Observations and modeling of the dust emission from the H2-bright galaxy-wide shock in Stephan's Quintet

Author： Guillard P.   Boulanger F.   Cluver M. E.   Appleton P. N.   Pineau des Forêts G.   Ogle P.  

Publisher： Edp Sciences

E-ISSN： 1432-0746|518|issue|A59-A59

ISSN： 0004-6361

Source： Astronomy & Astrophysics, Vol.518, Iss.issue, 2010-09, pp. : A59-A59

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Abstract

Context. Spitzer Space Telescope observations have detected powerful mid-infrared (mid-IR) H2 rotational line emission from the X-ray emitting large-scale shock (~15 × 35 kpc2) associated with a galaxy collision in Stephan's Quintet (SQ). Because H2 forms on dust grains, the presence of H2 is physically linked to the survival of dust, and we expect some dust emission to originate in the molecular gas.

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