2009A&A...508..615L


C.D.S. - SIMBAD4 rel 1.7 - 2020.02.25CET17:27:48

2009A&A...508..615L - Astronomy and Astrophysics, volume 508, 615-640 (2009/12-3)

Massive star formation in Wolf-Rayet galaxies. II. Optical spectroscopy results.

LOPEZ-SANCHEZ A.R. and ESTEBAN C.

Abstract (from CDS):

We have performed a comprehensive multiwavelength analysis of a sample of 20 starburst galaxies that show the presence of a substantial population of very young massive stars, most of them classified as Wolf-Rayet (WR) galaxies. In this paper, the second of the series, we present the results of the analysis of long-slit intermediate-resolution spectroscopy of star-formation bursts for 16 galaxies of our sample. We study the spatial localization of the WR stars in each galaxy. We analyze the excitation mechanism and derive the reddening coefficient, physical conditions, and chemical abundances of the ionized gas. We study the kinematics of the ionized gas to check the rotation/turbulence pattern of each system. When possible, tentative estimates of the Keplerian mass of the galaxies are calculated. Aperture effects and the exact positioning of the slit onto the WR-rich bursts seem to play a fundamental role in their detection. We check that the ages of the last star-forming burst estimated using optical spectra agree with those derived from Hα imagery. Our analysis shows that a substantial fraction of the galaxies exhibit evidence of perturbed kinematics. With respect to the results found in individual galaxies, we remark the detection of objects with different metallicity and decoupled kinematics in Haro 15 and Mkn 1199, the detection of tidal streams in IRAS 08208+2816, Tol 9, and perhaps in SBS 1319+579, and the development of a merging process in both SBS 0926+606 A and Tol 1457-262. All of these results - in combination with those obtained in Paper I - reinforce the hypothesis that interactions with or between dwarf objects is a very important mechanism in triggering massive-star formation in starburst galaxies, especially in dwarf ones. It must be highlighted that only deep and very detailed observations - as presented in this paper - can provide clear evidences that these subtle interaction processes are taking place.

Abstract Copyright:

Journal keyword(s): stars: Wolf-Rayet - galaxies: abundances - galaxies: starburst - galaxies: interactions - galaxies: dwarf - galaxies: kinematics and dynamics

