2007A&A...467..603R


C.D.S. - SIMBAD4 rel 1.7 - 2019.09.23CEST09:54:15

2007A&A...467..603R - Astronomy and Astrophysics, volume 467, 603-610 (2007/5-4)

Hα line profiles for a sample of supergiant HII regions. III. Model line profiles.

ROZAS M., RICHER M.G., STEFFEN W., GARCIA-SEGURA G. and LOPEZ J.A.

Abstract (from CDS):

We carried out a series of 1D hydrodynamical computations with the ZEUS fluid solver in order to reproduce the salient features in our high-resolution Hα emission line profiles of a sample of HII regions (see Rozas et al., 2006A&A...455..539R, 2006A&A...455..549R). Four models were computed. In the first and second cases, an ionization-bounded HII region was modeled with and without a shell produced by stellar winds. In the third and fourth cases, a density-bounded HII region was considered, both with and without a shell driven by stellar winds. The resulting line profiles have been modeled using the SHAPE rendering program. We find that our observed high-quality profiles are well-reproduced in the density-bounded model that includes an expanding shell formed as a result of the stellar winds from the ionizing stars. Finally, we consider the effects that the finite slit widths used for the observations have on the physical conditions deduced from the line profile of the ionized bubble.

Abstract Copyright:

Journal keyword(s): ISM: HII regions - ISM: kinematics and dynamics - stars: winds, outflows

Simbad objects: 7

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Number of rows : 7

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 NGC 588 HII 01 32 45.2 +30 38 54 14.59 14.40 14.44 14.89 15.16 ~ 115 1
2 NGC 604 HII 01 34 32.1 +30 47 01           ~ 539 0
3 NGC 2363 G 07 28 29.83 +69 11 32.8   15.5       ~ 244 1
4 NGC 2363A HII 07 28 42.8 +69 11 21           ~ 535 3
5 M 100 AGN 12 22 54.9318850854 +15 49 20.294302163 10.04 10.05 9.35     ~ 1615 2
6 M 101 GiP 14 03 12.583 +54 20 55.50   8.46 7.86 7.76   ~ 2462 2
7 NGC 5471 EmG 14 04 28.627 +54 23 52.84           ~ 226 1

    Equat.    Gal    SGal    Ecl

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2019.09.23-09:54:15

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