2001A&A...370..100H


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.23CEST02:54:21

2001A&A...370..100H - Astronomy and Astrophysics, volume 370, 100-111 (2001/4-4)

High-resolution imaging of ultracompact HII regions. III. G11.11-0.40 and G341.21-0.21.

HENNING T., FELDT M., STECKLUM B. and KLEIN R.

Abstract (from CDS):

We present the first near-infrared images of the two massive southern star-forming regions G11.11-0.40 and G341.21-0.21, obtained with adaptive optics at sub-arcsecond resolution. Together with conventional narrow-band near-infrared images and polarization maps, mid-infrared data, millimetre and radio data, we were able to determine the morphological structure and to constrain the stellar content of the regions. In both cases the molecular cloud cores have masses of about 500 M and contain clusters of OB stars. This supports the view that massive stars do not form in isolation. In the case of G11.11-0.40 we could identify the central O star responsible for the ionization of the ultracompact HII region. Our results for G341.21-0.21 indicate that this source is a precursor of an ultracompact HII region.

Abstract Copyright:

Journal keyword(s): stars: formation - stars: early type - ISM: HII regions - methods: observational

Simbad objects: 13

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Number of rows : 13

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 HD 2811 * 00 31 18.4899049146 -43 36 23.000296607   7.67 7.50     A3V 25 0
2 HD 97048 Ae* 11 08 03.3105687971 -77 39 17.491180130 9.03 8.76 9.00   8.64 A0Vep 463 0
3 * alf Sco ** 16 29 24.45970 -26 25 55.2094 4.08 2.75 0.91 -0.64 -1.87 M0.5Iab+B3V: 706 0
4 GSC 07880-01158 * 16 52 16.8540984035 -44 26 50.570154406           ~ 1 0
5 OH 341.22 -0.21 cor 16 52 17.86 -44 26 52.3           ~ 48 0
6 [JD2012] G341.211-00.233 HII 16 52 22 -44 28.0           ~ 12 0
7 NGC 6334A HII 17 20 19.3 -35 54 55           ~ 113 0
8 TYC 5081-2166-1 * 17 44 06.7891062164 -00 24 58.057924013 11.970 11.816 11.490 11.303 11.081 A0 25 0
9 IRAS 18085-1931 Y*O 18 11 32.01912 -19 30 39.6972           ~ 31 0
10 HD 312787 Em* 18 11 33.1403882218 -19 30 31.605376212   11.35 10.81 10.71   F8 19 0
11 GAL 045.5+00.0 HII 19 14 20.8 +11 09 04           ~ 138 0
12 [GPD88] 045.454+0.060 HII 19 14 21.3 +11 09 13           ~ 150 1
13 HD 210427 PM* 22 10 51.3999750336 -26 54 03.409891959   10.989 10.360     G1V 5 0

    Equat.    Gal    SGal    Ecl

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2020.10.23-02:54:21

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