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Title: ISOCAM mapping of the Whirlpool galaxy M 51
Authors: Sauvage, M
Blommaert, Joris
Boulanger, F
Cesarsky, CJ
Cesarsky, DA
Desert, FX
Elbaz, D
Gallais, P
Joncas, G
Metcalfe, L
Okumura, K
Ott, S
Siebenmorgen, R
Starck, JL
Tran, D
Vigroux, L
Issue Date: Nov-1996
Publisher: Springer verlag
Series Title: Astronomy and astrophysics vol:315 issue:2 pages:L89-L92
Abstract: We have obtained the first images of the 6.75 and 151 mu m continuum emission in the Whirlpool galaxy with ISOCAM, the infrared camera of the ISO1. These data reveal the well-developed, spiral arms of the galaxy, in addition to diffuse emission between arms and in the outer regions of the disk. There is a striking correspondence with the 15 mu m emission and the Her emission over the galaxy. We tighten this link by looking at the properties of the individual HII regions and show that the 15 mu m emission traces massive star formation and is not affected by extinction as is H alpha. The data show systematic mid-infrared color variations perpendicular to the arms, which we interpret as two distinct dust components contributing to the mid-infrared emission. We examine the implication of these color variations in light of our current understanding of dust at these wavelength.
ISSN: 0004-6361
Publication status: published
KU Leuven publication type: DI
Appears in Collections:Non-KU Leuven Association publications

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