2003A&A...397..859S

Query : 2003A&A...397..859S

2003A&A...397..859S - Astronomy and Astrophysics, volume 397, 859-870 (2003/1-3)

A large Wolf-Rayet population in NGC 300 uncovered by VLT-FORS2.

SCHILD H., CROWTHER P.A., ABBOTT J.B. and SCHMUTZ W.

Abstract (from CDS):

We have detected 58 Wolf-Rayet candidates in the central region of the nearby spiral galaxy NGC 300, based on deep VLT-FORS2 narrow-band imaging. Our survey is close to complete except for heavily reddened WR stars. Of the objects in our list, 16 stars were already spectroscopically confirmed as WR stars by Schild & Testor and Breysacher et al., to which 4 stars are added using low resolution FORS2 datasets. The WR population of NGC 300 now totals 60, a threefold increase over previous surveys, with WC/WN≥1/3, in reasonable agreement with Local Group galaxies for a moderately sub-solar metallicity. We also discuss the WR surface density in the central region of NGC 300. Finally, analyses are presented for two apparently single WC stars - #29 (alias WR3, WC5) and #48 (alias WR13, WC4) located close to the nucleus, and at a deprojected radius of 2.5kpc, respectively. These are among the first models of WR stars in galaxies beyond the Local Group, and are compared with early WC stars in our Galaxy and LMC.

Abstract Copyright: ∼

Journal keyword(s): galaxies: individual: NGC 300 - stars: Wolf-Rayet - stars: fundamental parameters

Nomenclature: Table 1: [SCA2003] NN (Nos 1-58).

