1996A&A...312...24M

Query : 1996A&A...312...24M

1996A&A...312...24M - Astronomy and Astrophysics, volume 312, 24-32 (1996/8-1)

Spectroscopic observations of AB supergiants in M 33.

MONTEVERDE M.I., HERRERO A., LENNON D.J. and KUDRITZKI R.P.

Abstract (from CDS):

We have observed 10 luminous blue stars in M 33 at intermediate dispersion and have determined spectral types and luminosity classes from the blue and red spectrograms by comparing with galactic and SMC stars. Hα profiles have proved to be very useful in dissentangling luminosity and metallicity effects, and constitute a valuable diagnostic when comparing spectral classifications in galaxies with different metallicities. We derive qualitative estimates of the stellar metallicities which range from solar to SMC-like and are broadly consistent with abundance gradient results obtained for M 33 from HII region studies. Comparison of the new data for B 324 with previous work shows that there is evidence for significant spectral variability strongly suggesting an LBV nature for this star.

Abstract Copyright: ∼

Journal keyword(s): stars: early types - stars: supergiants - galaxies: individual: M 33 - galaxies: stellar content

Simbad objects: 35

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Number of rows : 35
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     ~ 12717 1
2 SK 13 s*b 00 47 12.2164410744 -73 06 33.111710784   12.52 12.48     B2.5Ia 71 0
3 BBB SMC 259 s*b 00 47 38.7409708152 -73 07 48.851948496   12.17 12.24     B5Ia 33 0
4 SK 31 s*b 00 49 51.2735728512 -72 55 45.253625124   11.16 11.16     B2Ia 42 0
5 HD 4976 s*b 00 50 06.0800706288 -73 07 45.303645288   11.12 11.00     B8Ia+ 69 0
6 HD 4841 Em* 00 51 25.9269354192 +63 46 52.209157764 7.13 7.43 6.86 6.28 5.90 B5Ia 86 0
7 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 11220 1
8 CPD-72 77 s*b 01 02 49.6101049512 -72 10 14.479892112 10.54 10.98 10.90   10.88 B9Ia 45 0
9 [HS80] B92 a WR* 01 33 11.4057062976 +30 48 56.816562744 15.789 16.607 16.494 16.398 16.311 WNE+B3I 12 0
10 [HS80] B133 s*b 01 33 28.9563601920 +30 47 44.000454012 15.715 16.677 16.742 16.737 16.756 B2.5Ia 33 0
11 [HS80] 110C s*y 01 33 36.5727153504 +30 22 07.880771280 17.075 17.037 16.742 16.565 16.373 F0Ia 8 0
12 [HS80] 110A s*b 01 33 41.2375209576 +30 22 37.077649428 15.181 16.236 16.285 16.279 16.321 B1Ia 22 0
13 IFM-B 1040 * 01 33 50.2 +30 38 37     15.90     ~ 3 0
14 [MBH96] 215 * 01 33 50.3952186571 +30 38 33.733830325 15.922 15.944 16.335 15.751 15.610 B2Ib 11 0
15 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 5865 1
16 [HS80] B324 s*y 01 33 55.9379338944 +30 45 30.471104880 14.941 15.287 14.859 14.545 14.398 A8-F0Ia 31 1
17 2MASS J01335939+3023106 sg* 01 33 59.40 +30 23 10.6 16.482 17.282 17.183 17.056 16.990 A0Ia 7 0
18 IFM-B 1345 s*b 01 33 59.8100051472 +30 23 00.211648812 15.386 16.404 16.395 16.332 16.327 B6Ia 8 0
19 [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
20 WDG 1 s*b 01 41 42.0683863272 -73 50 38.183979624   11.86 11.84     B1.5Ia 65 0
21 * 5 Per s*b 02 11 29.1934233120 +57 38 43.964680956 6.23 6.68 6.35 6.02 5.75 B5Ia 184 0
22 HD 13841 * 02 16 46.3906698552 +57 01 45.670054584 6.95 7.60 7.37 7.11 6.95 B1.5Ib 126 0
23 HD 14899 * 02 26 18.4722014256 +57 13 41.989770768 7.72 7.83 7.39     A0Ib 61 0
24 HD 14956 s*b 02 26 45.6955268424 +57 40 45.044622588 7.63 7.92 7.20 6.56 6.05 B1.5Ia 148 0
25 * chi02 Ori s*b 06 03 55.1843706432 +20 08 18.428141364 4.24 4.91 4.63 4.32 4.10 B2Ia 451 0
26 * 3 Gem s*b 06 09 43.9852949424 +23 06 48.472220448 5.33 5.96 5.75     B3Ia 226 0
27 HD 190603 s*b 20 04 36.1742825304 +32 13 06.953333016 5.73 6.19 5.65 5.13 4.71 B1.5Ia+ 344 0
28 * 55 Cyg s*b 20 48 56.2915921440 +46 06 50.883645024 4.83 5.28 4.86 4.41 4.10 B4Ia 493 0
29 * 9 Cep Pu* 21 37 55.2241394424 +62 04 54.990376788 4.49 5.03 4.73 4.42 4.24 B2Ib 301 0
30 [HS80] 31 As* ~ ~           ~ 2 0
31 [HS80] 109 As* ~ ~           ~ 1 0
32 [HS80] 135 As* ~ ~           ~ 1 0
33 [HS80] 110 As* ~ ~           ~ 5 0
34 [HS80] 142 As* ~ ~           ~ 5 0
35 [HS80] 67 As* ~ ~           ~ 3 0

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