2013MNRAS.435..400U


Query : 2013MNRAS.435..400U

2013MNRAS.435..400U - Mon. Not. R. Astron. Soc., 435, 400-428 (2013/October-2)

ATLASGAL - properties of compact HII regions and their natal clumps.

URQUHART J.S., THOMPSON M.A., MOORE T.J.T., PURCELL C.R., HOARE M.G., SCHULLER F., WYROWSKI F., CSENGERI T., MENTEN K.M., LUMSDEN S.L., KURTZ S., WALMSLEY C.M., BRONFMAN L., MORGAN L.K., EDEN D.J. and RUSSEIL D.

Abstract (from CDS):

We present a complete sample of molecular clumps containing compact and ultracompact HII (UC HII) regions between ℓ = 10° and 60° and {verbar}b{verbar} < 1°, identified by combining the APEX Telescope Large Area Survey of the Galaxy submm and CORNISH radio continuum surveys with visual examination of archival infrared data. Our sample is complete to optically thin, compact and UC HII regions driven by a zero-age main-sequence star of spectral type B0 or earlier embedded within a 1000M clump. In total we identify 213 compact and UC HII regions, associated with 170 clumps. Unambiguous kinematic distances are derived for these clumps and used to estimate their masses and physical sizes, as well as the Lyman continuum fluxes and sizes of their embedded HII regions. We find a clear lower envelope for the surface density of molecular clumps hosting massive star formation of 0.05 g/cm2, which is consistent with a similar sample of clumps associated with 6.7GHz masers. The mass of the most massive embedded stars is closely correlated with the mass of their natal clump. Young B stars appear to be significantly more luminous in the ultraviolet than predicted by current stellar atmosphere models. The properties of clumps associated with compact and UC HII regions are very similar to those associated with 6.7GHz methanol masers and we speculate that there is little evolution in the structure of the molecular clumps between these two phases. Finally, we identify a significant peak in the surface density of compact and UC HII-regions associated with the W49A star-forming complex, noting that this complex is truly one of the most massive and intense regions of star formation in the Galaxy.

Abstract Copyright: © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2013)

Journal keyword(s): Stars: early-type - stars: formation - ISM: clouds - ISM: HII regions - Galaxy: structure - radio continuum: ISM

VizieR on-line data: <Available at CDS (J/MNRAS/435/400): table3.dat table4.dat refs.dat images/*>

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

CDS comments: G043.1679-00.0095 is a probable misprint for MSX6C G043.1679+00.0095.

Simbad objects: 39

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Number of rows : 39
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 NAME Per Arm PoG 03 30 +45.0           ~ 1345 0
2 NAME Perseus Cloud SFR 03 35.0 +31 13           ~ 1172 0
3 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 3818 0
4 NAME Nor Arm PoG 16 00 -50.0           ~ 365 0
5 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3250 1
6 NAME the Pipe Nebula DNe 17 30 -25.0           ~ 362 1
7 NAME Galactic Center gam 17 45 39.60213 -29 00 22.0000           ~ 12572 0
8 NAME Arches Cluster Cl* 17 45 50.5 -28 49 28           ~ 676 0
9 NAME Quintuplet Cluster OpC 17 46 13.9 -28 49 48           ~ 484 0
10 NGC 6537 PN 18 05 13.104 -19 50 34.88     13.58     ~ 415 1
11 [GRM93] G10.46+0.03 A HII 18 08 38.19 -19 51 49.4           ~ 9 0
12 [GRM93] G10.46+0.03 B HII 18 08 38.24 -19 51 50.2           ~ 4 0
13 [WC89] 010.47+0.03A cor 18 08 38.5080 -19 51 54.497           ~ 18 1
14 GAL 010.15-00.34 HII 18 09 21.5680 -20 19 27.720           ~ 73 0
15 GAL 010.2-00.3 HII 18 09 24.6 -20 19 29           ~ 78 1
16 W 31 SFR 18 10 28.6 -19 55 51           ~ 246 0
17 SNR G012.8-00.2 SFR 18 14 14.0 -17 55 50           ~ 229 0
18 GAL 015.04-00.68 HII 18 20 24.81 -16 11 35.0           ~ 20 1
19 NGC 6618 OpC 18 20 47 -16 10.3           ~ 1532 0
20 GRS G024.80 +00.10 SFR 18 38 14.8 -06 47 39           ~ 105 0
21 SNR G030.8-00.0 SNR 18 47 32 -01 56.5           ~ 475 0
22 GAL 033.50+00.20 HII 18 51 46.71 +00 35 32.3           ~ 24 0
23 GAL 034.3+00.1 SFR 18 53 22 +01 14.6           ~ 29 0
24 GAL 035.58+00.07 Rad 18 56 02.184 +02 23 11.99           ~ 4 0
25 GAL 035.05-00.52 HII 18 57 09.044 +01 39 03.37           ~ 20 0
26 NAME Sgr Arm PoG 19 00 -30.0           ~ 567 1
27 [WC89] 042.90+0.57B HII 19 07 41.754 +09 07 22.09           ~ 3 0
28 [WC89] 042.90+0.57A HII 19 07 41.952 +09 07 12.34           ~ 4 0
29 MSX6C G043.1679+00.0095 Y*O 19 10 13.9 +09 06 15           ~ 4 0
30 W 49a SFR 19 10 15.7 +09 06 05           ~ 269 2
31 MSX6C G043.1650-00.0285 Y*O 19 10 21.819 +09 05 02.83           ~ 8 1
32 GAL 044.26+00.10 HII 19 11 56.53 +10 07 02.1           ~ 7 0
33 [CKW87] 191147.3+110702 HII 19 14 08.5 +11 12 16           ~ 26 0
34 GAL 050.23+00.33 HII 19 22 34.688 +15 30 10.01           ~ 5 0
35 W 51 SNR 19 23 50 +14 06.0           ~ 1197 1
36 LBN 053.54+00.04 HII 19 30 14.9 +18 17 30           ~ 35 0
37 GAL 054.10-00.06 HII 19 31 42.3 +18 42 52           ~ 10 0
38 NAME Scutum Spiral Arm PoG ~ ~           ~ 306 0
39 NAME Sct-Cen PoG ~ ~           ~ 166 0

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2021.12.09-15:11:11

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