Abstract
We present Herschel-SPIRE observations of the perturbed galaxy NGC 4438 in the Virgo cluster. These images reveal the presence of extra-planar dust up to ∼4-5 kpc away from the galaxy's disk. The dust closely follows the distribution of the stripped atomic and molecular hydrogen, supporting the idea that gas and dust are perturbed in a similar fashion by the cluster environment. Interestingly, the extra-planar dust lacks a warm temperature component when compared to the material still present in the disk, explaining why it was missed by previous far-infrared investigations. Our study provides evidence for dust stripping in clusters of galaxies and illustrates the potential of Herschel data for our understanding of environmental effects on galaxy evolution.
| Original language | English |
|---|---|
| Article number | L63 |
| Journal | Astronomy and Astrophysics |
| Volume | 518 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2010 |
| Externally published | Yes |
Keywords
- dust, extinction
- galaxies: evolution
- galaxies: individual: NGC4438
- infrared: galaxies
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