Herschel-SPIRE observations of the disturbed galaxy NGC4438

作者：Cortese L^*; Bendo G J; Boselli A; Davies J I; Gomez H L; Pohlen M; Auld R; Baes M; Bock J J; Bradford M; Buat V; Castro Rodriguez N; Chanial P; Charlot S; Ciesla L; Clements D L; Cooray A; Cormier D; Dwek E; Eales S A; Elbaz D; Galametz M; Galliano F; Gear W K; Glenn J; Griffin M; Hony S; Isaak K G; Levenson L R; Lu N; Madden S; O'Halloran B; Okumura K; Oliver S; Page M J; Panuzzo P; Papageorgiou A; Parkin T J

来源：Astronomy & Astrophysics, 2010, 518: L63.

DOI：10.1051/0004-6361/201014547

• galaxies: evolution
• galaxies: individual: NGC4438
• infrared: galaxies
• dust, extinction

We present Herschel-SPIRE observations of the perturbed galaxy NGC4438 in the Virgo cluster. These images reveal the presence of extra-planar dust up to similar 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.

• 出版日期2010-8
• 单位中国地震局