Published in
Hans Publishers, Astronomy & Astrophysics, (518), p. L45
DOI: 10.1051/0004-6361/201014530
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Tools
The dust morphology of the elliptical Galaxy M 86 with SPIRE
,
Sd Alighieri,
L. Cortese,
Mwl W. L. Smith,
A. Boselli,
L. Ciesla,
Gj J. Bendo,
M. Pohlen,
S. di Serego Alighieri,
R. Auld,
Mj J. Barlow,
Jj J. Bock,
M. Bradford,
V. Buat
and other authors.
Full text: Download
Abstract
We present Herschel-SPIRE observations at 250-500 mu m of the giant elliptical galaxy M 86 and examine the distribution of the resolved cold dust emission and its relation with other galactic tracers. The SPIRE images reveal three dust components: emission from the central region; a dust lane extending north-south; and a bright emission feature 10 kpc to the south-east. We estimate that similar to 10(6) M-circle dot of dust is spatially coincident with atomic and ionized hydrogen, originating from stripped material from the nearby spiral NGC 4438 due to recent tidal interactions with M 86. The gas-to-dust ratio of the cold gas component ranges from similar to 20-80. We discuss the different heating mechanisms for the dust features.