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CLEMENS, M. S; JONES, A. P; DARIUSH, A; DAVIES, J. I; DE LOOZE, I; DI SEREGO ALIGHIERI, S; FADDA, D; FRITZ, J; GARCIA-APPADOO, D. A; GAVAZZI, G; GIOVANARDI, C; GROSSI, M; BRESSAN, A; HUGHES, T. M; HUNT, L. K; MADDEN, S; PIERINI, D; POHLEN, M; SABATINI, S; SMITH, M. W. L; VERSTAPPEN, J; VLAHAKIS, C; XILOURIS, E. M; BAES, M; ZIBETTI, S; BENDO, G. J; BIANCHI, S; BOMANS, D. J; BOSELLI, A; CORBELLI, E; CORTESE, L
Astronomy and astrophysics (Berlin), 07/2010, Letnik: 518, Številka: 1Journal Article
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 \textless46 +/- 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.
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Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
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Vir: Osebne bibliografije
in: SICRIS
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