2003A&A...409..589H


Query : 2003A&A...409..589H

2003A&A...409..589H - Astronomy and Astrophysics, volume 409, 589-598 (2003/10-2)

The physical structure of high-mass star-forming cores.

HATCHELL J. and VAN DER TAK F.F.S.

Abstract (from CDS):

We present models of the temperature and density structure of the envelopes of ten deeply embedded massive stars associated with ultracompact Hii regions. Constraints come from 60-1300µm photometry including ISO-LWS spectra, maps at 450 and 850µm, and CS emission line data. Radial profiles extracted from the maps after removing neighbouring sources were modelled taking the chopping process into account. The line data are modelled with a Monte Carlo program and the continuum data with a dust radiative transfer code. For an assumed n(r)∝r–p density structure, the index p is found to be uniformly distributed between 1.25 and 2.25 for this sample. The density power law index from radial profiles and emission lines agree well (by ±0.25), while the continuum spectrum sometimes deviates (by ±0.5). Reliable models thus require all three kinds of data.

Abstract Copyright:

Journal keyword(s): stars: formation - ISM: dust, extinction - ISM: HII regions - ISM: molecules - ISM: structure

Simbad objects: 11

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Number of rows : 11
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 GAL 005.88-00.41 HII 18 00 30.388 -24 04 00.20           ~ 319 0
2 GAL 009.62+00.19 HII 18 06 13.9 -20 31 44           ~ 192 0
3 GAL 010.47+00.03 HII 18 08 38.4 -19 51 52           ~ 124 0
4 IRAS 18097-1825A cor 18 12 40 -18 24.4           ~ 61 0
5 GAL 013.87+00.28 HII 18 14 35.8 -16 45 31           ~ 34 0
6 CORNISH G029.9559-00.0168 Y*O 18 46 04.18 -02 39 21.3           ~ 351 0
7 IRAS 18449-0115 cor 18 47 34.29 -01 12 44.5           ~ 348 0
8 OH 34.26 +0.15 SFR 18 53 18.54 +01 14 57.9           ~ 482 0
9 GAL 045.5+00.0 HII 19 14 20.8 +11 09 04           ~ 138 0
10 CORNISH G045.4545+00.0591 HII 19 14 21.31 +11 09 11.7           ~ 152 1
11 NAME Cygnus 2N HII 20 21 44.1 +37 26 40           ~ 115 1

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2022.05.23-13:09:08

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