2002A&A...386.1019U

Query : 2002A&A...386.1019U

2002A&A...386.1019U - Astronomy and Astrophysics, volume 3861019-1027 (2002/5-2)

An analysis of STIS HST UV spectra of M 33 early B supergiants.

URBANEJA M.A., HERRERO A., KUDRITZKI R.P., BRESOLIN F., CORRAL L.J. and PULS J.

Abstract (from CDS):

We present terminal velocities of M 33 B-supergiants, obtained from STIS HST spectra as part of our programme to investigate the Wind Momentum - Luminosity Relationship (WLR) in the Local Group. Terminal velocities are derived from their NV, CIV, and SiIV resonance lines in UV spectra. Comparing with IUE spectra of Galactic B-supergiants we found evidence of low metallicity in three of our objects. The terminal velocities are consistent with the corresponding values of Galactic stars, except for B-133. For this star we find a very large v∞ and a red SiIV component deeper than the blue one, that might be an indication of binarity. The average ratio between terminal and turbulent wind velocities is 0.25, well above the value found for Galactic stars.

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Journal keyword(s): stars: atmospheres - stars: early-types - stars: supergiants - stars: fundamental parameters - stars: winds, outflows - galaxies: individual: M 33

Simbad objects: 19

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Number of rows : 19
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 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
2 [HS80] B38 s*b 01 33 00.8233999800 +30 35 04.723949616 16.111 17.204 17.322 17.362 17.378 B1I 18 0
3 [HS80] B133 s*b 01 33 28.9563601920 +30 47 44.000454012 15.715 16.677 16.742 16.737 16.756 B2.5Ia 34 0
4 [HS80] 110A s*b 01 33 41.2375209576 +30 22 37.077649428 15.181 16.236 16.285 16.279 16.321 B1Ia 23 0
5 [HS80] 217a * 01 33 44.8 +30 36 18     17.40     ~ 7 0
6 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
7 [HS80] B354 * 01 33 53.2114301008 +30 35 25.894729405 16.353 17.109 17.153 17.145 17.092 B1III: 9 0
8 [HS80] B526 s*b 01 34 16.10 +30 33 44.9 16.318 17.170 17.120 16.964 16.847 B2.5Ia 18 0
9 HD 22591 PM* 03 37 51.1109220144 -07 39 54.521988732   9.98 9.05     K1III 5 0
10 HD 38711 PM* 05 47 25.2581352768 -06 22 32.893783932   10.09 9.39     G3V 6 0
11 * kap Ori s*b 05 47 45.3888404 -09 40 10.577707 0.87 1.88 2.06 2.09 2.27 B0.5Ia 588 0
12 HD 39777 * 05 54 34.6960877928 -04 03 52.967826720 5.58 6.381 6.551     B2III/IV 101 0
13 * zet CMa Ce* 06 20 18.7920398 -30 03 48.120242 2.12 2.82 2.99     B2.5V 170 0
14 * iot CMa s*b 06 56 08.2245944314 -17 03 15.259069948 3.62 4.297 4.385 6.40   B3Ib 184 0
15 V* Z CMa Ae* 07 03 43.1599411656 -11 33 06.209065836 10.51 9.99 8.80     B5/8eq+F5/7 601 3
16 HD 148688 s*b 16 31 41.7687715992 -41 49 01.732565676 5.16 5.78 5.39 5.05 4.70 B1Iaeqp 170 0
17 * zet01 Sco s*b 16 53 59.7271314888 -42 21 43.307334468 4.80 5.31 4.79 4.32 3.86 B1.5Ia+ 390 0
18 * k Sco s*b 17 04 49.3516568736 -34 07 22.541680380 4.44 5.13 4.87 4.59 4.42 B2Iab 158 0
19 HD 198487 * 20 51 07.0206065784 -15 15 46.441789704   10.54 9.41     K1III 5 0

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