2013ApJS..206...22C


C.D.S. - SIMBAD4 rel 1.7 - 2020.02.20CET02:13:33

2013ApJS..206...22C - Astrophys. J., Suppl. Ser., 206, 22 (2013/June-0)

Newly identified extended green objects (EGOs) from the Spitzer GLIMPSE II survey. II. Molecular cloud environments.

CHEN X., GAN C.-G., ELLINGSEN S.P., HE J.-H., SHEN Z.-Q. and TITMARSH A.

Abstract (from CDS):

We have undertaken a survey of molecular lines in the 3 mm band toward 57 young stellar objects using the Australia Telescope National Facility Mopra 22 m radio telescope. The target sources were young stellar objects with active outflows (extended green objects (EGOs)) newly identified from the GLIMPSE II survey. We observe a high detection rate (50%) of broad line wing emission in the HNC and CS thermal lines, which combined with the high detection rate of class I methanol masers toward these sources (reported in Paper I) further demonstrates that the GLIMPSE II EGOs are associated with outflows. The physical and kinematic characteristics derived from the 3 mm molecular lines for these newly identified EGOs are consistent with these sources being massive young stellar objects with ongoing outflow activity and rapid accretion. These findings support our previous investigations of the mid-infrared properties of these sources and their association with other star formation tracers (e.g., infrared dark clouds, methanol masers and millimeter dust sources) presented in Paper I. The high detection rate (64%) of the hot core tracer CH3 CN reveals that the majority of these new EGOs have evolved to the hot molecular core stage. Comparison of the observed molecular column densities with predictions from hot core chemistry models reveals that the newly identified EGOs from the GLIMPSE II survey are members of the youngest hot core population, with an evolutionary time scale of the order of 103 yr.

Abstract Copyright:

Journal keyword(s): infrared: ISM - ISM: jets and outflows - radio lines: ISM - stars: formation

VizieR on-line data: <Available at CDS (J/ApJS/206/22): table1.dat table4.dat table5.dat table6.dat table7.dat table8.dat table9.dat table10.dat table11.dat table12.dat table15.dat>

