2007ApJ...654L.143R


Query : 2007ApJ...654L.143R

2007ApJ...654L.143R - Astrophys. J., 654, L143-L146 (2007/January-2)

Compact centimeter and millimeter sources in NGC 6334 I(N): OB stars in the making?

RODRIGUEZ L.F., ZAPATA L.A. and HO P.T.P.

Abstract (from CDS):

We present sensitive, high angular resolution 1.3 cm and 7 mm observations of the massive core NGC 6334 I(N), a region known to be undergoing massive star formation. At 1.3 cm we detect three sources, two of which had previously been detected at centimeter or millimeter wavelengths. At 7 mm we detect four sources. We suggest that three of these sources are subcomponents of the millimeter source SMA 1, which at these wavelengths is the dominant source in the region. The fourth 7 mm source appears to be associated with the relatively isolated source SMA 6. In all four 7 mm sources, the continuum emission is arising from structures of dimensions of order 1000 AU for which we estimate masses of order a few solar masses. We interpret these 7 mm sources as massive circumstellar disks that, however, surround stars or compact small stellar groups that at present have masses comparable to those of the disks but that may be accreting on their way to becoming massive stars.

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Journal keyword(s): ISM: individual (NGC 6334 I(N)) - Stars: Formation

Nomenclature: Tables 1, 2, Fig.3: [HBM2006b] I(N)-SMA1a (Nos SMA1a to SMA1c) added. Table 1: [RZH2007] VLA-KN (No. K1).

CDS comments: Parag. 2 : Calibrator 1720-358 not identified

Simbad objects: 13

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Number of rows : 13
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 192.16-03.82 HII 05 58 13.4 +16 32 00           ~ 145 1
2 3C 286 Sy1 13 31 08.2883506368 +30 30 32.960091564   17.51 17.25     ~ 4558 2
3 NGC 6334 HII 17 20 53 -36 07.9           ~ 740 0
4 [RZH2007] VLA-K1 cm 17 20 52.701 -35 45 13.52           ~ 2 1
5 NAME NGC 6334-I Cl* 17 20 53.35 -35 47 01.5           ~ 373 0
6 NAME NGC 6334 I(N) smm 17 20 54 -35 45.0           ~ 165 1
7 [HBM2006b] I(N)-SMA6 mm 17 20 54.430 -35 45 19.34           ~ 9 1
8 AGAL G351.444+00.659 cor 17 20 54.60 -35 45 12.8           ~ 35 0
9 [HBM2006b] I(N)-SMA1a mm 17 20 55.170 -35 45 05.26           ~ 5 0
10 [HBM2006b] I(N)-SMA1b mm 17 20 55.19 -35 45 03.8           ~ 12 0
11 [HBM2006b] I(N)-SMA1 mm 17 20 55.21 -35 45 04.1           ~ 9 0
12 [HBM2006b] I(N)-SMA1c mm 17 20 55.260 -35 45 02.42           ~ 5 0
13 W 31c HII 18 10 29.1 -19 56 05           ~ 357 0

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