2001AJ....121.2115S

Query : 2001AJ....121.2115S

2001AJ....121.2115S - Astron. J., 121, 2115-2123 (2001/April-0)

A mid-infrared spectral survey of galactic Wolf-Rayet stars.

SMITH J.D.T. and HOUCK J.R.

Abstract (from CDS):

We present 8-13 µm spectra at resolution R∼600 of 29 northern Galactic Wolf-Rayet stars, including the first ever reported mid-infrared (MIR) spectrum for many. Among the subtypes of the stars studied were 14 WC, 13 WN, 1 WN/WC, and an additional reclassified WN. Lines of He I and He II, along with fine-structure lines of Ne II and S IV, are strongly present in 22 of the sources observed, while six of the sources exhibit the powerful emission of heated circumstellar carbon dust. We point out similarities between our spectra and Infrared Space Observatory (ISO) observations of several of the same sources and note an unresolved discrepancy between the two data sets for the WC6 star WR 146. We investigate the diagnostic power of MIR He I and He II lines for subtype discrimination and find the line ratio Wλ(9.7 µm He II)/Wλ(11.3 µm He I+He II) can provide moderate discrimination within the WN and WC types, though the small number of stars with corresponding line pairs detected made such assessment difficult.

Abstract Copyright: ∼

Journal keyword(s): Infrared Radiation - Stars: Wolf-Rayet - Techniques: Spectroscopic

Errata: erratum vol. 122 p. 2139 (2001)

