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

  title={The Herschel Virgo Cluster Survey. III. A constraint on dust grain lifetime in early-type galaxies},
  author={Marcel Clemens and A. P. Jones and Alessandro Bressan and Maarten Baes and George J Bendo and Stefano Bianchi and Dominik J. Bomans and Alessandro Boselli and Edvige Corbelli and Luca Cortese and Ali A. Dariush and Jonathan Ivor Davies and I. De Looze and Sperello di Serego Alighieri and Dario Fadda and Jacopo Fritz and Diego Garcia-Appadoo and Giuseppe Gavazzi and Carlo Giovanardi and Marco Grossi and Thomas M. Hughes and Leslie K. Hunt and S. Madden and Daniele Pierini and Michael Pohlen and Silvio P. Sabatini and M. W. L. Smith and J. Verstappen and Catherine Vlahakis and Emmanuel M. Xilouris and Stefano Zibetti},
  journal={Astronomy and Astrophysics},
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… 

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