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The Herschel Virgo Cluster survey, III : a constraint on dust grain lifetime in early-type galaxies

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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.
Keywords
OPTICAL-PROPERTIES, AMORPHOUS-CARBON, INTERSTELLAR GRAINS, CHANDRA OBSERVATIONS, X-RAY, ELLIPTIC GALAXIES, infrared: galaxies, galaxies: ISM, galaxies: elliptical and lenticular, cD, SPITZER-IRS, EMISSION, ACCRETION, GRAPHITE

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Chicago
Clemens, MS, AP Jones, A Bressan, Maarten Baes, GJ Bendo, S Bianchi, DJ Bomans, et al. 2010. “The Herschel Virgo Cluster Survey, III : a Constraint on Dust Grain Lifetime in Early-type Galaxies.” Astronomy & Astrophysics 518.
APA
Clemens, M., Jones, A., Bressan, A., Baes, M., Bendo, G., Bianchi, S., Bomans, D., et al. (2010). The Herschel Virgo Cluster survey, III : a constraint on dust grain lifetime in early-type galaxies. ASTRONOMY & ASTROPHYSICS, 518.
Vancouver
1.
Clemens M, Jones A, Bressan A, Baes M, Bendo G, Bianchi S, et al. The Herschel Virgo Cluster survey, III : a constraint on dust grain lifetime in early-type galaxies. ASTRONOMY & ASTROPHYSICS. 2010;518.
MLA
Clemens, MS, AP Jones, A Bressan, et al. “The Herschel Virgo Cluster Survey, III : a Constraint on Dust Grain Lifetime in Early-type Galaxies.” ASTRONOMY & ASTROPHYSICS 518 (2010): n. pag. Print.
@article{1236647,
  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 {\textlangle}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.},
  articleno    = {L50},
  author       = {Clemens, MS and Jones, AP and Bressan, A and Baes, Maarten and Bendo, GJ and Bianchi, S and Bomans, DJ and Boselli, A and Corbelli, E and Cortese, L and Dariush, A and Davies, JI and De Looze, Ilse and Alighieri, SD and Fadda, D and Fritz, Jacopo and Garcia-Appadoo, DA and Gavazzi, G and Giovanardi, C and Grossi, M and Hughes, TM and Hunt, LK and Madden, S and Pierini, D and Pohlen, M and Sabatini, S and Smith, MWL and Verstappen, Joris and Vlahakis, C and Xilouris, EM and Zibetti, S},
  issn         = {0004-6361},
  journal      = {ASTRONOMY \& ASTROPHYSICS},
  keyword      = {OPTICAL-PROPERTIES,AMORPHOUS-CARBON,INTERSTELLAR GRAINS,CHANDRA OBSERVATIONS,X-RAY,ELLIPTIC GALAXIES,infrared: galaxies,galaxies: ISM,galaxies: elliptical and lenticular,cD,SPITZER-IRS,EMISSION,ACCRETION,GRAPHITE},
  language     = {eng},
  pages        = {4},
  title        = {The Herschel Virgo Cluster survey, III : a constraint on dust grain lifetime in early-type galaxies},
  url          = {http://dx.doi.org/10.1051/0004-6361/201014533},
  volume       = {518},
  year         = {2010},
}

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