2018ApJ...852...93V

Query : 2018ApJ...852...93V

2018ApJ...852...93V - Astrophys. J., 852, 93-93 (2018/January-2)

Probing the massive star-forming environment: a multiwavelength investigation of the filamentary IRDC G333.73+0.37.

VEENA V.S., VIG S., MOOKERJEA B., SANCHEZ-MONGE A., TEJ A. and ISHWARA-CHANDRA C.H.

Abstract (from CDS):

We present a multiwavelength study of the filamentary infrared dark cloud (IRDC) G333.73+0.37. The region contains two distinct mid-infrared sources S1 and S2 connected by dark lanes of gas and dust. Cold dust emission from the IRDC is detected at seven wavelength bands, and we have identified 10 high-density clumps in the region. The physical properties of the clumps such as temperature (14.3-22.3 K) and mass (87-1530 M☉) are determined by fitting a modified blackbody to the spectral energy distribution of each clump between 160 µm and 1.2 mm. The total mass of the IRDC is estimated to be ∼4700 M☉. The molecular line emission toward S1 reveals signatures of protostellar activity. Low-frequency radio emission at 1300 and 610 MHz is detected toward S1 (shell-like) and S2 (compact morphology), confirming the presence of newly formed massive stars in the IRDC. Photometric analysis of near- and mid-infrared point sources unveils the young stellar object population associated with the cloud. Fragmentation analysis indicates that the filament is supercritical. We observe a velocity gradient along the filament, which is likely to be associated with accretion flows within the filament rather than rotation. Based on various age estimates obtained for objects in different evolutionary stages, we attempt to set a limit to the current age of this cloud.

Abstract Copyright: © 2018. The American Astronomical Society. All rights reserved.

Journal keyword(s): H ii regions - infrared: ISM - infrared: stars - ISM: individual objects: G333.73+0.37 - radio continuum: ISM - stars: formation - stars: formation

Nomenclature: Fig. 4, Table 2: [VVM2018] CNN (Nos C1-C10).

CDS comments: Source S1 is [SPK2012] MWP1G333726+003642. Source S2 is [BBC2006] IRAS 16164-4929 Clump 2. Sources P1 and P2 are not in SIMBAD. Sources in Table 5 are all from 2MASS (acronym 2MASS JHHMMSSss+DDMMSSs), while those in Table 6 are all from GLIMPSE (acronyms SSTGLMC or SSTGLMA GLLL.llll+BB.bbbb); the nick names given by the authors as "NIRNN" and "MIRNN" will thus not be added in Simbad.

