2002A&A...394..873H


Query : 2002A&A...394..873H

2002A&A...394..873H - Astronomy and Astrophysics, volume 394, 873-882 (2002/11-2)

Hot dust in normal star-forming galaxies: JHKL' photometry of the ISO Key Project sample.

HUNT L.K., GIOVANARDI C. and HELOU G.

Abstract (from CDS):

We present JHK and 3.8µm (L') photometry of 26 galaxies in the Infrared Space Observatory (ISO) Normal Galaxy Key Project (KP) sample and of seven normal ellipticals with the aim of investigating the origin of the 4µm emission. The majority of the KP galaxies, and all the ellipticals, have K-L≲1.0, consistent with stellar photospheres plus moderate dust extinction. Ten of the 26 KP galaxies have K-L>1.0, corresponding to a flat or rising 4 µm continuum, consistent with significant emission from hot dust at 600-1000K. K-L is anticorrelated with ISO flux ratio F6.75/F15, weakly correlated with line ratio [OI]/[Cii], but not with [Cii]/FIR or IRAS ratio F60/F100. Photodissociation-region models for these galaxies show that the hot dust responsible for red K-L resides in regions of high pressure and intense far-ultraviolet radiation field. Taken together, these results suggest that star formation in normal star-forming galaxies can assume two basic forms: an ``active'', relatively rare, mode characterized by hot dust, suppressed Aromatic Features in Emission (AFEs), high pressure, and intense radiation field; and the more common ``passive'' mode that occurs under more quiescent physical conditions, with AFEs, and without hot dust. The occurrence of these modes appears to only weakly depend on the star-formation rate per unit area. Passive star formation over large scales makes up the bulk of star-forming activity locally, while the ``active'' regime may dominate at high redshifts.

Abstract Copyright:

Journal keyword(s): galaxies: spiral - galaxies: starbursts - galaxies: ISM - ISM: dust

Simbad objects: 44

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Number of rows : 44
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 NGC 253 SyG 00 47 33.134 -25 17 19.68   8.03   6.94 8.1 ~ 3196 2
2 NGC 278 H2G 00 52 04.3452013728 +47 33 01.675026036   10.5       ~ 227 1
3 NGC 520 IG 01 24 35.071 +03 47 32.68 12.41 12.24 11.42     ~ 504 3
4 NGC 695 G 01 51 14.3479513536 +22 34 55.956444960   13.7       ~ 175 1
5 NGC 777 Sy2 02 00 14.9065707744 +31 25 45.850721628 13.09 12.49 11.45     ~ 173 2
6 NGC 821 G 02 08 21.1358498040 +10 59 41.832436704   12.210 11.310 10.739 9.744 ~ 558 0
7 UGC 2238 G 02 46 17.482 +13 05 44.33   15.2       ~ 119 1
8 NGC 1156 rG 02 59 42.8528847264 +25 14 28.352017320 12.13 12.32 11.74     ~ 299 1
9 NGC 1222 SBG 03 08 56.7398731608 -02 57 18.587969280   13.3   13.0 13.2 ~ 185 0
10 UGC 2519 G 03 09 18.3481095456 +80 07 49.819615428   14.30       ~ 39 1
11 NGC 1266 AGN 03 16 00.7739640240 -02 25 37.827013584   14   12.46   ~ 288 1
12 SBSG 0335-052 bCG 03 37 44.04 -05 02 38.5     16.65     ~ 455 1
13 UGC 2855 H2G 03 48 20.731 +70 07 58.37   14.6       ~ 132 2
14 NGC 1569 IG 04 30 49.186 +64 50 52.52 11.72 11.86 11.03     ~ 1211 3
15 NGC 1600 GiG 04 31 39.858 -05 05 09.97   8.9   10.81   ~ 358 0
16 NGC 1700 GiG 04 56 56.3160873072 -04 51 56.794713228   12   11.14   ~ 341 1
17 NGC 1741 IG 05 01 38.3 -04 15 25   13.7   13.02 13.6 ~ 256 0
18 UGCA 116 H2G 05 55 42.645 +03 23 32.23 10.74 11.68 11.46   11.82 ~ 525 0
19 NGC 2388 GiG 07 28 53.4535009080 +33 49 08.554343196   14.7       ~ 126 2
20 NGC 2300 IG 07 32 20.486 +85 42 31.90   12.2       ~ 327 0
21 M 82 IG 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 5681 6
22 NGC 3583 GiP 11 14 10.979 +48 19 06.16   11.6       ~ 189 1
23 NGC 3665 rG 11 24 43.630 +38 45 46.05 13.71 13.26 11.62     ~ 326 1
24 NGC 3683 H2G 11 27 31.890 +56 52 36.15   12.7       ~ 178 0
25 NAME NGC 3690 West GiP 11 28 30.69 +58 33 33.4   11.8       ~ 626 4
26 NGC 3690 IG 11 28 31.326 +58 33 41.80   13.19 12.86     ~ 950 4
27 NAME NGC 3690 East AGN 11 28 33.07 +58 33 54.2   11.8       ~ 629 4
28 NGC 3705 GiG 11 30 07.456 +09 16 35.87 12.00 11.86 11.07     ~ 167 1
29 NGC 3949 GiG 11 53 41.7311041896 +47 51 31.401451476   10.9       ~ 322 1
30 NGC 4102 LIN 12 06 23.115 +52 42 39.42   11.8       ~ 405 1
31 NGC 4194 AGN 12 14 09.615 +54 31 35.93   13.79 13.30     ~ 436 2
32 NGC 4228 SBG 12 15 39.174 +36 19 36.80 10.63 10.30 9.93 9.74   ~ 928 1
33 NGC 4490 GiP 12 30 36.368 +41 38 37.07 10.03 10.22 9.79     ~ 554 3
34 NGC 4519 GiG 12 33 30.278 +08 39 16.06   12.8       ~ 270 0
35 NGC 5253 AGN 13 39 55.990 -31 38 24.11 11.48 10.94 10.49 10.33 13.47 ~ 1327 4
36 NGC 5433 rG 14 02 36.065 +32 30 37.54   14.0       ~ 84 1
37 NGC 5713 GiP 14 40 11.528 -00 17 21.16 11.88 11.84 11.20     ~ 379 2
38 M 102 SyG 15 06 29.561 +55 45 47.91 11.12 10.74 9.89     ~ 534 3
39 NGC 5962 GiP 15 36 31.6809457296 +16 36 27.933030504 12.04 11.98 11.34     ~ 240 1
40 APG 293 G 16 58 27.8 +58 56 48           ~ 113 0
41 NGC 6286 GiG 16 58 31.3566512040 +58 56 10.114753560   14.2       ~ 175 1
42 NGC 7626 rG 23 20 42.524 +08 13 01.43   12.8       ~ 415 1
43 LEDA 90429 SyG 23 39 01.274 +36 21 08.77   16.17       ~ 209 1
44 Mrk 331 GiP 23 51 26.731 +20 35 10.22   14.9       ~ 221 0

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2023.02.04-09:33:32

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