2010A&A...519A..67I


C.D.S. - SIMBAD4 rel 1.7 - 2020.11.25CET10:24:46

2010A&A...519A..67I - Astronomy and Astrophysics, volume 519, A67-67 (2010/9-1)

Submillimeter to centimeter excess emission from the Magellanic Clouds. I. Global spectral energy distribution.

ISRAEL F.P., WALL W.F., RABAN D., REACH W.T., BOT C., OONK J.B.R., YSARD N. and BERNARD J.P.

Abstract (from CDS):

Our goal is to determine and study the global emission from the Magellanic Clouds over the full radio to ultraviolet spectral range. We have selected from the literature those flux densities that include the entire LMC and SMC respectively, and we have complemented these with maps extracted from the WMAP and COBE databases covering the missing 23-90 GHz (13-3.2mm) and the poorly sampled 1.25-250THz (240-1.25µm) spectral ranges in order to reconstruct the global SEDs of the Magellanic Clouds over eight decades in frequency or wavelength. A major result is the discovery of a pronounced excess of emission from the Magellanic Clouds at millimeter and submillimeter wavelengths. We also confirm global mid-infrared (12µm) emission suppression, and determine accurate thermal radio fluxes and very low global extinctions for both LMC and SMC, the latter being the most extreme in all these respects. These and other dust properties such as the far-UV extinction curve appear to be correlated with (low) metallicity. Possible explanations are briefly considered. As long as the nature of the excess emission is unknown, the total dust masses and gas-to-dust ratios of the Magellanic Clouds cannot reliably be determined

Abstract Copyright:

Journal keyword(s): submillimeter: galaxies - radio continuum: galaxies - infrared: galaxies - Magellanic Clouds - galaxies: individual: Magellanic Clouds - dust, extinction

Simbad objects: 39

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Number of rows : 39

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 NGC 253 SyG 00 47 33.134 -25 17 19.68   8.03   6.94 8.1 ~ 2970 2
2 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 9602 1
3 NGC 1140 EmG 02 54 33.5258827369 -10 01 43.135585379 12.41 12.84 12.49 13.6 13.5 ~ 266 1
4 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 5790 1
5 NGC 1569 IG 04 30 49.186 +64 50 52.52 11.72 11.86 11.03     ~ 1160 3
6 V* R Dor AB* 04 36 45.59127 -62 04 37.7974 7.84 6.98 5.40 2.71 -0.44 M8III:e 294 0
7 LHA 120-N 77 EmO 04 50 -69.2           ~ 4 0
8 LHA 120-N 79 HII 04 52 00 -69 22.5           ~ 54 1
9 LHA 120-N 83 HII 04 54 15 -69 10.6           ~ 36 0
10 LHA 120-N 87 HII 04 54 24.679 -69 29 41.51           ~ 15 0
11 LHA 120-N 90 EmO 04 55 25 -69 16.1           ~ 15 0
12 LHA 120-N 94B HII 04 56 33.5 -69 29 04           ~ 18 0
13 LHA 120-N 11 HII 04 56 51.4 -66 24 24           ~ 235 0
14 LHA 120-N 93 HII 04 56 58.4 -69 12 45           ~ 11 0
15 LHA 120-N 44 EmO 05 22 06.9 -67 56 46           ~ 166 1
16 NAME LMC Bar ? 05 22 08 -69 23.5           ~ 265 0
17 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 15051 1
18 NGC 1948 As* 05 24 20.00 -66 24 12.0   10.81 10.61     ~ 100 0
19 LHA 120-N 206A HII 05 31 15.2 -71 03 58           ~ 98 2
20 NGC 2014 As* 05 32 24 -67 41.3   9.17 8.97     ~ 73 0
21 NAME Orion-KL SFR 05 35 14.16 -05 22 21.5           ~ 2031 1
22 NAME Ori Complex Cld 05 35.3 -05 23           ~ 342 0
23 NGC 2030 HII 05 35 33.6 -66 02 26           ~ 69 0
24 RMC 136 Cl* 05 38 42.396 -69 06 03.36           ~ 1757 1
25 LHA 120-N 159 HII 05 39 46.650 -69 45 39.94           ~ 251 2
26 UGCA 116 H2G 05 55 42.645 +03 23 32.23 10.74 11.68 11.46   11.82 ~ 503 0
27 ESO 495-21 bCG 08 36 15.190 -26 24 33.66 12.04 11.93 11.45 11.09 12.3 ~ 510 3
28 M 82 IG 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 5379 6
29 NGC 3310 AGN 10 38 45.857 +53 30 11.89   12.45 12.15     ~ 736 1
30 NGC 3690 IG 11 28 31.326 +58 33 41.80   13.19 12.86     ~ 893 4
31 NGC 4194 AGN 12 14 09.615 +54 31 35.93   13.79 13.30     ~ 414 2
32 NGC 4631 GiP 12 42 08.009 +32 32 29.44   9.78 9.19 9.10   ~ 982 2
33 Mrk 231 Sy1 12 56 14.2340989340 +56 52 25.238555193   14.68 13.84     ~ 1798 3
34 NGC 4945 Sy2 13 05 27.279 -49 28 04.44   9.31 14.40 7.55   ~ 1285 2
35 NAME Centaurus A Sy2 13 25 27.61509104 -43 01 08.8056025   8.18 6.84 6.66   ~ 4039 3
36 NGC 5253 AGN 13 39 55.990 -31 38 24.11 11.48 10.94 10.49 10.33   ~ 1277 4
37 IC 4553 SyG 15 34 57.22396 +23 30 11.6084   14.76 13.88     ~ 2708 4
38 NGC 6240 Sy2 16 52 58.861 +02 24 03.55   14.31 13.37     ~ 1496 2
39 NGC 6946 H2G 20 34 52.332 +60 09 13.24   10.5       ~ 2267 2

    Equat.    Gal    SGal    Ecl

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2020.11.25-10:24:46

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