2007AJ....134..906G

Query : 2007AJ....134..906G

2007AJ....134..906G - Astron. J., 134, 906-911 (2007/September-0)

Very large array observations of candidate high-mass protostellar objects at 7 millimeters.

GARAY G., RODRIGUEZ L.F. and DE GREGORIO-MONSALVO I.

Abstract (from CDS):

We present radio-continuum observations at 7 mm made using the Very Large Array toward three massive star-forming regions thought to be in very early stages of evolution, selected from the 2002 sample of Sridharan et al. Emission was detected toward all three sources (IRAS 18470-0044, IRAS 19217+1651, and IRAS 23151+5912). We find that in all cases the 7 mm emission corresponds to thermal emission from ionized gas. The regions of ionized gas associated with IRAS 19217+1651 and IRAS 23151+5912 are hypercompact, with diameters of 0.009 and 0.0006 pc and emission measures of 7.0x108 and 2.3x109 pc/cm6, respectively.

Abstract Copyright: ∼

Journal keyword(s): ISM: H II Regions - Stars: Early-Type - Stars: Formation

Nomenclature: Tables 2, 3, Figs 1, 2: [GRD2007] HHMMm+DDMMA N=5.

CDS comments: Calibrator J1851+005 not identified (could be VCS2 J1851+0035?)

Simbad objects: 15

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Number of rows : 15
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 GAL 174.20-00.08 Cld 05 30 45.9 +33 47 56           ~ 210 2
2 NAME Orion-KL SFR 05 35 14.16 -05 22 21.5           ~ 2421 1
3 GAL 192.16-03.82 HII 05 58 13.4 +16 32 00           ~ 145 1
4 IRAS 16547-4247 Y*O 16 58 17.208 -42 52 08.16           ~ 187 0
5 NAME HH 80-81 IRS HII 18 19 11.8 -20 47 35           ~ 157 0
6 [GRD2007] 18470-0044B Rad 18 49 35.94 -00 41 05.9           B0.5 1 0
7 [GRD2007] 18470-0044A Rad 18 49 37.78 -00 41 01.8           B0.5 1 0
8 BGPSv2 G032.119+00.092 cor 18 49 37.81 -00 41 01.1           ~ 33 0
9 [GRD2007] 19217+1651A Rad 19 23 58.82 +16 57 41.2           O9.5 2 0
10 AGAL G051.678+00.719 cor 19 23 59 +16 57.7           ~ 48 0
11 [GRD2007] 19217+1651B Rad 19 23 58.85 +16 57 42.3           B0 2 0
12 IRAS 20126+4104 Y*O 20 14 25.8816769656 +41 13 36.879427236           B2.5-B0.5 469 0
13 NAME Cep A HW 2 Y*O 22 56 17.9 +62 01 49           B0.5 243 0
14 [GRD2007] 23151+5912 Rad 23 17 20.90 +59 28 47.8           B0.5 1 0
15 IRAS 23151+5912 HII 23 17 21.0 +59 28 49           ~ 102 0

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