2020MNRAS.497.4436D


Query : 2020MNRAS.497.4436D

2020MNRAS.497.4436D - Mon. Not. R. Astron. Soc., 497, 4436-4447 (2020/October-1)

Ultracompact H II regions with extended emission: the case of G43.89-0.78 and its molecular environment.

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

Abstract (from CDS):

The Karl Jansky Very Large Array (VLA), Owens Valley Radio Observatory (OVRO), Atacama Large Millimetric Array (ALMA), and the infrared Spitzer observatories are powerful facilities to study massive star formation regions and related objects such as ultra-compact (UC) H II regions, molecular clumps, and cores. We used these telescopes to study the UC H II region G43.89-0.78. The morphological study at arcminute scales using NVSS and Spitzer data shows that this region is similar to those observed in the bubble-like structures revealed by Spitzer observations. With this result, and including a physical characterization based on 3.6 cm data, we suggest G43.89-0.78 be classified as an UC H II region with Extended Emission because it meets the operational definition given in this paper comparing radio continuum data at 3.6 and 20 cm. For the ultra-compact component, we use VLA data to obtain physical parameters at 3.6 cm confirming this region as an UC H II region. Using ALMA observations, we detect the presence of a dense (2.6 x 107 cm–3) and small (∼ 2.0 arcsec; 0.08 pc) molecular clump with a mass of 220 M and average kinetic temperature of 21 K, located near to the UC H II region. In this clump, catalogued as G43.890-0.784, water masers also exist, possibly tracing a bipolar outflow. We discover in this vicinity two additional clumps which we label as G43.899-0.786 (Td = 50 K; M = 11 M) and G43.888-0.787 (Td = 50 K; M = 15 M).

Abstract Copyright: © 2020 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): Stars: massive - H II regions - ISM: molecules - Infrared: ISM - Radio lines: ISM

Nomenclature: Figs 4-5, Table 5: [DTT2020] GLLL.lll+BB.bbb (Nos G043.890-00.784, G043.899-00.786, G043.888-00.787).

Simbad objects: 23

goto Full paper

goto View the references in ADS

Number of rows : 23
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 4C 09.57 BLL 17 51 32.81857326 +09 39 00.7284066   17.46 16.78 15.57   ~ 896 1
2 GAL 005.48-00.24 HII 17 59 02.89 -24 20 54.5           ~ 41 0
3 GAL 005.97-01.17 HII 18 03 40.501 -24 22 44.46           ~ 33 0
4 GAL 010.30-00.15 HII 18 08 58.315 -20 05 15.27           ~ 81 0
5 IRAS 18097-1825A cor 18 12 40 -18 24.4           ~ 61 0
6 [KJB2003] G18.149-0.283 HII 18 25 01.2 -13 15 29           ~ 16 0
7 GAL 019.60-00.23 HII 18 27 37.7 -11 56 37           ~ 14 0
8 [CKW87] 183109.3-080954 HII 18 33 52.5 -08 07 32           ~ 31 0
9 [KJB2003] G23.437-0.207 HII 18 34 44.4 -08 32 23           ~ 4 0
10 GAL 028.20-00.04 HII 18 42 58.2 -04 14 05           ~ 54 0
11 GAL 031.40-00.26 HII 18 49 32.1 -01 29 04           ~ 44 0
12 GAL 037.55-00.11 HII 19 00 15.7 +04 03 13           ~ 40 0
13 GAL 035.20-01.74 Y*O 19 01 47.0 +01 13 08           ~ 73 1
14 CORNISH G037.8731-00.3996 HII 19 01 53.58 +04 12 51.7           ~ 38 1
15 IRAS 19110+1045 Y*O 19 13 22.0427 +10 50 53.336           ~ 122 0
16 Caswell OH 045.12+00.13 HII 19 13 27.845 +10 53 36.74           ~ 116 0
17 CORNISH G045.4545+00.0591 HII 19 14 21.31 +11 09 11.7           ~ 152 1
18 GAL 043.89-00.78 HII 19 14 26.16 +09 22 34.0           ~ 51 0
19 GB6 B1920+1524 Rad 19 22 34.69936025 +15 30 10.0326112           ~ 54 0
20 GAL 054.10-00.06 HII 19 31 42.3 +18 42 52           ~ 10 0
21 GAL 060.88-00.13 Mas 19 46 20.4 +24 35 25           ~ 13 1
22 GAL 077.96-00.01 HII 20 29 38.1 +39 02 04           ~ 39 1
23 LBN 111.14-00.72 HII 23 16 07 +60 02.5           ~ 95 1

To bookmark this query, right click on this link: simbad:objects in 2020MNRAS.497.4436D and select 'bookmark this link' or equivalent in the popup menu


2022.12.10-03:13:28

© Université de Strasbourg/CNRS

    • Contact