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Date and Time of the Query: 2019-06-18 T15:39:34 PDT
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For refcode 2002A&A...389..355F:
Retrieve 28 NED objects in this reference.
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Copyright by European Southern Observatory (ESO). Reproduced by permission
2002A&A...389..355F Survey of the ISM in early-type galaxies. IV. The hot dust component F. Ferrari, M. G. Pastoriza, F. D. Macchetto, C. Bonatto, N. Panagia and W. B. Sparks Instituto de Fisica, UFRGS, Porto Alegre, Brazil Space Telescope Science Institute On assignment from the Space Science Department of ESA Received 28 August 2001/Accepted 15 April 2002 Abstract. We present mid-IR photometric properties for a sample of 28 early-type galaxies observed at 6.75, 9.63 and 15 microns with the ISOCAM instrument on board the ISO satellite. We find total mid-IR luminosities in the range (3-42) x 10^8 L_sun_. The spectral energy distributions (SED) of the galaxies were derived using the mid-IR data together with previously published UV, optical and near-IR data. These SEDs clearly show a mid-IR emission coming from dust heated at T ~ 260 K. Dust grains properties are inferred from the mid-IR colors. The masses of the hot dust component are in the range 10-400 M_sun_. The relationship between the masses derived from mid-IR observations and those derived from visual extinction are discussed. The possible common heating source for the gas and dust is investigated through the correlations between H{alpha} and mid-IR luminosities. Key words: galaxies: elliptical and lenticular, cD - ISM: general
Retrieve 28 NED objects in this reference.
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