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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:, 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:, 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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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 (accessed 16/04/2014)
Publisher: EDP Sciences
ISSN: 0004-6361
Date of First Compliant Deposit: 30 March 2016
Last Modified: 11 Oct 2023 22:14

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