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The Herschel Virgo Cluster Survey. III. A constraint on dust grain lifetime in early-type galaxies

Clemens, M. S. and Fadda, D. (2010) The Herschel Virgo Cluster Survey. III. A constraint on dust grain lifetime in early-type galaxies. Astronomy and Astrophysics, 518 . Art. No. L50. ISSN 0004-6361.

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Passive early-type galaxies (ETGs) provide an ideal laboratory for studying the interplay between dust formation around evolved stars and its subsequent destruction in a hot gas. Using Spitzer-IRS and Herschel data we compare the dust production rate in the envelopes of evolved AGB stars with a constraint on the total dust mass. Early-type galaxies which appear to be truly passively evolving are not detected by Herschel. We thus derive a distance independent upper limit to the dust grain survival time in the hostile environment of ETGs of <46 ± 25 Myr for amorphous silicate grains. This implies that ETGs which are detected at far-infrared wavelengths have acquired a cool dusty medium via interaction. Given likely time-scales for ram-pressure stripping, this also implies that only galaxies with dust in a cool (atomic) medium can release dust into the intra-cluster medium.

Item Type:Article
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Fadda, D.0000-0002-3698-7076
Additional Information:© 2010 ESO. Received 29 March 2010, Accepted 30 April 2010, Published online 16 July 2010. Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA. M.C. and A.B. acknowledge support from contract ASI/INAF I/016/07/0.
Funding AgencyGrant Number
Agenzia Spaziale Italiana (ASI)/Istituto Nazionale di Astrofisica (INAF)I/016/07/0
Subject Keywords:galaxies: elliptical and lenticular, cD, galaxies: ISM, infrared: galaxies
Record Number:CaltechAUTHORS:20101201-080928610
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Official Citation:The Herschel Virgo Cluster Survey - III. A constraint on dust grain lifetime in early-type galaxies M. S. Clemens, A. P. Jones, A. Bressan, M. Baes, G. J. Bendo, S. Bianchi, D. J. Bomans, A. Boselli, E. Corbelli, L. Cortese, A. Dariush, J. I. Davies, I. De Looze, S. di Serego Alighieri, D. Fadda, J. Fritz, D. A. Garcia-Appadoo, G. Gavazzi, C. Giovanardi, M. Grossi, T. M. Hughes, L. K. Hunt, S. Madden, D. Pierini, M. Pohlen, S. Sabatini, M. W. L. Smith, J. Verstappen, C. Vlahakis, E. M. Xilouris and S. Zibetti A&A 518 L50 (2010) DOI: 10.1051/0004-6361/201014533
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:21082
Deposited By: Benjamin Perez
Deposited On:01 Dec 2010 17:08
Last Modified:09 Mar 2020 13:18

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