2012ApJ...752..102C


C.D.S. - SIMBAD4 rel 1.7 - 2019.12.11CET15:53:52

2012ApJ...752..102C - Astrophys. J., 752, 102 (2012/June-3)

H II regions, embedded protostars, and starless cores in Sharpless 2-157.

CHEN C.-C., WILLIAMS J.P. and PANDIAN J.D.

Abstract (from CDS):

We present arcsecond resolution 1.4 mm observations of the high-mass star-forming region, Sharpless 2-157, that reveal the cool dust associated with the first stages of star formation. These data are compared with archival images at optical, infrared, and radio wavelengths, and complemented with new arcsecond resolution mid-infrared data. We identify a dusty young H II region, numerous infrared sources within the cluster envelope, and four starless condensations. Three of the cores lie in a line to the south of the cluster peak, but the most massive one is right at the center and associated with a jumble of bright radio and infrared sources. This presents an interesting juxtaposition of high- and low-mass star formation within the same cluster which we compare with similar observations of other high-mass star-forming regions and discuss in the context of cluster formation theory.

Abstract Copyright:

Journal keyword(s): circumstellar matter - ISM: structure - stars: formation - stars: pre-main sequence

Nomenclature: Table 2: [CWP2012] Sh2-157B-MMN (Nos MM1-MM6), Table 3: [CWP2012] Sh2-157B-IRN (Nos IRS1-IRS2)

Simbad objects: 19

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Number of rows : 19

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 RAFGL 961 Y*O 06 34 37.741 +04 12 44.20           ~ 233 1
2 NAME ROSETTE MOL CLOUD MoC 06 34.7 +04 02           ~ 224 0
3 3C 273 BLL 12 29 06.6996828061 +02 03 08.598846466   13.05 14.830 14.11   ~ 5252 1
4 3C 279 QSO 12 56 11.1664521013 -05 47 21.531840471   18.01 17.75 15.87   ~ 2643 2
5 IRAS 20293+3952 HII 20 31 11.040 +40 03 10.69           ~ 66 0
6 * bet Peg LP* 23 03 46.45746 +28 04 58.0336 6.05 4.09 2.42 0.92 -0.40 M2.5II-III 575 0
7 WISE J231604.17+600200.3 Y*O 23 16 03.882 +60 02 01.45           ~ 3 1
8 [CWP2012] Sh2-157B-MM1 mm 23 16 03.93 +60 01 56.0           ~ 1 0
9 [CWP2012] Sh2-157B-MM2 mm 23 16 03.96 +60 02 01.0           ~ 1 0
10 SH 2-157 B HII 23 16 04 +60 02.1           ~ 10 0
11 [THW2006] G111.28-00.66 a smm 23 16 04.1 +60 01 55           ~ 2 0
12 [CWP2012] Sh2-157B-MM3 mm 23 16 04.36 +60 01 34.0           ~ 1 0
13 [THW2006] G111.28-00.66 b smm 23 16 04.4 +60 01 38           ~ 2 0
14 [CWP2012] Sh2-157B-MM4 mm 23 16 04.43 +60 01 35.8           ~ 1 0
15 [CWP2012] Sh2-157B-MM5 mm 23 16 04.53 +60 01 42.0           ~ 1 0
16 [CWP2012] Sh2-157B-MM6 mm 23 16 05.76 +60 02 05.5           ~ 1 0
17 SH 2-157 A HII 23 16.1 +60 02           ~ 9 0
18 LBN 111.14-00.72 HII 23 16 07 +60 02.5           ~ 91 1
19 NAME Gould Belt PoG ~ ~           ~ 690 1

    Equat.    Gal    SGal    Ecl

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2019.12.11-15:53:52

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