Simbad objects: 77

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Number of rows : 77
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 3C 286 Sy1 13 31 08.2883506368 +30 30 32.960091564   17.51 17.25     ~ 4558 2
2 NAME Car-Sgr Arm PoG 15 00 -40.0           ~ 581 1
3 2MASS J16194842-4938133 NIR 16 19 48.42072 -49 38 13.3944           ~ 1 0
4 2MASS J16194869-4937026 * 16 19 48.6859896216 -49 37 02.483144256           ~ 1 0
5 2MASS J16195023-4937287 * 16 19 50.2518008832 -49 37 28.676672220           ~ 1 0
6 IRAS 16161-4931 Y*O 16 19 50.89320 -49 38 21.3648           ~ 2 0
7 SSTGLMC G333.6714+00.3825 Y*O 16 19 51.09024 -49 37 49.8792           ~ 2 0
8 2MASS J16195142-4937166 * 16 19 51.4407121800 -49 37 16.652909136           ~ 1 0
9 [VVM2018] C6 MoC 16 19 51.925 -49 37 36.01           ~ 1 0
10 2MASS J16195232-4937562 Y*O 16 19 52.32528 -49 37 56.2008           ~ 1 0
11 SSTGLMC G333.6773+00.3816 Y*O 16 19 52.87920 -49 37 36.9984           ~ 1 0
12 SPICY 35612 Y*O 16 19 53.03664 -49 37 34.5900           ~ 2 0
13 SSTGLMC G333.6805+00.3763 Y*O 16 19 55.08408 -49 37 42.5496           ~ 1 0
14 2MASS J16195805-4937048 Y*O 16 19 58.05840 -49 37 04.8144           ~ 2 0
15 [VVM2018] C7 MoC 16 19 58.196 -49 37 41.13           ~ 1 0
16 2MASS J16195830-4937472 Y*O 16 19 58.3019685264 -49 37 47.243747748           ~ 3 0
17 2MASS J16200025-4936275 * 16 20 00.2593039320 -49 36 27.573116976           ~ 1 0
18 [VVM2018] C5 MoC 16 20 00.287 -49 37 25.91           ~ 1 0
19 2MASS J16200057-4936070 Y*O 16 20 00.5508336504 -49 36 06.237684432           ~ 2 0
20 SSTGLMC G333.6968+00.3713 Y*O 16 20 00.70008 -49 37 14.3148           ~ 2 0
21 2MASS J16200181-4936470 * 16 20 01.8092713920 -49 36 46.776128652           ~ 1 0
22 SSTGLMC G333.6963+00.3664 Y*O 16 20 01.84824 -49 37 28.1172           ~ 2 0
23 2MASS J16200184-4936200 * 16 20 01.8676477680 -49 36 19.782944496           ~ 1 0
24 2MASS J16200267-4936306 Y*O 16 20 02.6628414552 -49 36 30.551304816       16.46   ~ 1 0
25 UCAC4 203-123509 * 16 20 03.2022756552 -49 35 22.610686308   13.65 12.98 12.86   ~ 1 0
26 2MASS J16200353-4936469 Y*O 16 20 03.5235243024 -49 36 46.946166228           ~ 2 0
27 2MASS J16200353-4936012 * 16 20 03.5350824955 -49 36 01.309679475           ~ 1 0
28 UCAC4 202-121072 * 16 20 03.7296276360 -49 36 24.713808048       15.91   ~ 1 0
29 UCAC4 202-121076 * 16 20 04.0856033424 -49 36 30.965517576   14.42 13.75 14.39   ~ 1 0
30 2MASS J16200411-4936128 * 16 20 04.1059611792 -49 36 12.814117884           ~ 1 0
31 2MASS J16200505-4936354 Y*O 16 20 05.05032 -49 36 35.4816           ~ 2 0
32 UCAC4 203-123520 * 16 20 05.8146410520 -49 35 19.727818404       15.07   ~ 1 0
33 UCAC4 203-123521 EB* 16 20 06.0024677136 -49 35 26.953570824   14.84 13.80 13.75   ~ 2 0
34 2MASS J16200778-4935268 NIR 16 20 07.78680 -49 35 26.8836           ~ 1 0
35 2MASS J16200829-4936249 * 16 20 08.2995714648 -49 36 25.111575072           ~ 1 0
36 UCAC4 203-123534 * 16 20 08.3359735080 -49 35 55.543630920     14.95 14.72   ~ 1 0
