2014A&A...565A..75C


C.D.S. - SIMBAD4 rel 1.7 - 2020.12.02CET13:42:30

2014A&A...565A..75C - Astronomy and Astrophysics, volume 565A, 75-75 (2014/5-1)

The ATLASGAL survey: a catalog of dust condensations in the Galactic plane.

CSENGERI T., URQUHART J.S., SCHULLER F., MOTTE F., BONTEMPS S., WYROWSKI F., MENTEN K.M., BRONFMAN L., BEUTHER H., HENNING Th., TESTI L., ZAVAGNO A. and WALMSLEY M.

Abstract (from CDS):

The formation processes and the evolutionary stages of high-mass stars are poorly understood compared to low-mass stars. Large-scale surveys are needed to provide an unbiased census of high column density sites that can potentially host precursors to high-mass stars. The ATLASGAL survey covers 420 sq.degree of the Galactic plane, between -80°<l<+60° at 870µm. Here we identify the population of embedded sources throughout the inner Galaxy. With this catalog we first investigate the general statistical properties of dust condensations in terms of their observed parameters, such as flux density and angular size. Then using mid-infrared surveys we aim to investigate their star formation activity and the Galactic distribution of star-forming and quiescent clumps. Our ultimate goal is to determine the statistical properties of quiescent and star-forming clumps within the Galaxy and to constrain the star formation processes. We optimized the source extraction method, referred to as MRE-GCL, for the ATLASGAL maps in order to generate a catalog of compact sources. This technique is based on multiscale filtering to remove extended emission from clouds to better determine the parameters corresponding to the embedded compact sources. In a second step we extracted the sources by fitting 2D Gaussians with the Gaussclumps algorithm. We have identified in total 10861 compact submillimeter sources with fluxes above 5σ. Completeness tests show that this catalog is 97% complete above 5σ and >99% complete above 7σ. Correlating this sample of clumps with mid-infrared point source catalogs (MSX at 21.3µm and WISE at 22µm), we have determined a lower limit of 33% that is associated with embedded protostellar objects. We note that the proportion of clumps associated with mid-infrared sources increases with increasing flux density, achieving a rather constant fraction of ∼75% of all clumps with fluxes over 5Jy/beam being associated with star formation. Examining the source counts as a function of Galactic longitude, we are able to identify the most prominent star-forming regions in the Galaxy. We present here the compact source catalog of the full ATLASGAL survey and investigate their characteristic properties. From the fraction of the likely massive quiescent clumps (∼25%), we estimate a formation time scale of ∼7.5±2.5x104yr for the deeply embedded phase before the emergence of luminous young stellar objects. Such a short duration for the formation of high-mass stars in massive clumps clearly proves that the earliest phases have to be dynamic with supersonic motions.

Abstract Copyright:

Journal keyword(s): surveys - stars: formation - stars: massive - ISM: structure - Galaxy: structure

VizieR on-line data: <Available at CDS (J/A+A/565/A75): table1.dat>

Nomenclature: Table 1: [CUS2014] GLLL.llll+BB.bbbb N=10861.

Status at CDS : All or part of tables of objects could be ingested in SIMBAD with priority 2.

