2010A&A...518L..50C

Query : 2010A&A...518L..50C

2010A&A...518L..50C - Astronomy and Astrophysics, volume 518, L50-50 (2010/7-2)

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

CLEMENS M.S., JONES A.P., BRESSAN A., BAES M., BENDO G.J., BIANCHI S., BOMANS D.J., BOSELLI A., CORBELLI E., CORTESE L., 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., 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. and ZIBETTI S.

Abstract (from CDS):

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±25Myr 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.

Abstract Copyright: ∼

Journal keyword(s): galaxies: elliptical and lenticular, cD - galaxies: ISM - infrared: galaxies

Simbad objects: 12

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Number of rows : 12
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 12638 1
2 NGC 4371 GiG 12 24 55.4333579760 +11 42 15.144247584 12.35 11.79 10.81     ~ 318 1
3 M 84 Sy2 12 25 03.74333 +12 53 13.1393 12.67 12.09 10.49     ~ 1762 2
4 M 86 GiG 12 26 11.814 +12 56 45.49 10.32 9.83 8.90   7.50 ~ 1084 1
5 NAME Virgo Cluster ClG 12 26 32.1 +12 43 24           ~ 6637 0
6 NGC 4435 GiG 12 27 40.503 +13 04 44.48 12.23 11.74 10.80     ~ 445 2
7 NGC 4459 H2G 12 29 00.0329905416 +13 58 42.826603332   11.6       ~ 539 0
8 NGC 4473 GiG 12 29 48.878 +13 25 45.55 11.60 11.16 10.20     ~ 644 1
9 NGC 4474 GiG 12 29 53.5396737408 +14 04 06.881708604   12.6       ~ 262 0
10 M 87 AGN 12 30 49.42338414 +12 23 28.0436859 10.16 9.59 8.63   7.49 ~ 7188 3
11 NGC 4550 GiP 12 35 30.5913588048 +12 13 14.921166792 12.97 12.56 11.68     ~ 537 1
12 NGC 4564 GiG 12 36 26.9869512504 +11 26 21.204472848 12.51 12.05 11.12     ~ 595 1

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