2002A&A...389..355F

Query : 2002A&A...389..355F

2002A&A...389..355F - Astronomy and Astrophysics, volume 389, 355-366 (2002/7-2)

Survey of the ISM in early-type galaxies. IV. The hot dust component.

FERRARI F., PASTORIZA M.G., MACCHETTO F.D., BONATTO C., PANAGIA N. and SPARKS W.B.

Abstract (from CDS):

We present mid-IR photometric properties for a sample of 28 early-type galaxies observed at 6.75, 9.63 and 15 µ m with the ISOCAM instrument on board the ISO satellite. We find total mid-IR luminosities in the range (3-42)x108L☉. 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≃260K. Dust grains properties are inferred from the mid-IR colors. The masses of the hot dust component are in the range 10-400M☉. 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 Hα and mid-IR luminosities.

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Journal keyword(s): galaxies: elliptical and lenticular, cD - ISM: general

Simbad objects: 31

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Number of rows : 31
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 12650 1
2 2E 0150.5-1358 ClG 01 53 00.40 -13 44 18.0           ~ 387 0
3 NGC 720 Sy1 01 53 00.523 -13 44 19.25   12.4   10.36   ~ 522 0
4 NGC 741 rG 01 56 23.2 +05 37 35   13.2       ~ 294 2
5 NGC 1453 EmG 03 46 27.2307890592 -03 58 07.831476768   13   11.30   ~ 180 0
6 NGC 3258 EmG 10 28 53.588 -35 36 19.98   12.50 11.72 10.86   ~ 187 0
7 M 84 Sy2 12 25 03.74333 +12 53 13.1393 12.67 12.09 10.49     ~ 1763 2
8 M 49 Sy2 12 29 46.8 +08 00 01   13.21 12.17     ~ 2094 2
9 NAME NGC 4636 Group GrG 12 42 49.5 +02 41 08           ~ 562 0
10 NGC 4636 LIN 12 42 49.8333280080 +02 41 15.951929028   12.62 11.84     ~ 1117 1
11 NGC 4783 GiP 12 54 36.60 -12 33 28.2   12.5 12.80     ~ 125 1
12 NGC 4936 Sy2 13 04 17.091 -30 31 34.71   11.76 12.23 10.13 10.9 ~ 109 0
13 NGC 5044 BiC 13 15 23.9607836592 -16 23 07.547751744   11.9   10.74   ~ 501 0
14 NGC 5084 Sy2 13 20 16.923 -21 49 39.28   11.15 12.21 9.84 10.5 ~ 179 0
15 NGC 5813 LIN 15 01 11.2302420864 +01 42 07.141569696 12.00 11.45 10.46 10.06   ~ 637 1
16 NGC 5831 GiG 15 04 07.0002600408 +01 13 11.705607012   13.1   11.19   ~ 294 0
17 NGC 5903 GiG 15 18 36.529 -24 04 06.94   12.11 11.48 10.73   ~ 141 1
18 NGC 6407 GiG 17 44 57.664 -60 44 23.28   12.88   11.76   ~ 56 0
19 NGC 6721 EmG 19 00 50.815 -57 45 33.77   13.23 12.04 11.48   ~ 71 0
20 NGC 6758 GiG 19 13 52.3655323032 -56 18 36.095195484   12.53 11.56 10.83   ~ 82 0
21 NGC 6776 AG? 19 25 19.1485272024 -63 51 36.633840408   13.19 11.99 11.59   ~ 87 0
22 IC 4889 EmG 19 45 15.168 -54 20 38.91   12.25 11.08 10.73 11.5 ~ 138 0
23 NGC 6851 EmG 20 03 34.3587786984 -48 17 04.350059196   12.83 11.67 11.31   ~ 95 0
24 NGC 6868 Sy2 20 09 54.082 -48 22 46.25   11.58 9.22 10.01 7.91 ~ 226 1
25 NGC 6876 GiG 20 18 19.146 -70 51 31.80   11.76 11.54 10.45   ~ 129 0
26 NGC 7041 EmG 21 16 32.3686820808 -48 21 48.781202760   12.16 11.11 10.68   ~ 87 0
27 IC 5105 EmG 21 24 22.0100945880 -40 32 15.814424724   12.43 11.54 10.90   ~ 73 0
28 NGC 7562 GiP 23 15 57.4982037648 +06 41 15.227839176   13.0       ~ 166 0
29 NGC 7619 GiG 23 20 14.524 +08 12 22.63   12.7       ~ 449 0
30 NGC 7626 rG 23 20 42.524 +08 13 01.43   12.8       ~ 426 1
31 NGC 7796 Sy1 23 58 59.7964010520 -55 27 29.983148100   12.36 11.30 10.82   ~ 117 0

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