CDS comments: in ref list SEATON 1979MNRAS.187p..73S instead of MNRAS.187.73

Simbad objects: 86

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Number of rows : 86
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 12645 1
2 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 11146 1
3 [MPG2004] 57 WR* 00 54 41.82 -37 38 36.5   18.93 18.92     ~ 4 0
4 [DCL88] 48 HII 00 54 41.84 -37 38 36.4           ~ 4 0
5 STWR 10 WR* 00 54 42.1 -37 43 06           ~ 4 0
6 [BL97] N300-S11 SNR 00 54 42.61 -37 43 13.7           ~ 15 2
7 [SCA2003] 3 WR* 00 54 42.61 -37 40 28.5           WNE 2 0
8 [SCA2003] 4 WR* 00 54 42.78 -37 43 01.8           WN 2 0
9 [DCL88] 53C HII 00 54 42.82 -37 42 55.1     17.09     ~ 8 0
10 [SCA2003] 5 WR* 00 54 43.53 -37 39 49.9           WCe 2 0
11 [DCL88] 54 HII 00 54 43.67 -37 39 46.3           ~ 3 0
12 [SCA2003] 6 WR* 00 54 44.75 -37 42 40.0           WN 1 0
13 [SCA2003] 7 WR* 00 54 45.22 -37 38 48.0           ~ 2 0
14 [SCA2003] 8 WR* 00 54 45.28 -37 38 47.0           WNL 3 0
15 [DCL88] 61 HII 00 54 45.35 -37 38 47.0           ~ 13 0
16 [SCA2003] 9 WR* 00 54 47.69 -37 42 45.3     20.62     WN 2 0
17 STWR 9 WR* 00 54 49.9 -37 38 21   19.4       WCwn+ 5 0
18 [BAT97] I 2 WR* 00 54 50.2 -37 38 23   21.4       WNE 4 0
19 [SCA2003] 10 WR* 00 54 50.21 -37 40 29.7     20.04     ~ 1 0
20 [DCL88] 76A SNR 00 54 50.29 -37 40 26.9           ~ 9 0
21 [S66b] 39 HII 00 54 50.34 -37 38 22.6     17.24     ~ 16 2
22 [SCA2003] 13 WR* 00 54 50.6 -37 38 08     20.58     ~ 1 0
23 [DCL88] 76B HII 00 54 50.74 -37 40 15.2           ~ 8 0
24 [SCA2003] 15 WR* 00 54 50.91 -37 38 30.0     20.41     ~ 1 0
25 [SCA2003] 16 WR* 00 54 51.00 -37 38 26.1     20.27     ~ 1 0
26 [PFP2004] J005451.1-373826 HII 00 54 51.15 -37 38 22.8     18.01     ~ 10 1
27 [SCA2003] 17 WR* 00 54 51.31 -37 38 26.3           ~ 1 0
28 [SCA2003] 18 WR* 00 54 51.65 -37 39 39.2     18.79     ~ 2 0
29 [DCL88] 84 SNR 00 54 51.73 -37 39 38.6 17.168 19.517 19.073     ~ 19 0
30 [SCA2003] 19 WR* 00 54 51.89 -37 39 11.5     19.24     ~ 1 0
31 [DCL88] 85 HII 00 54 52.05 -37 41 40.6           ~ 6 0
32 2MASS J00545263-3741486 * 00 54 52.6388109672 -37 41 48.686122644     17.57     ~ 2 0
33 [MPG2004] 86 WR* 00 54 52.93 -37 38 38.3     20.97     ~ 2 0
34 [SCA2003] 22 WR* 00 54 53.09 -37 43 34.0     21.71     WC 1 0
35 [DCL88] 87 HII 00 54 53.1 -37 43 31           ~ 3 0
36 [SCA2003] 23 WR* 00 54 53.11 -37 43 47.3     19.71     ~ 2 0
37 [DCL88] 88 HII 00 54 53.12 -37 43 44.0           ~ 6 0
38 NGC 300 GiG 00 54 53.4465638304 -37 41 03.168402396 8.83 8.69 8.13 7.46   ~ 1502 2
39 [DCL88] 90 HII 00 54 53.49 -37 43 43.7           ~ 6 0
40 STWR 1 WR* 00 54 53.5 -37 40 19     21.64     ~ 4 0
41 STWR 11 WR* 00 54 53.80 -37 43 47.2     21.34     ~ 2 0
42 [SCA2003] 25 WR* 00 54 54.57 -37 41 54.7     20.27     ~ 1 0
43 [SCA2003] 26 WR* 00 54 55.67 -37 40 25.1     20.10     ~ 1 0
44 [DCL88] 96 HII 00 54 55.86 -37 40 10.2           ~ 4 0
45 [SCA2003] 27 WR* 00 54 55.99 -37 40 17.6     20.47     ~ 2 0
46 [BL97] N300-H13 HII 00 54 56.38 -37 40 28.1           ~ 10 0
47 STWR 3 WR* 00 54 56.76 -37 40 44.0     21.61     WC4/6 4 0
48 STWR 2 WR* 00 54 57.2 -37 40 33     22.05     WNe 4 0
49 [SCA2003] 30 WR* 00 54 58.95 -37 43 58.7     22.01     WN 1 0
50 [DCL88] 107 HII 00 54 59.14 -37 43 57.7           ~ 2 0
51 [SCA2003] 31 WR* 00 55 00.65 -37 38 51.5     22.14     WNE 2 0
52 [SCA2003] 32 WR* 00 55 02.33 -37 38 27.4     18.84     ~ 1 0
53 [DCL88] 115 HII 00 55 02.63 -37 38 27.0     17.05     ~ 7 0
54 [BAT97] II 1 WR* 00 55 02.940 -37 43 15.96   22.0       WC 4 0
55 STWR 12 WR* 00 55 03.410 -37 42 42.14   22.3       WC7 5 0
56 [SCA2003] 35 WR* 00 55 03.55 -37 42 49.4     18.82     ~ 2 0
57 [SCA2003] 36 WR* 00 55 03.64 -37 43 20.0     17.97     ~ 2 0
58 [MKW2020] 118-WR1 WR* 00 55 03.780 -37 42 51.80     18.56     WC 3 0
59 STWR 7 WR* 00 55 04.170 -37 43 18.91   20.2       WN7 6 0
60 [SCA2003] 39 WR* 00 55 04.17 -37 43 16.6     19.99     ~ 1 0
61 STWR 6 WR* 00 55 05.40 -37 41 13.0     21.56     WC4/6 3 0
62 CXOU J005510.0-374212 HXB 00 55 09.990 -37 42 12.16     22.44     WNE 126 1
63 [SCA2003] 42 WR* 00 55 11.03 -37 37 55.5     22.39     WNL 2 0
64 [BAT97] V 1 WR* 00 55 12.0 -37 41 34     21.69     WC 2 0
65 [BAT97] IV 1 WR* 00 55 12.0 -37 41 16   19.2       WN 2 0
66 [DCL88] 137D HII 00 55.2 -37 41           ~ 2 0
67 [SCA2003] 43 WR* 00 55 12.07 -37 41 21.9     19.83     ~ 1 0
68 [SCA2003] 44 WR* 00 55 12.19 -37 41 19.7     17.80     ~ 1 0
69 STWR 13 WR* 00 55 12.3 -37 41 19     21.87     WC 3 0
70 STWR 5 WR* 00 55 12.39 -37 41 30.2   20.6       WC4/5 4 0
71 STWR 4 WR* 00 55 12.63 -37 41 39.4   19.0       WN3/6 5 0
72 [SCA2003] 50 WR* 00 55 12.65 -37 41 38.5     19.73     ~ 2 0
73 [DCL88] 137B HII 00 55 12.70 -37 41 23.1           ~ 9 0
74 [SCA2003] 51 WR* 00 55 12.72 -37 41 44.6     20.38     ~ 2 0
75 [DRW83] NGC 300 14 HII 00 55 12.79 -37 41 37.0     16.84     ~ 20 2
76 [BAT97] V 4 WR* 00 55 13.1 -37 41 42   22.2       WN 2 0
77 [SCA2003] 52 WR* 00 55 13.18 -37 38 01.4     22.74     WCe 2 0
78 [SCA2003] 56 WR* 00 55 13.51 -37 41 37.9     17.68     ~ 1 0
79 [SCA2003] 57 WR* 00 55 13.61 -37 41 32.0     20.34     ~ 2 0
80 [DCL88] 137C HII 00 55 13.86 -37 41 36.9     15.34     ~ 10 0
81 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 5838 1
82 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 17432 0
83 M 83 SBG 13 37 00.91920 -29 51 56.7400 8.85 8.11 7.52 7.21   ~ 2572 2
84 NGC 6822 G 19 44 56.199 -14 47 51.29   18 8.1     ~ 1562 0
85 [SCA2003] 58 WR* ~ ~     18.75     ~ 1 0
86 NAME Local Group GrG ~ ~           ~ 8389 0

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