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 - 2026 		#notes
1 HD 4004 WR* 00 43 28.3971737448 +64 45 35.384652468 10.28 10.718 10.138     WN4-s 205 0
2 HD 17638 WR* 02 52 11.6613087600 +56 56 07.131052500 10.99 10.86 10.41     WC6 121 0
3 Mrk 116 AGN 09 34 02.1 +55 14 25           ~ 1179 1
4 MR 80 WR* 18 02 04.1244400656 -23 37 42.168277056   15.002 13.155 12.056   WC9 241 1
5 EM* AS 268 WR* 18 02 23.4574037952 -23 34 37.491692196   14.38 12.31 11.43   WN9h 106 0
6 HD 313643 WR* 18 04 43.6647313968 -21 09 30.555411624 13.58 13.27 12.02 11.67   WC9d 97 0
7 HD 165763 WR* 18 08 28.4692108104 -21 15 11.183076540 7.16 7.54 7.82 8.55   WC6 286 0
8 WR 112 WR* 18 16 33.4909366272 -18 58 42.341845368   20.7 17.7     WC8+O6/7III/V 143 0
9 HD 169010 WR* 18 23 16.3427231112 -13 43 26.102574732 13.53 12.99 12.02 11.95   WC 82 0
10 MR 87 WR* 18 25 30.0135261024 -14 38 40.967308176 13.38 13.09 11.86 11.33   WN6-w 84 0
11 EM* AS 306 WR* 18 27 04.2926310240 -12 22 52.676112720   14.79       WN8h 51 0
12 MR 88 WR* 18 31 02.5170578472 -06 35 49.627098096   15.34 14.19     WC9 42 0
13 RAFGL 2179 WR* 18 31 42.2111779224 -09 59 16.687233168   25.0 22.0     WC9 91 0
14 THA 20-1 WR* 18 39 17.9035317744 -10 05 30.898013928   13.07 12.43     WC9d 60 0
15 MR 89 WR* 18 41 00.8670061488 -04 26 14.484137676 13.1 12.97 11.93 11.67   WN7 74 2
16 EM* AS 320 WR* 18 44 13.1526105048 -03 47 57.775268904 13.7 13.340 13.983     WC9d 121 0
17 LS IV +00 5 WR* 18 52 17.5478270448 +00 59 44.304835128       13.77 12.25 WN10 50 0
18 HD 177230 WR* 19 03 59.0233422072 -04 19 01.910240688 11.32 11.60 11.12     WN8 177 0
19 Hen 2-427 WR* 19 11 30.8749167768 +16 51 38.200938264   12.19 11.50     WN8h 350 0
20 MR 93 WR* 19 28 15.6142522320 +19 33 21.527693100   14.83       WC7+O9(III) 114 0
21 WR 126 WR* 19 39 56.1963949728 +26 34 42.481553196   13.99 13.29     WC5 38 0
22 HD 186943 WR* 19 46 15.9393580368 +28 16 19.077099276 9.86 10.50 10.23     WN3+O9.5V 192 0
23 MR 96 WR* 19 48 18.2649812592 +30 26 52.672284420   13.3 13.4     WN4-w 35 0
24 HD 187282 WR* 19 48 32.1967360032 +18 12 03.695582124 9.60 10.49 10.51     WN4(h)-w 202 0
25 EM* AS 374 WR* 19 59 12.5931809928 +31 27 09.025581132   13.57 12.13 11.52   WN8(h) 65 1
26 MR 97 WR* 20 00 19.1223016752 +33 15 51.099973956 12.93 13.050 12.080     WN7h 84 0
27 HD 190918 WR* 20 05 57.3244526328 +35 47 18.150756792 6.11 6.88 6.75     WN5+O9I 385 0
28 HD 191765 WR* 20 10 14.1928045152 +36 10 35.070683376 7.64 8.08 8.08     WN6-s 452 0
29 HD 192103 WR* 20 11 53.5274337792 +36 11 50.525765304 7.77 8.13 8.11     WC8+OB: 339 0
30 HD 192163 WR* 20 12 06.5418877464 +38 21 17.784181008 7.12 7.49 7.50     WN6(h)-s 715 1
31 HD 192641 WR* 20 14 31.7666855880 +36 39 39.598210224 7.80 8.20 7.91     WC7pd+O9V 347 0
32 HD 193077 WR* 20 17 00.0260987184 +37 25 23.785483116 7.82 8.32 8.01 8.71   WN5o+B? 297 0
33 HD 193576 WR* 20 19 32.4229160448 +38 43 53.959035756 8.15 8.53 8.00     WN5+O6II-V 721 0
34 HD 193793 WR* 20 20 27.9757908696 +43 51 16.286840244 6.90 7.25 6.85 4.58   WC7pd+O5.5fc 754 0
35 HD 193928 WR* 20 21 31.7290073688 +36 55 12.773070696 10.67 10.60 9.78     WN5-w+O5V-III 205 0
36 WR 142 WR* 20 21 44.3438785440 +37 22 30.544989960   14.39 12.99 12.73 11.04 WO2 134 0
37 HD 195177 WR* 20 28 22.6636321896 +38 37 18.977440692 13.42 12.67 11.46     WC4+Be 91 0
38 MR 110 WR* 20 32 03.0201049320 +41 15 20.499732216   15.99 13.97     WC5 85 0
39 EM* AS 422 WR* 20 32 06.2786571432 +40 48 29.527101576   13.46 11.83     WN7o/CE+O7V(f) 107 0
40 MR 112 WR* 20 35 47.0859278605 +41 22 44.703520146     12.64 12.16   WC6+O8I-IIf 162 1
41 EM* AS 431 WR* 20 36 43.6322747712 +40 21 07.442607924     13.73 12.51   WN8(h)+B0.5V 228 0
42 HD 197406 WR* 20 41 21.5485520640 +52 35 15.142636896 10.42 10.87 10.30     WN8h+B3IV/BH 200 0
43 WR 149 WR* 21 07 11.6933616840 +48 25 36.238552680   15.90 14.70     WN5-s 47 0
44 WR 150 WR* 21 50 05.5725399960 +50 42 24.715501200   14.00 13.47     WC5 33 0
45 HD 211564 WR* 22 16 24.0318845736 +55 37 36.767570232   11.72 11.61     WN3(h)-w 123 0
46 HD 211853 WR* 22 18 45.6057566664 +56 07 33.898679364 8.84 9.534 9.236 9.108   WN6o+O6I 283 0
47 HD 213049 WR* 22 27 17.8187635824 +56 15 11.770681752   11.270 10.928 10.922   WC6 93 0
48 HD 214419 WR* 22 36 53.9548302648 +56 54 20.989190232 8.68 9.376 8.996 8.962   WN6o+O9Ib/II 385 1
49 MR 119 WR* 23 00 10.1253892224 +60 55 38.410870260 11.85 11.949 10.844 10.520   WN8h 106 0
50 HD 219460 ** 23 15 12.39033 +60 27 01.8129 10.23 10.51 9.89 9.563   B1II+WN4.5 135 0
51 HD 219460A * 23 15 12.3995306290 +60 27 01.845560649   10.97 10.57     B0.7II 128 0
52 EM* AS 513 WR* 23 43 30.5960809392 +61 55 48.139591872 12.02 11.98 11.282     WN7h+Be? 76 0

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