Simbad objects: 52

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Number of rows : 52

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 MCG-02-01-051 EmG 00 18 50.898 -10 22 36.49   14.81 14.33     ~ 117 3
2 Mrk 960 bCG 00 48 35.430 -12 42 59.77   15.5       ~ 102 0
3 BD+12 237 * 01 49 09.4876507020 +13 33 11.794087104   10.38 10.19     sdA0IVHe1 79 0
4 UGC 1809 G 02 20 53.456 +00 33 24.27           ~ 17 1
5 UVQS J022054.52+003324.3 AGN 02 20 54.530 +00 33 24.46   16.50       ~ 55 1
6 Mrk 1087 AGN 04 49 44.469 +03 20 02.67   15.49 15.04     ~ 75 1
7 2MFGC 4113 G 05 01 35.550 -04 15 47.42   15.35   14.73   ~ 58 0
8 HCG 31 CGG 05 01 37 -04 15.4           ~ 122 0
9 HCG 31e G 05 01 37.5 -04 15 57           ~ 24 0
10 NGC 1741 IG 05 01 38.3 -04 15 25   13.7   13.02 13.6 ~ 248 0
11 HCG 31f1 PoG 05 01 39.71 -04 16 22.2           ~ 10 0
12 HCG 31a1 G 05 01 39.74 -04 15 12.4           ~ 5 0
13 HCG 31f2 PoG 05 01 40.15 -04 16 27.5           ~ 9 0
14 IC 399 EmG 05 01 44.083 -04 17 19.28   15.0 14.8     ~ 65 0
15 BD+52 913 WD* 05 05 30.6182785658 +52 49 51.920797126 10.25 11.44 11.69 11.93 12.108 DA.8 970 0
16 Mrk 5 H2G 06 42 15.9 +75 37 40   17.0       ~ 108 0
17 HD 289002 * 06 45 13.3726265810 +02 08 14.688016523 10.06 10.62 10.44     B1 224 0
18 Mrk 1199 GiG 07 23 43.462 +33 26 31.22   13.7 13.13     ~ 103 0
19 2MASX J08235499+2806223 EmG 08 23 54.9669334368 +28 06 21.605409814   15.5       ~ 52 0
20 2MASX J08382309+6507160 SBG 08 38 23.093 +65 07 16.05     14.16     ~ 115 1
21 LB 555 EmG 09 30 06.437 +60 26 53.34   17.0       ~ 34 0
22 LEDA 26955 G 09 30 09.041 +60 28 05.37           ~ 44 0
23 SBSG 0926+606B GiP 09 30 09.6 +60 28 04   18.0       ~ 12 0
24 APG 252 IG 09 44.8 -19 41           ~ 12 0
25 ESO 566-7 IG 09 44 58.4 -19 43 32   15.36   14.66   ~ 15 0
26 ESO 566-8 IG 09 44 59.65 -19 42 45.6   15.56   14.59   ~ 29 0
27 LEDA 28398 EmG 09 51 31.7633448632 +52 59 36.023024415   18       ~ 44 0
28 ESO 436-42 EmG 10 34 38.727 -28 34 59.80   14.44 14.41 13.26   ~ 49 0
29 ESO 436-46 EmG 10 34 50.574 -28 34 58.56   13.44   12.24   ~ 32 0
30 Feige 34 HS* 10 39 36.7377085527 +43 06 09.209752646 9.613 10.91 11.14 11.319 11.464 sdOp 598 0
31 MCG+06-24-038 G 10 57 47.0058448322 +36 15 38.809066317   15.5 16     ~ 39 1
32 6dFGS gJ115111.7-203557 H2G 11 51 11.7 -20 35 56   15.67   15.35   ~ 81 1
33 HD 105183 HS* 12 06 47.2351675221 +11 40 12.658737086   10.93 11.06     sdB8IIIHe2 103 0
34 LEDA 39055 EmG 12 14 02.479 +53 45 17.35   18       ~ 68 0
35 MCG+09-20-121 G 12 14 18.1664655565 +52 56 28.712007156   16       ~ 5 0
36 M 91 LIN 12 35 26.430 +14 29 46.75   14.63 13.57     ~ 520 0
37 M 94 SyG 12 50 53.148 +41 07 12.55 9.15 8.96 8.24 7.78   ~ 1198 3
38 NGC 5113 G 13 21 22.4 +57 41 28   15.2       ~ 19 0
39 LEDA 2816050 G 13 21 22.6 +57 41 29   18.5       ~ 26 0
40 2MASX J13212499+5741501 GiP 13 21 24.045 +57 41 40.13   18.5       ~ 27 0
41 SBSG 1319+579C G 13 21 25.10 +57 42 38.0           ~ 17 0
42 HZ 44 HS* 13 23 35.2632775627 +36 07 59.545982652 10.186 11.42 11.65 12.00 11.995 sdBN0VIIHe28 368 0
43 M 83 SBG 13 37 00.919 -29 51 56.74 8.85 8.11 7.52 7.21   ~ 2187 2
44 KSRWR HII-2 H2G 13 39 55.9 -31 38 24           ~ 25 0
45 NGC 5253 AGN 13 39 55.990 -31 38 24.11 11.48 10.94 10.49 10.33   ~ 1254 4
46 KSRWR HII-1 H2G 13 39 56.00 -31 38 25.8           ~ 17 0
47 [HCG2004] NGC 5253 C 4 H2G 13 39 56.020 -31 38 27.89           ~ 31 0
48 MCG+07-29-060 QSO 14 17 01.716 +43 30 13.52   15.6       ~ 148 0
49 ESO 513-11 PaG 15 00 27.10 -26 26 57.0   15.85       ~ 52 0
50 Feige 110 HS* 23 19 58.3995050606 -05 09 56.170282845 10.360 11.45 11.50 11.970 12.145 sdO8VIIIHe5 543 1
51 LEDA 71605 EmG 23 30 09.7 +25 31 56   15.0       ~ 52 0
52 HCG 31h G ~ ~           ~ 8 0

    Equat.    Gal    SGal    Ecl

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2020.02.25-17:27:48

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