2006A&A...455..549R


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.08CEST06:00:02

2006A&A...455..549R - Astronomy and Astrophysics, volume 455, 549-559 (2006/8-4)

Hα line profiles for a sample of supergiant HII regions. II. Broad, low intensity components.

ROZAS M., RICHER M.G., LOPEZ J.A., RELANO M. and BECKMAN J.E.

Abstract (from CDS):

We analyze the broad, low intensity, high velocity components that are seen in the Hα line profiles for a sample of HII regions. These HII regions are chosen from among the brightest and most isolated in a sample of spiral galaxies for which we have photometric and spectroscopic data: NGC 157, NGC 3631, NGC 6764, NGC 3344, NGC 4321, NGC 5364, NGC 5055, NGC 5985, and NGC 7479. We confirm that the line profiles of most of these bright, giant extragalactic HII regions contain broad kinematic components of low intensity, but high velocity, that we denote as wings. We analyze these components, deriving emission measures, central velocities, and velocity dispersions of the blue and red features, which are similar. We interpret these components as expanding shells within the HII regions and produced by the stellar winds from the ionizing stars. We compare the kinetic energies of these expanding shells with the kinetic energy available from the stellar winds. If we allow for the hypothesis that the brightest HII regions are density bounded, we show that, for these HII regions, the stellar wind mechanism can explain the observed shell kinetic energies.

Abstract Copyright:

Journal keyword(s): ISM: HII regions - ISM: kinematics and dynamics

Simbad objects: 22

goto Full paper

goto View the reference in ADS

Number of rows : 22

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 NGC 157 EmG 00 34 46.751 -08 23 47.36   11.0 19.00 10.03 10.7 ~ 325 0
2 M 33 GiG 01 33 50.904 +30 39 35.79 6.17 6.27 5.72     ~ 5134 1
3 NGC 604 HII 01 34 32.1 +30 47 01           ~ 544 0
4 NGC 925 H2G 02 27 16.913 +33 34 43.97   10.69 10.12 9.55   ~ 693 1
5 NGC 1530 G 04 23 27.102 +75 17 44.05   13.40       ~ 251 1
6 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 14826 1
7 RMC 136 Cl* 05 38 42.396 -69 06 03.36           ~ 1734 1
8 NGC 2403 AGN 07 36 51.396 +65 36 09.17 9.31 8.84 8.38 8.19   ~ 1606 1
9 NGC 3344 EmG 10 43 31.150 +24 55 19.99 10.38 10.54 9.86 9.71   ~ 342 1
10 NGC 3359 EmG 10 46 36.845 +63 13 25.10 10.83 11.03 10.57     ~ 339 1
11 NGC 3631 IG 11 21 02.944 +53 10 09.95   11.0       ~ 323 1
12 M 100 AGN 12 22 54.9318850854 +15 49 20.294302163 10.04 10.05 9.35     ~ 1646 2
13 M 63 LIN 13 15 49.2738527699 +42 01 45.726078017   9.34 8.59 8.35   ~ 1055 2
14 NGC 5364 GiP 13 56 12.004 +05 00 52.06   13.2       ~ 232 0
15 M 101 GiP 14 03 12.583 +54 20 55.50   8.46 7.86 7.76   ~ 2544 2
16 NGC 5461 HII 14 03 40.96 +54 19 02.4           ~ 175 0
17 NGC 5462 HII 14 03 53.0963767939 +54 22 06.523516069           ~ 76 0
18 NGC 5471 EmG 14 04 28.627 +54 23 52.84           ~ 230 1
19 NGC 5985 SyG 15 39 37.0620220294 +59 19 55.246166585   15.24 14.22     ~ 217 0
20 NGC 6764 LIN 19 08 16.348 +50 55 59.14   15.00 14.32     ~ 275 1
21 NGC 6951 Sy2 20 37 14.1181441937 +66 06 20.078027288   11.64 10.65     ~ 497 2
22 NGC 7479 Sy2 23 04 56.668 +12 19 22.36 11.74 11.60 10.85 10.47 9.66 ~ 664 2

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2006A&A...455..549R and select 'bookmark this link' or equivalent in the popup menu


2020.07.08-06:00:02

© Université de Strasbourg/CNRS

    • Contact