2002A&A...386.1019U


Query : 2002A&A...386.1019U

2002A&A...386.1019U - Astronomy and Astrophysics, volume 386, 1019-1027 (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.

Abstract Copyright:

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 - 2021
#notes
1 M 31 G 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 11371 1
2 [HS80] B38 s?b 01 33 00.8235549754 +30 35 04.724441949 16.111 17.204 17.322 17.362 17.378 B1I 17 0
3 [HS80] B133 s*b 01 33 28.9550344531 +30 47 43.975373675 15.715 16.677 16.742 16.737 16.756 B2.5Ia 33 0
4 [HS80] 110A s*b 01 33 41.220 +30 22 37.15 15.181 16.236 16.285 16.279 16.321 B1Ia 22 0
5 [HS80] 217a * 01 33 44.8 +30 36 18   17.3 17.40     ~ 7 0
6 M 33 GiG 01 33 50.904 +30 39 35.79 6.17 6.27 5.72     ~ 5317 1
7 [HS80] B354 * 01 33 53.284 +30 35 26.26 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 51.1109734592 -07 39 54.521218438   9.98 9.05     K1III 5 0
10 HD 38711 PM* 05 47 25.2583360379 -06 22 32.895748704   10.09 9.39     G3V 5 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 551 0
12 HD 39777 * 05 54 34.6960054175 -04 03 52.963431157 5.58 6.381 6.551     B2III/IV 87 0
13 * zet CMa Ce* 06 20 18.7920398 -30 03 48.120242 2.12 2.83 3.00     B2.5V 150 0
14 * iot CMa bC* 06 56 08.2241266 -17 03 15.267468 3.62 4.297 4.385 6.40   B3Ib/II 163 1
15 V* Z CMa Ae* 07 03 43.1588002461 -11 33 06.230351311 10.51 9.99 8.80     B5/8eq+F5/7 537 3
16 HD 148688 s*b 16 31 41.7695375461 -41 49 01.729591907 5.16 5.78 5.39 5.05 4.70 B1Iaeqp 154 0
17 * zet01 Sco s*b 16 53 59.7270104119 -42 21 43.313745214 4.80 5.31 4.79 4.32 3.86 B1Ia-0ek 352 0
18 * k Sco s*b 17 04 49.3525354906 -34 07 22.541655837 4.44 5.13 4.87 4.59 4.42 B2Iab 145 0
19 HD 198487 * 20 51 07.0204942639 -15 15 46.445019839   10.54 9.41     K1III 4 0

    Equat.    Gal    SGal    Ecl

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2021.07.27-06:21:41

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