The dust morphology of the elliptical Galaxy M 86 with SPIRE

H.L. Gomez, M. Baes, L. Cortese, M. W. L. Smith, A. Boselli, L. Ciesla, G. J. Bendo, M. Pohlen, S. di Serego Alighieri, R. Auld, M.J. Barlow, J. J. Bock, M. Bradford, V. Buat, N. Castro-Rodriguez, P. Chanial, S. Charlot, D. L. Clements, A. Cooray, D. CormierJ. I. Davies, E. Dwek, S. Eales, D. Elbaz, M. Galametz, F. Galliano, W.K. Gear, J. Glenn, M. Griffin, S. Hony, K.G. Isaak, L. R. Levenson, N. Lu, S. Madden, B. O'Halloran, K. Okumura, S. Oliver, M.J. Page, P. Panuzzo, A. Papageorgiou, T.J. Parkin, I. Perez-Fournon, N. Rangwala, E. E. Rigby, H. Roussel, A. Rykala, N. Sacchi, M. Sauvage, M. R. P. Schirm, B. Schulz, L. Spinoglio, S. Srinivasan, Jason Stevens, M. Symeonidis, M. Trichas, M. Vaccari, L. Vigroux, C.D. Wilson, H. Wozniak, G.S. Wright, W.W. Zeilinger

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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 languageEnglish
Article numberL45
JournalAstronomy and Astrophysics
Volume518
DOIs
Publication statusPublished - 1 Jul 2010

Keywords

  • galaxies: ellipticals and lenticular, cD, galaxies: individual: M 86, submillimeter: ISM, dust, extinction

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