37 SSTGLMC G333.7116+00.3559 Y*O 16 20 08.60280 -49 37 16.2012           ~ 2 0
38 2MASS J16200884-4936302 * 16 20 08.8375692264 -49 36 30.248172072           ~ 1 0
39 2MASS J16200904-4936376 * 16 20 09.0420193536 -49 36 37.744327080           ~ 1 0
40 UCAC4 203-123542 * 16 20 09.2090533368 -49 35 05.636468400   15.09 14.17 14.63   ~ 1 0
41 UCAC4 202-121121 * 16 20 09.4623242616 -49 36 34.903922544       15.41   ~ 1 0
42 2MASS J16200968-4936016 * 16 20 09.6788974896 -49 36 01.662580836           ~ 1 0
43 [VVM2018] C1 MoC 16 20 09.693 -49 36 24.99           ~ 1 0
44 GRS G333.72 +00.36 HII 16 20 09.7 -49 36 14           ~ 15 0
45 2MASS J16200981-4936172 Y*O 16 20 09.81168 -49 36 17.2836           ~ 3 0
46 2MASS J16200983-4936279 * 16 20 09.8351538096 -49 36 27.883264716           ~ 1 0
47 AGAL G333.724+00.364 bub 16 20 10.3 -49 36 19           ~ 21 0
48 2MASS J16201255-4936440 * 16 20 12.5359309536 -49 36 43.834326408           ~ 1 0
49 UCAC4 202-121166 * 16 20 14.1130335696 -49 37 32.976454836           ~ 1 0
50 2MASS J16201424-4936257 Y*O 16 20 14.24904 -49 36 25.7832           ~ 1 0
51 UCAC4 202-121178 * 16 20 14.9339591400 -49 37 17.949045072   16.88 15.72 16.12   ~ 1 0
52 2MASS J16201538-4936438 * 16 20 15.3700519560 -49 36 43.969704984           ~ 1 0
53 UCAC4 202-121187 * 16 20 15.4671745416 -49 36 51.731683488   16.54 15.59 15.97   ~ 1 0
54 2MASS J16201582-4937119 * 16 20 15.8491669416 -49 37 11.811257760           ~ 1 0
55 2MASS J16201628-4934420 Y*O 16 20 16.28064 -49 34 42.0456           ~ 2 0
56 [VVM2018] C10 MoC 16 20 16.481 -49 35 59.42           ~ 1 0
57 SDC G333.739+0.352 DNe 16 20 16.79 -49 36 14.5           ~ 8 0
58 SSTGLMC G333.7413+00.3472 Y*O 16 20 18.67728 -49 36 23.2704           ~ 1 0
59 AGAL G333.759+00.366 Y*O 16 20 18.75 -49 34 54.0           ~ 12 0
60 [VVM2018] C2 MoC 16 20 19.091 -49 34 53.54           ~ 1 0
61 2MASS J16201936-4934588 * 16 20 19.3501355064 -49 34 58.931956308           ~ 2 0
62 SSTGLMC G333.7674+00.3631 Y*O 16 20 21.41640 -49 34 36.6384           ~ 1 0
63 [VVM2018] C4 MoC 16 20 22.226 -49 35 34.16           ~ 1 0
64 UCAC4 203-123622 * 16 20 22.5235655952 -49 35 40.234186896   17.26 16.09 16.01   ~ 1 0
65 UCAC4 203-123628 * 16 20 23.3067814488 -49 35 46.357882224   17.26 16.09     ~ 1 0
66 [VVM2018] C3 MoC 16 20 24.837 -49 35 34.14           ~ 1 0
67 2MASS J16202499-4934451 Y*O 16 20 24.996 -49 34 45.16           ~ 3 0
68 SSTGLMC G333.7679+00.3406 Y*O 16 20 27.42312 -49 35 32.7444           ~ 2 0
69 2MASS J16202764-4935130 NIR 16 20 27.64152 -49 35 13.0128           ~ 1 0
70 [VVM2018] C8 MoC 16 20 27.990 -49 35 13.52           ~ 1 0
71 [VVM2018] C9 MoC 16 20 32.144 -49 35 23.76           ~ 1 0
72 NGC 6334 HII 17 20 53 -36 07.9           ~ 740 0
73 NAME Sgr B2 MoC 17 47 20.4 -28 23 07           ~ 2443 1
74 MSXDC G035.39-00.33 MoC 18 57 09.0 +02 07 46           ~ 132 0
75 W 49 SFR 19 10 20 +09 07.7           ~ 601 1
76 NAME Sct-Cen PoG ~ ~           ~ 286 0
77 2MASS J16200882-4936038 NIR ~ ~           ~ 1 0

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