2020MNRAS.492..895D

Query : 2020MNRAS.492..895D

2020MNRAS.492..895D - Mon. Not. R. Astron. Soc., 492, 895-914 (2020/February-2)

Ultracompact H II regions with extended emission: the complete view.

DE LA FUENTE E., PORRAS A., TRINIDAD M.A., KURTZ S.E., KEMP S.N., TAFOYA D., FRANCO J. and RODRIGUEZ-RICO C.

Abstract (from CDS):

In this paper, we present the results of a morphological study performed on a sample of 28 ultracompact H II (UC H II) regions located near extended free-free emission, using radio continuum (RC) observations at 3.6 cm with the C and D Very Large Array (VLA) configurations, with the aim of determining a direct connection between them. By using previously published observations in B and D VLA configurations, we compiled a final catalogue of 21 UC H II regions directly connected with the surrounding extended emission (EE). The observed morphology of most of the UC H II regions in RC emission is irregular (single- or multipeaked sources) and resembles a classical bubble structure in the Galactic plane with well-defined cometary arcs. RC images superimposed on colour composite Spitzer images reinforce the assignations of direct connection by the spatial coincidence between the UC components and regions of saturated 24 µm emission. We also find that the presence of EE may be crucial to understand the observed infrared excess because an underestimation of ionizing Lyman photons was considered in previous works (e.g. Wood & Churchwell; Kurtz, Churchwell & Wood).

Abstract Copyright: © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): stars: pre-main-sequence - ISM: bubbles - HII regions - radio continuum: ISM

