1995A&A...302..830S

Query : 1995A&A...302..830S

1995A&A...302..830S - Astronomy and Astrophysics, volume 302830-838 (1995/10-3)

A detailed study of a very late WN star in M 33.

SMITH L.J., CROWTHER P.A. and WILLIS A.J.

Abstract (from CDS):

We present the first quantitative analysis of a M 33 Wolf-Rayet star, the Ofpe/WN9 candidate MCA1-B (Willis et al. 1992). From new higher resolution observations analysed with the Wolf-Rayet standard model, we reclassify MCA1-B as WN9 and find its stellar parameters (T*=29kK, Teff=19kK, log L/L☉=5.8, log {dot}(M)/M☉/yr=-4.0, v∞=420km/s) to be very similar to the LMC WN9 stars (Crowther et al. 1995a), and R84 in particular. Chemical abundances (H/He=2.6, N/He=0.003, C/N<0.1) are also comparable to R84 indicating a similar evolutionary status (probable dormant LBV) and metallicity (Z∼0.008) consistent with its location in the outer regions of M 33.

Abstract Copyright: ∼

Journal keyword(s): stars: abundances - stars: fundamental parameters - stars: Wolf-Rayet - stars: individual: MCA1-B (M 33) (MCA 1B) - stars: individual: R 84 (LMC) (RMC 84) - galaxies: individual: M 33

Simbad objects: 27

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Number of rows : 27
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 HD 9269 PM* 01 31 46.6730831136 +30 37 29.141088600   9.11 8.07 11.5   K0IIIv 31 0
2 [HS80] B5 WR* 01 32 37.72 +30 40 05.6 16.445 17.498 17.627 17.447 17.473 Ofpe/WN9 35 0
3 NGC 588 HII 01 32 45.2 +30 38 54 14.59 14.40 14.44 14.89 15.16 ~ 126 1
4 NGC 595 HII 01 33 33.53 +30 41 29.8           ~ 213 0
5 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
6 NGC 604 HII 01 34 32.1 +30 47 01           ~ 608 0
7 Brey 10a WR* 04 57 27.4544617632 -67 39 02.864000880 12.213 13.314 13.496   13.564 O2If*/WN5 63 1
8 LHA 120-S 9 WR* 04 57 41.0338477008 -66 32 42.553604940 12.191 12.91 12.82 12.91 11.781 WN10 58 0
9 HD 269006 s*b 05 02 07.3942092168 -71 20 13.116800076 9.93 10.60 10.55 10.43 10.38 LBV 261 0
10 HD 33133 WR* 05 03 08.9126630616 -66 40 57.492259824   12.46 12.63 12.85   WN7h 99 0
11 BD+52 913 WD* 05 05 30.6180977592 +52 49 51.919301604 10.25 11.44 11.69 11.93 12.108 DA.8 1153 0
12 HD 269227 WR* 05 13 54.2756276088 -69 31 46.665067440 11.429 11.98 11.918 12.13 10.557 WN9/10+M2Ia 167 0
13 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
14 LHA 120-S 108 WR* 05 27 42.6930652824 -69 10 00.379546536 12.243 13.232 13.41 13.67 13.287 WN8ha 48 0
15 HD 269582 WR* 05 27 52.6621673400 -68 59 08.488879836 12.206 10.818 11.093 12.70 11.234 WN10h 117 0
16 Brey 44a WR* 05 31 18.0558143832 -69 08 45.425541264   14.55 14.26 14.26   WN8ha 31 0
17 HD 269687 WR* 05 31 25.5247745448 -69 05 38.556251700 10.86 11.78 11.87 12.05   WN11h 122 0
18 LHA 120-S 125 WR* 05 35 54.3748881672 -68 59 07.890914940 12.463 13.324 13.266 13.33 12.609 WN9ha 77 0
19 HD 269858 s*b 05 36 43.6936418088 -69 29 47.451149232   10.24 10.15 9.95 9.05 LBV 296 2
20 W61 3-8 WR* 05 38 58.0963884840 -69 29 19.558532292       12.51 12.43 WN9h 61 0
21 HD 86161 WR* 09 54 52.9033957968 -57 43 38.274644604 7.94 8.65 8.36 8.93   WN8h 230 0
22 HD 96548 WR* 11 06 17.2032351624 -65 30 35.241182028 7.10 7.80 7.70 8.49   WN8h 427 0
23 EM* AS 268 WR* 18 02 23.4574037952 -23 34 37.491692196   14.38 12.31 11.43   WN9h 106 0
24 HD 313846 WR* 18 05 25.7344895280 -23 00 20.334949992 10.48 10.69 9.89 9.89   WN9h+OB 143 0
25 HD 177230 WR* 19 03 59.0233422072 -04 19 01.910240688 11.32 11.60 11.12     WN8 177 0
26 Hen 2-427 WR* 19 11 30.8749167768 +16 51 38.200938264   12.19 11.50     WN8h 350 0
27 MR 119 WR* 23 00 10.1253892224 +60 55 38.410870260 11.85 11.949 10.844 10.520   WN8h 106 0

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