Simbad objects: 65

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Number of rows : 65

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 NGC 2264 OpC 06 40 58 +09 53.7     3.9     ~ 1606 1
2 NAME Car Arm PoG 10 00 -60.0           ~ 384 1
3 NAME Crux Arm PoG 12 30 -60.0           ~ 85 0
4 NAME G305 Complex SFR 13 13 -62.7           ~ 53 0
5 MMB G320.231-00.284 Mas 15 09 51.94 -58 25 38.5           ~ 16 0
6 AGAL G322.164+00.622 Y*O 15 18 40 -56 39.0           ~ 10 0
7 AGAL G321.934-00.006 Y*O 15 19 42 -57 18.2           ~ 8 0
8 OH 323.74 -0.26 Mas 15 31 45.45 -56 30 50.1           ~ 44 0
9 [GMB2007b] J154316.9-540715 smm 15 43 16.9 -54 07 15           ~ 12 1
10 Caswell H2O 326.64+00.61 Mas 15 44 33.33 -54 05 31.5           ~ 23 0
11 AGAL G326.671+00.554 Y*O 15 44 57 -54 07.1           ~ 10 0
12 GAL 327.30-00.60 HII 15 53 05.0 -54 35 24           ~ 123 0
13 OH 328.24 -0.55 Mas 15 57 58.28 -53 59 22.7           ~ 38 2
14 IRAS 15541-5349 HII 15 57 59.75 -53 58 00.4           ~ 53 0
15 NAME Nor Arm PoG 16 00 -50.0           ~ 347 0
16 [CUS2014] G329.0303-0.2022 smm 16 00 31.4 -53 12 41           ~ 2 0
17 IRAS 15579-5303 of? 16 01 47.01 -53 11 43.3           ~ 33 0
18 GAL 332.80-00.60 HII 16 19 47 -51 04.1           ~ 92 1
19 OH 333.47 -0.16 cor 16 21 20.18 -50 09 48.6           ~ 22 0
20 AGAL G332.962-00.679 smm 16 21 23 -50 53.0           ~ 14 0
21 AGAL G333.129-00.559 cor 16 21 35 -50 40.9           ~ 14 0
22 OH 335.79 +0.17 cor 16 29 47.3094168743 -48 15 52.204707131           ~ 53 0
23 [GMB2007b] J163058.7-484353 smm 16 30 58.7 -48 43 53           ~ 15 1
24 AGAL G336.018-00.827 smm 16 35 09 -48 46.8           ~ 12 0
25 AGAL G336.288-01.254 Y*O 16 38 11 -48 52.0           ~ 5 0
26 AGAL G338.926+00.634 smm 16 40 14 -45 38.5           ~ 14 0
27 AGAL G338.926+00.554 cor 16 40 34 -45 41.7           ~ 17 0
28 AGAL G340.274-00.211 smm 16 48 54 -45 10.4           ~ 12 0
29 AGAL G339.681-01.209 smm 16 51 07 -46 16.1           ~ 8 0
30 MMB G340.970-01.022 Mas 16 54 57.32 -45 09 05.2           ~ 13 0
31 [PLW2012] G343.124-00.064-030.4 cor 16 58 17 -42 52.3           ~ 22 0
32 MMB G343.756-00.163 cor 17 00 49.89 -42 26 08.2           ~ 19 0
33 Caswell CH3OH 344.23-00.57 cor 17 04 07.78 -42 18 39.5           ~ 29 0
34 AGAL G348.183+00.482 Y*O 17 12 08.70 -38 30 47.4           ~ 12 0
35 AGAL G348.549-00.979 smm 17 19 20 -39 03.9           ~ 14 0
36 [CUS2014] G351.1542+0.7073 smm 17 19 53.9 -35 57 50           ~ 2 0
37 NGC 6334 HII 17 20 51 -36 06.9           ~ 595 0
38 MMB G351.445+00.660 cor 17 20 54.61 -35 45 08.6           ~ 32 0
39 NGC 6357 HII 17 26.5 -34 12           ~ 252 0
40 MMB G354.615+00.472 Mas 17 30 17.13 -33 13 55.1           ~ 43 0
41 NAME Gal Center reg 17 45 40.04 -29 00 28.1           ~ 11840 0
42 NAME Sgr B2 MoC 17 47 20.4 -28 23 07           ~ 1956 1
43 NAME Sgr B2 Main Rad 17 47 20.5 -28 23 06           ~ 342 1
44 W 31 SFR 18 10 28.6 -19 55 51           ~ 241 0
45 SNR G012.8-00.2 SFR 18 14 14.0 -17 55 50           ~ 221 0
46 M 16 OpC 18 18 48 -13 48.4   6.58 6.0     ~ 947 2
47 NGC 6618 OpC 18 20 47 -16 10.3           ~ 1494 0
48 [CUS2014] G022.5483-0.5225 smm 18 34 12.8 -09 28 18           ~ 2 0
49 [CUS2014] G023.0063-0.3991 smm 18 34 37.4 -09 00 30           ~ 2 0
50 [CUS2014] G023.0082-0.4092 smm 18 34 39.8 -09 00 41           ~ 2 0
51 [CUS2014] G023.3652-0.2887 smm 18 34 53.8 -08 38 20           ~ 2 0
52 [CUS2014] G023.2122-0.3726 smm 18 34 54.7 -08 48 48           ~ 2 0
53 AGAL G023.206-00.377 cor 18 34 55.4414 -08 49 11.648           ~ 24 0
54 SNR G030.8-00.0 SNR 18 47 32 -01 56.5           ~ 448 0
55 AGAL G034.258+00.166 Y*O 18 53 15.7 +01 15 18           ~ 6 0
56 AGAL G034.411+00.234 Y*O 18 53 18.0 +01 25 24           ~ 49 0
57 [ZYL2017] G34-2 cor 18 53 18.6 +01 24 40           ~ 37 0
58 AGAL G035.132-00.744 smm 18 58 06 +01 37.1           ~ 6 0
59 NAME Sgr Arm PoG 19 00 -30.0           ~ 533 1
60 W 49 SFR 19 10 20 +09 07.7           ~ 514 1
61 NAME W 51 Main reg 19 23 43.8 +14 30 37           ~ 131 0
62 W 51 SNR 19 23 50 +14 06.0           ~ 1160 1
63 NAME Cyg X Cld 20 28 41 +41 10.2           ~ 635 1
64 [MBS2007c] CygX-N44 Rad 20 39 01.01 +42 22 50.2           ~ 363 0
65 NAME Scutum Spiral Arm PoG ~ ~           ~ 282 0

    Equat.    Gal    SGal    Ecl

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2020.12.02-13:42:30

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