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

Clemens, M. S., Jones, A. P., Bressan, A., Baes, M., Bendo, G. J., Bianchi, S., Bomans, D. J., Boselli, A., Corbelli, E., Cortese, Luca ORCID: https://orcid.org/0000-0002-7422-9823, Dariush, Aliakbar, Davies, Jonathan Ivor, De Looze, I., di Serego Alighieri, S., Fadda, D., Fritz, J., Garcia-Appadoo, D. A., Gavazzi, G., Giovanardi, C., Grossi, M., Hughes, Thomas Marcus, Hunt, L. K., Madden, S., Pierini, D., Pohlen, Michael, Sabatini, S., Smith, Matthew William L. ORCID: https://orcid.org/0000-0002-3532-6970, Verstappen, J., Vlahakis, C., Xilouris, E. M. and Zibetti, S. 2010. The Herschel Virgo Cluster Survey* III. A constraint on dust grain lifetime in early-type galaxies [Letter]. Astronomy & Astrophysics 518 , L50. 10.1051/0004-6361/201014533

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Abstract

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
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Subjects:	Q Science > QB Astronomy
Uncontrolled Keywords:	galaxies: elliptical and lenticular, cD / galaxies: ISM / infrared: galaxies
Additional Information:	Letter to the Editor. Pdf uploaded in accordance with publisher's policy at http://www.sherpa.ac.uk/romeo/issn/0004-6361/ (accessed 16/04/2014)
Publisher:	EDP Sciences
ISSN:	0004-6361
Date of First Compliant Deposit:	30 March 2016
Last Modified:	07 Aug 2024 22:33
URI:	https://orca.cardiff.ac.uk/id/eprint/32720

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