2005A&A...433..565D


C.D.S. - SIMBAD4 rel 1.7 - 2021.06.20CEST05:57:56

2005A&A...433..565D - Astronomy and Astrophysics, volume 433, 565-577 (2005/4-2)

Triggered massive-star formation on the borders of Galactic HII regions. I. A search for ``collect and collapse'' candidates.

DEHARVENG L., ZAVAGNO A. and CAPLAN J.

Abstract (from CDS):

Young massive stars or clusters are often observed at the peripheries of HII regions. What triggers star formation at such locations? Among the scenarios that have been proposed, the ``collect and collapse'' process is particularly attractive because it permits the formation of massive objects via the fragmentation of the dense shocked layer of neutral gas surrounding the expanding ionized zone. However, until our recent article on Sh 104, it had not been convincingly demonstrated that this process actually takes place. In the present paper we present our selection of seventeen candidate regions for this process; all show high-luminosity near-IR clusters and/or mid-IR point sources at their peripheries. The reality of a ``collect and collapse'' origin of these presumably second-generation stars and clusters will be discussed in forthcoming papers, using new near-IR and millimetre observations.

Abstract Copyright:

Journal keyword(s): stars: formation - stars: early-type - ISM: HII regions

Nomenclature: Table 1: [DZC2005] A (Nos X, Y, Z).

CDS comments: A C Fig.18: "the numbers of the sources in their Fig. 18 are reversed by mistake." (cf 2009A&A...494..987P)

Simbad objects: 50

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Number of rows : 50

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 MSX6C G124.0361+00.0613 MIR 01 01 07.711 +62 54 43.05           ~ 1 0
2 IRAS 00580+6238 HII 01 01 09.52 +62 54 08.2           ~ 6 0
3 IRAS 04366+5022 Y*O 04 40 27.2402659298 +50 28 29.317454228           ~ 25 3
4 SH 2-212 HII 04 40 36.50 +50 27 44.3           ~ 93 2
5 MSX6C G159.3509+02.5691 MIR 04 56 03.3901701126 +47 22 56.223739346           ~ 1 0
6 IRAS 04523+4718 IR 04 56 03.9 +47 22 59           ~ 8 0
7 LBN 159.33+02.55 HII 04 56 05.5 +47 22 33           ~ 68 0
8 RAFGL 5133 IR 04 58 29.7 +47 58 28           ~ 19 0
9 LBN 159.17+03.33 HII 04 58 45.70 +47 59 36.0           ~ 79 2
10 MSX6C G173.1588-01.3052 * 05 23 03.5796509442 +33 58 25.655604704           ~ 1 0
11 IRAS 05197+3355 HII 05 23 07 +33 58.3           ~ 22 1
12 IRAS 06006+3015 IR 06 03 54.1 +30 14 55           ~ 16 0
13 SH 2-241 HII 06 04.1 +30 15           ~ 55 1
14 Ass Gem OB 1 As* 06 09.8 +21 35           ~ 173 0
15 MSX6C G192.9089-00.6259 Y*O 06 11 23.7 +17 26 29           ~ 3 0
16 IRAS 06084+1727 HII 06 11 24.5 +17 26 26           ~ 15 0
17 SH 2-259 HII 06 11 25.80 +17 26 25.0           ~ 32 1
18 DCld 264.3+01.5 DNe 08 54 42 -42 54.8           ~ 68 0
19 MSX6C G264.2918+01.4700 MIR 08 56 27.7 -43 05 47           ~ 4 0
20 RCW 34 HII 08 56 28.1 -43 05 58   10.5 11.21     ~ 92 0
21 V* V391 Vel Or* 08 56 28.109952 -43 05 55.40028 12.61 12.71 11.73 11.50   O8/8.5V 81 1
22 MSX6C G269.1866-01.4766 MIR 09 02 06.775 -48 43 26.74           ~ 1 0
23 GUM 25 HII 09 02 21.3 -48 41 55           ~ 27 0
24 IRAS 09007-4827 MIR 09 02 27.54096 -48 38 52.6956           ~ 3 1
25 MSX6C G269.1729-01.3856 MIR 09 02 28.5 -48 39 14           ~ 1 0
26 [DBS2003] 45 Cl* 10 19 11 -58 02.3           ~ 8 1
27 GAL 284.0-00.8 Mas 10 20 14.9 -58 03 39           ~ 14 0
28 MSX6C G284.0155-00.8579 MIR 10 20 15.7 -58 03 57           ~ 2 0
29 [DBS2003] 46 Cl* 10 29 30 -57 26.5           ~ 5 1
30 IRAS 10276-5711 HII 10 29 30.4 -57 26 41           ~ 8 0
31 MSX6C G284.7336+00.3265 MIR 10 29 32.4 -57 26 36           ~ 1 0
32 HD 311999 * 12 50 22.6136011684 -61 35 00.794322286 11.14 11.40 10.77 10.76   OB 39 0
33 IRAS 12474-6119 IR 12 50 24.7 -61 35 31           ~ 1 0
34 MSX6C G302.8104+01.2788 MIR 12 50 25.0 -61 35 34           ~ 1 0
35 GRS G308.60 +00.60 HII 13 39.9 -61 45           ~ 96 0
36 MSX6C G308.7452+00.5482 MIR 13 40 53.1 -61 45 51           ~ 2 0
37 IRAS 13374-6130 HII 13 40 53.2 -61 45 47           ~ 8 0
38 IRAS 13555-6107 * 13 59 03.6119805124 -61 22 16.212748336           ~ 2 0
39 RCW 82 HII 13 59.3 -61 27           ~ 30 0
40 IRAS 13563-6109 HII 13 59 55.4 -61 24 25           ~ 3 0
41 2MASS J13595761-6124368 * 13 59 57.61 -61 24 36.9           ~ 3 0
42 SH 2-3 HII 17 12.4 -38 28           ~ 174 1
43 MSX6C G348.2940+00.4334 MIR 17 12 40.9 -38 27 08           ~ 2 0
44 IRAS 17092-3823 IR 17 12 41.7 -38 27 01           ~ 1 0
45 IRAS 20160+3636 HII 20 17 56.1 +36 45 33           ~ 19 0
46 MSX6C G074.7913+00.5795 MIR 20 17 57.0837724488 +36 45 37.684346156           ~ 2 0
47 LBN 077.61+01.59 HII 20 20 39.3 +39 37 52           ~ 74 0
48 MSX6C G077.4383+01.7166 NIR 20 20 46.0788389752 +39 35 14.727492081           ~ 1 0
49 MSX5C G077.4387+01.7170 HII 20 20 48.05 +39 34 43.3           ~ 3 0
50 SH 2-104 HII 20 24 37 +38 31.9           ~ 95 0

    Equat.    Gal    SGal    Ecl

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2021.06.20-05:57:56

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