VizieR on-line data: <Available at CDS (J/MNRAS/492/895): table1.dat-table7.dat>

Simbad objects: 58

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Number of rows : 58
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 [KCW94] 106.800+05.316 Rad 17 41 26.3 +63 02 38           ~ 4 0
3 GAL 005.48-00.24 HII 17 59 02.66 -24 20 51.4           ~ 44 1
4 NAME Her 36SE Y*O 18 03 40.3201232304 -24 22 42.857540472 10.26 11.022 10.372 10.267   O8V+ 210 0
5 GAL 005.97-01.17 HII 18 03 40.51 -24 22 44.4           ~ 33 0
6 IRAS 18006-2422 HII 18 03 45.7 -24 22 41           ~ 23 0
7 GAL 010.30-00.15 HII 18 08 56.11 -20 05 53.8           ~ 85 0
8 IRAS 18097-1825A cor 18 12 39.72 -18 24 20.5           ~ 69 0
9 GAL 018.15-00.28 HII 18 25 01.08 -13 15 39.3           ~ 16 0
10 IRAS 18222-1321 * 18 25 03.18 -13 19 12.8           ~ 3 0
11 GAL 019.61-00.23 HII 18 27 38.0 -11 56 42           ~ 162 0
12 GAL 019.60-00.23 HII 18 27 38.11 -11 56 39.5           ~ 16 0
13 PMN J1832-1035 rG 18 32 20.83647 -10 35 11.1968           ~ 107 1
14 IRAS 18311-0809 HII 18 33 53.5 -08 07 26           ~ 31 0
15 GAL 023.71+00.17 HII 18 33 53.54 -08 07 13.8           ~ 31 0
16 GAL 023.44-00.18 HII 18 34 43.6 -08 32 25           ~ 58 0
17 GAL 023.46-00.20 HII 18 34 44.92 -08 31 07.4           ~ 12 0
18 ISOGAL-P J183802.9-062347 Y*? 18 38 02.80 -06 23 47.0           ~ 32 0
19 IRAS 18353-0628 HII 18 38 04.9 -06 25 28           ~ 22 0
20 GAL 028.20-00.04 HII 18 42 58.08 -04 14 04.6           ~ 61 0
21 GAL 031.40-00.26 HII 18 49 33.04 -01 29 03.7           ~ 53 0
22 AGAL G031.396-00.257 cor 18 49 33.050 -01 29 03.34           ~ 39 0
23 [KCW94] 031.397-00.257 Rad 18 49 33.090 -01 28 57.68           ~ 3 0
24 CORNISH G031.3959-00.2570 Y*O 18 49 33.25 -01 29 09.3           ~ 8 0
25 GAL 033.13-00.09 HII 18 52 07.96 +00 08 11.6           ~ 27 1
26 IRAS 18538+0216 HII 18 56 22.52 +02 20 27.0           ~ 35 0
27 GAL 037.55-00.11 HII 19 00 16.02 +04 03 15.1           ~ 41 0
28 GAL 035.20-01.74 Y*O 19 01 46.49 +01 13 24.7           ~ 78 1
29 CORNISH G037.8731-00.3996 HII 19 01 53.58 +04 12 51.7           ~ 42 1
30 GAL 043.23-00.05 HII 19 10 33.52 +09 08 25.1           ~ 25 0
31 IRAS 19110+1045 Y*O 19 13 22.0427 +10 50 53.336           ~ 132 0
32 Caswell OH 045.12+00.13 HII 19 13 27.85 +10 53 36.7           ~ 121 0
33 GAL 045.13+00.14 HII 19 13 28.3 +10 53 41           ~ 24 1
34 GAL 045.5+00.0 HII 19 14 20.8 +11 09 04           ~ 141 0
35 CORNISH G045.4545+00.0591 HII 19 14 21.31 +11 09 11.7           ~ 157 1
36 [UHP2009] VLA G045.4657+00.0453 HII 19 14 25.7 +11 09 26           ~ 31 1
37 GB6 B1918+1349 Rad 19 20 25.3 +13 55 24           ~ 1 0
38 [MCM2005b] 21 Cl* 19 20 30 +13 55.4           ~ 3 0
39 [KCW94] 048.609+00.027 Rad 19 20 30.782 +13 55 43.72           ~ 4 0
40 IRAS 19181+1349 HII 19 20 30.95 +13 55 26.7           ~ 54 0
41 [KCW94] 048.606+00.024 Rad 19 20 31.1 +13 55 23           ~ 6 0
42 ICRF J192439.4+154043 Bz? 19 24 39.45588 +15 40 43.9420           ~ 50 1
43 GAL 054.10-00.06 HII 19 31 42.22 +18 42 51.6           ~ 10 0
44 IRAS 19294+1836 Y*O 19 31 42.8 +18 42 33           ~ 16 0
45 GAL 060.88-00.13 HII 19 46 20.13 +24 35 29.4           ~ 13 1
46 SH 2-87 bub 19 46 20.69 +24 35 15.4           ~ 161 2
47 QSO J2015+371 BLL 20 15 28.72978661 +37 10 59.5147372     21.82 21.4   ~ 324 2
48 GAL 078.4+02.6 HII 20 19 39.22 +40 56 36.6           ~ 14 0
49 IRAS 20178+4046 HII 20 19 39.3 +40 56 30           ~ 48 1
50 GAL 077.96-00.01 HII 20 29 36.72 +39 01 21.9           ~ 42 1
51 [KCW94] 106.795+05.311 Rad 22 19 17.488 +63 18 41.17           ~ 5 0
52 IRAS 22176+6303 Y*O 22 19 18.23 +63 18 47.5           ~ 600 0
53 NAME SH 2-140 IRS 1 Y*O 22 19 18.277 +63 18 45.82           ~ 201 0
54 SH 2-159 Y*O 23 15 31.2384366062 +61 07 10.181362705           ~ 188 1
55 LBN 111.14-00.72 HII 23 16 03.94 +60 02 00.9           ~ 102 2
56 SH 2-157 B HII 23 16 04 +60 02.1           ~ 12 0
57 IRAS 23138+5945 mul 23 16 04.8 +60 02 00           ~ 46 0
58 ICRF J232225.9+505751 Bla 23 22 25.98217576 +50 57 51.9636751       18.6   ~ 72 1

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