2007ApJ...659..426D

Query : 2007ApJ...659..426D

2007ApJ...659..426D - Astrophys. J., 659, 426-440 (2007/April-2)

Infrared excess sources in the Canadian Galactic Plane Survey.

DOUGLAS K.A. and TAYLOR A.R.

Abstract (from CDS):

Using data sets from the Canadian Galactic Plane Survey, we have conducted a multiwavelength study of interstellar components, covering the region 102.5°<l<141.5° and -3.03°<b<5.41°. By comparing column density tracers of dust, atomic hydrogen, and molecular gas (traced by CO emission), we have found regions where the dust optical depth shows evidence of more gas than is predicted by the H I and CO observations. Within this population of infrared excess sources, it is possible to discriminate between sources associated with low and high dust temperatures. We interpret the colder temperature sources as molecular clouds/clumps not traced by the CO J=1-0 transition. Possible reasons include the depletion of CO onto dust grains in the coldest, densest regions of molecular clouds, or photodissociation of CO on the outskirts of molecular clouds.

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Journal keyword(s): ISM: Dust, Extinction

Nomenclature: Table 2: IRXS GLLL.l+B.b N=16.

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 - 2026 		#notes
1 HD 225160 s*b 00 04 03.7944653736 +62 13 19.009200864 7.74 8.46 8.19     O8Iabf 123 0
2 IRXS G119.2-1.8 IR 00 20.7 +60 51           ~ 1 0
3 BD+60 39 * 00 21 53.8989746616 +61 45 02.610093816 9 9.66 9.46     O9V 45 0
4 IRXS G120.1+4.0 IR 00 22.8 +66 43           ~ 1 0
5 IRXS G120.9+3.1 IR 00 31.5 +65 54           ~ 1 0
6 LDN 1291 DNe 00 42.2 +62 01           ~ 7 0
7 LDN 1294 DNe 00 42.3 +62 16           ~ 4 0
8 IRXS G121.9-1.1 IR 00 42.7 +61 45           ~ 1 0
9 LDN 1298 DNe 00 43.4 +61 06           ~ 5 0
10 LDN 1300 DNe 00 43.9 +61 26           ~ 5 0
11 LDN 1302 DNe 00 43.9 +61 51           ~ 11 0
12 LDN 1301 DNe 00 44 06 +62 30.0           ~ 9 0
13 LDN 1305 DNe 01 03.3 +67 46           ~ 5 0
14 IRXS G124.2+2.6 IR 01 03.6 +65 26           ~ 1 0
15 LDN 1307 DNe 01 05.2 +65 16           ~ 11 0
16 IRXS G125.3+4.2 IR 01 15.6 +66 58           ~ 1 0
17 IRXS G128.7+4.1 IR 01 49.3 +66 19           ~ 1 0
18 LDN 1335 DNe 01 51.7 +66 05           ~ 8 0
19 LDN 1333 DNe 02 26 04 +75 28.5           ~ 60 0
20 W 3 MoC 02 27 04.10 +61 52 27.1           ~ 1064 3
21 IRXS G135.0-0.6 IR 02 30.1 +59 56           ~ 1 0
22 NAME Heart Nebula HII 02 32.7 +61 27           ~ 336 1
23 LBN 140.77-01.42 HII 03 07 +56.7           ~ 13 0
24 IRXS G141.1-0.0 IR 03 14.4 +57 44           ~ 1 0
25 LBN 140.07+01.64 HII 03 18.9 +59 38           ~ 36 0
26 IRXS G140.3+3.0 IR 03 21.6 +60 42           ~ 1 0
27 LDN 1174 DNe 21 00 22.4 +68 12 53           ~ 66 0
28 LDN 1292 DNe 21 40.5 +88 34           ~ 4 0
29 LBN 104.68+04.24 HII 22 10 +61.2           ~ 2 0
30 IRXS G104.7+3.4 IR 22 13.6 +60 34           ~ 1 0
31 LDN 1247 DNe 22 21.9 +75 06           ~ 18 0
32 IRXS G105.7+1.6 IR 22 28.2 +59 35           ~ 1 0
33 LDN 1240 DNe 23 11.0 +66 26           ~ 5 0
34 NAME Cas A SNR 23 23 26.0 +58 48 41     14.30     ~ 3033 1
35 IRXS G114.4+3.6 IR 23 29.1 +65 06           ~ 1 0
36 IRXS G113.6+0.5 IR 23 30.9 +61 54           ~ 1 0
37 IRXS G113.4-1.5 IR 23 34.3 +59 56           ~ 1 0
38 IRXS G116.1+5.2 IR 23 40.5 +67 08           ~ 1 0
39 LDN 1266 DNe 23 57.5 +67 17           ~ 6 0

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