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
Original language | English |
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Pages (from-to) | 4 |
Journal | Astronomy and Astrophysics |
Volume | 518 |
Issue number | 4 |
DOIs | |
Publication status | Published - 2010 |