2013ApJ...763...56D

Query : 2013ApJ...763...56D

2013ApJ...763...56D - Astrophys. J., 763, 56 (2013/January-3)

Supergiant shells and molecular cloud formation in the Large Magellanic Cloud.

DAWSON J.R., McCLURE-GRIFFITHS N.M., WONG T., DICKEY J.M., HUGHES A., FUKUI Y. and KAWAMURA A.

Abstract (from CDS):

We investigate the influence of large-scale stellar feedback on the formation of molecular clouds in the Large Magellanic Cloud (LMC). Examining the relationship between H I and 12CO(J = 1-0) in supergiant shells (SGSs), we find that the molecular fraction in the total volume occupied by SGSs is not enhanced with respect to the rest of the LMC disk. However, the majority of objects (∼70% by mass) are more molecular than their local surroundings, implying that the presence of a supergiant shell does on average have a positive effect on the molecular gas fraction. Averaged over the full SGS sample, our results suggest that ∼12%-25% of the molecular mass in supergiant shell systems was formed as a direct result of the stellar feedback that created the shells. This corresponds to ∼4%-11% of the total molecular mass of the galaxy. These figures are an approximate lower limit to the total contribution of stellar feedback to molecular cloud formation in the LMC, and constitute one of the first quantitative measurements of feedback-triggered molecular cloud formation in a galactic system.

Abstract Copyright: ∼

Journal keyword(s): evolution - galaxies: ISM - ISM: bubbles - ISM: molecules - Magellanic Clouds

Nomenclature: Table 1: [DMW2013] NN (Nos 1-11)

Simbad objects: 33

goto Full paper

goto View the references in ADS

Number of rows : 33
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 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7988 0
2 NAME LMC 6 Supergiant Shell HII 04 57 48 -68 40.5           ~ 26 0
3 [KDS99] SGS 2 sh 04 58 30 -68 39.5           ~ 8 0
4 [DMW2013] 1 PoG 04 59 00.0 -65 40 00           ~ 1 0
5 [DMW2013] 6 PoG 04 59 15.0 -68 40 00           ~ 2 0
6 NAME LMC 1 Supergiant Shell sh 04 59 41 -65 44.7           ~ 40 0
7 [DMW2013] 7 PoG 05 01 00.0 -70 27 00           ~ 2 0
8 NAME LMC 8 Supergiant Shell sh 05 02 51 -70 33.3           ~ 34 0
9 [KDS99] SGS 5 sh 05 04 08 -68 31.9           ~ 10 0
10 [KDS99] SGS 6 sh 05 13 58 -65 23.4           ~ 9 0
11 [DMW2013] 10 PoG 05 14 30.0 -65 20 00           ~ 1 0
12 NAME LMC 5 Supergiant Shell sh 05 22 42 -66 05.6           ~ 56 0
13 [KDS99] SGS 8 sh 05 23 05 -68 42.8           ~ 6 0
14 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
15 [DMW2013] 3 PoG 05 28 30.0 -69 17 00           ~ 1 0
16 NAME LMC 3 Supergiant Shell sh 05 30 26 -69 07.9           ~ 73 0
17 [KDS99] SGS 13 sh 05 30 30 -68 48.5           ~ 6 0
18 NAME LMC 4 Supergiant Shell sh 05 31 33 -66 40.5           ~ 183 0
19 [DMW2013] 4 PoG 05 31 45.0 -66 50 00           ~ 2 0
20 [DMW2013] 5 PoG 05 31 45.0 -66 50 00           ~ 2 0
21 [KDS99] SGS 14 sh 05 34 33 -66 20.3           ~ 9 0
22 [KDS99] SGS 15 sh 05 34 44 -68 44.6           ~ 7 0
23 [KDS99] SGS 16 sh 05 36 54 -68 27.8           ~ 6 0
24 [DMW2013] 8 PoG 05 39 00.0 -68 18 00           ~ 1 0
25 [KDS99] SGS 17 sh 05 40 26 -68 19.0           ~ 9 0
26 NAME LMC 2 Supergiant Shell sh 05 41 27 -69 22.4           ~ 200 0
27 [DMW2013] 2 PoG 05 42 45.0 -69 55 00           ~ 1 0
28 [KDS99] SGS 21 sh 05 44 53 -66 28.5           ~ 5 0
29 [DMW2013] 11 PoG 05 45 00.0 -66 30 00           ~ 1 0
30 [KDS99] SGS 22 sh 05 46 16 -68 22.0           ~ 6 0
31 [KDS99] SGS 20 sh 05 46 49 -70 02.5           ~ 7 0
32 [KDS99] SGS 23 sh 05 51 16 -67 37.3           ~ 6 0
33 [DMW2013] 9 PoG 05 51 30.0 -67 37 00           ~ 2 0

To bookmark this query, right click on this link: simbad:objects in 2013ApJ...763...56D and select 'bookmark this link' or equivalent in the popup menu