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Date and Time of the Query: 2019-05-22 T04:16:59 PDT
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For refcode 2008ApJ...677..249L:
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Copyright by American Astronomical Society. Reproduced by permission
2008ApJ...677..249L Spatially Resolved Imaging at 350 micron of Cold Dust in Nearby Elliptical Galaxies Leeuw, Lerothodi L.; Davidson, Jacqueline; Dowell, C. Darren; Matthews, Henry E. Abstract. Continuum observations at 350 micron of seven nearby elliptical galaxies for which CO gas disks have recently been resolved with interferometry mapping are presented. These SHARC II mapping results provide the first clearly resolved far-infrared (FIR)-to-submillimeter continuum emission from cold dust (with temperatures 31 K>~T>~23 K) of any elliptical galaxy at a distance >40 Mpc. The measured FIR excess shows that the most likely and dominant heating source of this dust is not dilute stellar radiation or cooling flows, but rather star formation that could have been triggered by an accretion or merger event and fueled by dust-rich material that has settled in a dense region cospatial with the central CO gas disks. The dust is detected even in two cluster ellipticals that are deficient in H I, showing that, unlike H I, cold dust and CO in ellipticals can survive in the presence of hot X-ray gas, even in galaxy clusters. No dust cooler than 20 K, either distributed outside the CO disks or cospatial with and heated by the entire dilute stellar optical galaxy (or very extended H I), is currently evident. Key words: Galaxies: Elliptical and Lenticular, cD, Galaxies: ISM, Galaxies: Photometry, Infrared: Galaxies, Radio Continuum: Galaxies, Submillimeter
Retrieve 7 NED objects in this reference.
Please click here for ADS abstract

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