Simbad objects: 74

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Number of rows : 74

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 NGC 1333 SFR 03 28 55 +31 22.2   10.9       ~ 1200 1
2 [JCC87] IRAS 2A Y*O 03 28 55.55 +31 14 36.7           ~ 380 3
3 [JCC87] IRAS 4B Y*O 03 29 12.058 +31 13 02.05           ~ 548 0
4 GAL 174.20-00.08 Cld 05 30 45.9 +33 47 56           ~ 182 2
5 NAME OMC-1 MoC 05 35 14 -05 22.4           ~ 1001 2
6 NAME Orion-KL SFR 05 35 14.16 -05 22 21.5           ~ 1968 1
7 GAL 305.20+00.2 HII 13 11 35.1 -62 33 26           ~ 35 0
8 NAME Lup Cloud SFR 16 03 -38.1           ~ 494 0
9 IRAS 16293-2422 cor 16 32 22.56 -24 28 31.8           ~ 1013 1
10 LDN 1689B DNe 16 34 42.1 -24 36 11           ~ 132 0
11 EGO G349.80+0.10 out 17 18 27.8 -37 25 02           ~ 2 0
12 EGO G349.62-0.20 out 17 19 13.6 -37 44 28           ~ 3 0
13 EGO G350.33+0.10 out 17 20 02.0 -36 59 13           ~ 3 0
14 NAME NGC 6334-I Cl* 17 20 53.35 -35 47 01.5           ~ 262 0
15 EGO G350.41-0.07 out 17 20 56.4 -37 00 48           ~ 3 0
16 SSTGLMC G351.5266+00.7033 Y*O 17 20 57.758 -35 39 37.44           ~ 6 0
17 EGO G350.52-0.35(b) out 17 22 25.3 -37 05 13           ~ 2 0
18 EGO G350.52-0.35(a) out 17 22 26.2 -37 05 05           ~ 3 0
19 EGO G349.64-1.09 out 17 23 01.2 -38 13 52           ~ 3 0
20 EGO G350.69-0.49 out 17 23 28.6 -37 01 48           ~ 6 0
21 EGO G352.52+0.76 out 17 23 29.8 -34 48 20           ~ 3 0
22 EGO G350.96-0.37 out 17 23 44.7 -36 44 11           ~ 2 0
23 EGO G350.54-0.75 out 17 24 07.4 -37 17 52           ~ 2 0
24 EGO G351.38-0.18 out 17 24 09.6 -36 16 49           ~ 3 0
25 SSTGLMC G352.0272+00.0705 out 17 24 55.5 -35 36 21           ~ 3 0
26 GAL 351.58-00.35 HII 17 25 25.2 -36 12 46           ~ 17 0
27 EGO G351.58-0.35 out 17 25 25.3 -36 12 44           ~ 2 0
28 EGO G351.02-0.86 out 17 25 55.6 -36 57 38           ~ 3 0
29 EGO G352.87+0.29 out 17 26 21.7 -34 47 04           ~ 2 0
30 SSTGLMC G351.8030-00.4491 out 17 26 25.8 -36 04 57           ~ 4 0
31 EGO G351.78-0.52 out 17 26 38.8 -36 08 06           ~ 2 0
32 EGO G353.46+0.56 out 17 26 51.5 -34 08 26           ~ 3 0
33 EGO G352.60-0.19 out 17 27 32.7 -35 16 48           ~ 3 0
34 EGO G352.61-0.23 out 17 27 42.9 -35 17 29           ~ 3 0
35 EGO G352.32-0.44 out 17 27 48.6 -35 39 13           ~ 3 0
36 EGO G352.13-0.94 out 17 29 22.2 -36 05 02           ~ 3 0
37 EGO G352.63-1.07 out 17 31 13.8 -35 44 09           ~ 3 0
38 EGO G355.41+0.10 out 17 33 51.0 -32 45 59           ~ 3 0
39 EGO G356.37+0.57 out 17 34 27.3 -31 42 38           ~ 3 0
40 EGO G355.54-0.10 out 17 34 59.6 -32 46 24           ~ 3 0
41 EGO G355.18-0.42 out 17 35 20.4 -33 14 28           ~ 3 0
42 EGO G356.66-0.26 out 17 38 29.7 -31 54 38           ~ 2 0
43 EGO G355.75-0.87 out 17 38 38.0 -33 00 25           ~ 3 0
44 EGO G357.52+0.20 out 17 38 49.5 -30 56 16           ~ 3 0
45 EGO G358.46-0.39(b) out 17 43 26.8 -30 27 11           ~ 3 0
46 EGO G358.46-0.39(a) out 17 43 27.3 -30 27 17           ~ 2 0
47 EGO G358.37-0.47 out 17 43 32.0 -30 34 11           ~ 2 0
48 EGO G358.39-0.48 out 17 43 37.7 -30 33 50           ~ 3 0
49 IRAS 17403-3032 HII 17 43 38.5026 -30 33 42.187           ~ 15 0
50 EGO G359.94+0.17 out 17 44 48.6 -28 53 58           ~ 3 0
51 EGO G358.84-0.74 out 17 45 44.4 -30 18 34           ~ 3 0
52 NAME Sgr B2 MoC 17 47 20.4 -28 23 07           ~ 1879 1
53 EGO G000.09-0.66 out 17 48 25.8 -29 12 05           ~ 3 0
54 EGO G002.54+0.20 out 17 50 47.1 -26 39 35           ~ 3 0
55 EGO G003.44-0.35 out 17 54 56.1 -26 09 37           ~ 2 0
56 EGO G004.83+0.23 out 17 55 49.0 -24 40 19           ~ 3 0
57 EGO G004.78+0.04 out 17 56 25.5 -24 48 23           ~ 2 0
58 EGO G004.89-0.13 out 17 57 19.8 -24 47 38           ~ 2 0
59 EGO G005.62-0.08 out 17 58 44.5 -24 08 35           ~ 4 0
60 EGO G004.63-0.67 out 17 58 47.5 -25 17 42           ~ 3 0
61 EGO G006.19-0.36 out 18 01 02.1 -23 47 11           ~ 3 0
62 EGO G006.22-0.61 out 18 02 02.9 -23 53 13           ~ 2 0
63 EGO G008.27+0.51 out 18 02 13.8 -21 32 34           ~ 2 0
64 EGO G007.63-0.11 out 18 03 11.6 -22 24 32           ~ 2 0
65 EGO G007.99-0.27 out 18 04 33.8 -22 10 21           ~ 2 0
66 EGO G008.83-0.03 out 18 05 25.6 -21 19 25           ~ 2 0
67 GAL 009.62+00.19 HII 18 06 13.9 -20 31 44           ~ 185 0
68 MSX5C G008.6623-00.3736 out 18 06 22.184 -21 38 26.37           ~ 5 0
69 SSTGLMC G008.7035-00.3682 out 18 06 26.1 -21 36 06           ~ 4 0
70 EGO G008.72-0.36 out 18 06 26.6 -21 35 18           ~ 3 0
71 EGO G009.81-1.06 out 18 11 19.1 -20 57 56           ~ 3 0
72 EGO G009.83-1.05 out 18 11 19.6 -20 56 29           ~ 3 0
73 OH 34.26 +0.15 SFR 18 53 18.54 +01 14 57.9           ~ 456 0
74 NAME Cyg X FIR 33 Y*O 20 38 35.9 +42 37 22           B1.5 359 1

    Equat.    Gal    SGal    Ecl

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2020.02.20-02:13:33

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