, unless gas is supplied externally.
Our estimates suggest `a missing dust-mass problem' in the LMC, which is similarly found in high-z galaxies: the accumulated dust mass from AGB stars and possibly SNe over the dust lifetime (400-800Myr) is significant less than the dust mass in the ISM. Another dust source is required, possibly related to star-forming regions.
Abstract Copyright: © 2009 The Authors. Journal compilation © 2009 RAS
Journal keyword(s): stars: AGB and post-AGB - stars: mass-loss - supernovae: general - dust, extinction - galaxies: evolution - galaxies: individual: Magellanic Clouds
Simbad objects: 20
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