2004A&A...414...69W


C.D.S. - SIMBAD4 rel 1.7 - 2021.01.19CET16:31:27

2004A&A...414...69W - Astronomy and Astrophysics, volume 414, 69-78 (2004/1-4)

The Small Magellanic Cloud in the far infrared. II. Global properties.

WILKE K., KLAAS U., LEMKE D., MATTILA K., STICKEL M. and HAAS M.

Abstract (from CDS):

We present global IR properties of the Small Magellanic Cloud using an ISOPHOT 170µm map and re-visited IRAS data. The integrated 170µm flux is 14950±2300Jy, and the integrated IR flux is F1–1000=7.48x10–10W/m2. Discrete sources contribute 28%, 29%, and 36% to the integrated flux at 60µm, 100µm, and 170µm, respectively. Most of the total emission arises from diffuse emission regions surrounding the HII regions. The SED can be modelled by the composition of a 45K, a 20.5K and a 10K blackbody component with emissivity index n=2. A color temperature map is constructed from the ISOPHOT 170µm and the IRAS 100µm HiRes maps. The average dust temperature is TD=20.3K. The total dust mass is found to be MD=7.8x105M, yielding a gas-to-dust mass ratio Mgas/Mdust≃540, a value 25 times lower than found by former studies. The global star formation rate is estimated to SFRtotal≃0.05M/yr. The comparison with other irregular galaxies reveals the SMC as quiet with no peculiar FIR properties.

Abstract Copyright:

Journal keyword(s): galaxies: Magellanic Clouds - ISM: general - ISM: dust, extinction

Simbad objects: 11

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Number of rows : 11

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 9649 1
2 NAME IC 342 Group GrG 03 48 42 +68 00.8           ~ 98 1
3 NGC 1569 IG 04 30 49.186 +64 50 52.52 11.72 11.86 11.03     ~ 1164 3
4 NGC 2976 GiP 09 47 15.458 +67 54 58.97 11.77 11.03 10.16 9.51   ~ 595 1
5 NAME M 81-82 Group GrG 09 55 +69.1           ~ 642 0
6 M 81 Sy2 09 55 33.17306143 +69 03 55.0609270   7.89 6.94     ~ 4029 5
7 M 82 IG 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 5408 6
8 NGC 3077 GiP 10 03 19.0965510921 +68 44 01.556166166 11.23 10.85 10.14 9.74   ~ 697 0
9 NGC 6090 PaG 16 11 40.3 +52 27 21   14.0       ~ 400 2
10 IC 4662 bCG 17 47 09.192 -64 38 19.25   11.75 11.1 10.45   ~ 221 4
11 NGC 6822 G 19 44 56.199 -14 47 51.29   18 8.1     ~ 1448 0

    Equat.    Gal    SGal    Ecl

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2021.01.19-16:31:27

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