2014MNRAS.440..427R

Query : 2014MNRAS.440..427R

2014MNRAS.440..427R - Mon. Not. R. Astron. Soc., 440, 427-447 (2014/May-1)

A Herschel and BIMA study of the sequential star formation near the W 48A HII region.

RYGL K.L.J., GOEDHART S., POLYCHRONI D., WYROWSKI F., MOTTE F., ELIA D., NGUYEN-LUONG Q., DIDELON P., PESTALOZZI M., BENEDETTINI M., MOLINARI S., ANDRE Ph., FALLSCHEER C., GIBB A., DI GIORGIO A.M., HILL T., KONYVES V., MARSTON A., PEZZUTO S., RIVERA-INGRAHAM A., SCHISANO E., SCHNEIDER N., SPINOGLIO L., WARD-THOMPSON D. and WHITE G.J.

Abstract (from CDS):

We present the results of Herschel HOBYS (Herschel imaging survey of OB Young Stellar objects) photometric mapping combined with Berkeley Illinois Maryland Association (BIMA) observations and additional archival data, and perform an in-depth study of the evolutionary phases of the star-forming clumps in W 48A and their surroundings. Age estimates for the compact sources were derived from bolometric luminosities and envelope masses, which were obtained from the dust continuum emission, and agree within an order of magnitude with age estimates from molecular line and radio data. The clumps in W 48A are linearly aligned by age (east-old to west-young): we find a ultra-compact (UC) Hii region, a young stellar object (YSO) with class II methanol maser emission, a YSO with a massive outflow and finally the NH2D prestellar cores from Pillai et al. This remarkable positioning reflects the (star) formation history of the region. We find that it is unlikely that the star formation in the W 48A molecular cloud was triggered by the UC Hii region and discuss the Aquila supershell expansion as a major influence on the evolution of W 48A. We conclude that the combination of Herschel continuum data with interferometric molecular line and radio continuum data is important to derive trustworthy age estimates and interpret the origin of large-scale structures through kinematic information.

Abstract Copyright: © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2014)

Journal keyword(s): stars: formation - ISM: clouds - dust, extinction - Hii regions - ISM: individual objects: W 48A - ISM: molecules

Nomenclature: Figs 2-3, Tables 2-3: [RGP2014] Clump H-N (Nos 1-3), [RGP2014] Core H-Na (Nos 2a-2b, 3a-3b).

CDS comments: The star forming region G35.80-1.38 in Figure A1 is not in Simbad.

Simbad objects: 26

goto Full paper

goto View the references in ADS

Number of rows : 26
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 W 3 OH HII 02 27 04.1 +61 52 22           ~ 1064 2
2 W 3 MoC 02 27 04.10 +61 52 27.1           ~ 1064 3
3 GAL 174.20-00.08 Cld 05 30 45.9 +33 47 56           ~ 210 2
4 SH 2-3 HII 17 12.4 -38 28           ~ 234 1
5 4C 09.57 BLL 17 51 32.81857326 +09 39 00.7284066   17.46 16.78 15.57   ~ 1007 1
6 RAFGL 2271 SFR 18 53 18.54 +01 14 57.9           ~ 537 0
7 HEC G034.71-00.63 DNe 18 56 55.6 +01 17 44           ~ 2 0
8 GAL 035.2-00.74 cor 18 58 13.00 +01 40 36.0           ~ 176 0
9 IRAS 18556+0136 mul 18 58 13.1 +01 40 35           ~ 142 0
10 W 48e HII 19 00 47.5 +01 12 47           ~ 3 0
11 IRAS 18586+0106 Rad 19 01 10.6 +01 11 16           ~ 19 0
12 SNR G035.2-01.8 SNR 19 01.6 +01 14           ~ 158 0
13 [PKW2011] G35.20w mm1 cor 19 01 42.38 +01 13 32.4           ~ 2 0
14 [RGP2014] Clump H-3 IR 19 01 42.4 +01 13 33           ~ 1 0
15 NAME W 48 West Core smm 19 01 42.5 +01 13 33           ~ 9 0
16 [RGP2014] Core H-3a cor 19 01 42.65 +01 13 37.5           ~ 1 0
17 [RGP2014] Core H-2a cor 19 01 45.50 +01 13 33.0           ~ 2 0
18 [RGP2014] Clump H-2 IR 19 01 45.7 +01 13 33           ~ 2 0
19 [WC89] 035.20-1.74 HII 19 01 46.4 +01 13 25           ~ 12 0
20 [RGP2014] Clump H-1 IR 19 01 46.6 +01 13 25           ~ 1 0
21 GAL 035.19-01.75 HII 19 01 47.4 +01 13 00           ~ 24 0
22 W 48b HII 19 01 53.6 +01 15 33           ~ 4 0
23 NVSS J190215+012223 HII 19 02 15.274 +01 22 26.02           ~ 5 1
24 W 48d HII 19 02 20.6 +01 19 09           ~ 3 0
25 NAME Aquila Supershell HI 19 15 -02.0           ~ 17 0
26 NGC 7538 OpC 23 13 37 +61 30.0           ~ 920 1

To bookmark this query, right click on this link: simbad:objects in 2014MNRAS.440..427R and select 'bookmark this link' or equivalent in the popup menu