Abstract
We present Herschel-SPIRE observations at 250–500 μm 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 ~106 M ? 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 ~20–80. We discuss the different heating mechanisms for the dust features.
Original language | English |
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Article number | L45 |
Journal | Astronomy and Astrophysics |
Volume | 518 |
DOIs | |
Publication status | Published - 1 Jul 2010 |
Keywords
- galaxies: ellipticals and lenticular, cD, galaxies: individual: M 86, submillimeter: ISM, dust, extinction