2008A&A...484..463S


C.D.S. - SIMBAD4 rel 1.7 - 2020.05.27CEST08:47:51

2008A&A...484..463S - Astronomy and Astrophysics, volume 484, 463-467 (2008/6-3)

Wra751, a luminous blue variable developing an S Doradus cycle.

STERKEN C., VAN GENDEREN A.M., PLUMMER A. and JONES A.F.

Abstract (from CDS):

The object Wra 751 is a luminous blue variable that lately exhibits strong changes in light and color. We summarise the available photometry of Wra 751, present new photometric observations, and discuss these data with special attention on the systematic differences between the various data sources. In addition, we establish an empirical relationship between b-y and B-V for this class of stars. Wra 751 is a strong-active member of the S Dor class, and it exhibits very-long term S Doradus phases with an amplitude of about two magnitudes in V and a cycle length of several decades. The associated B-V colour-index amplitude is about 0.4 mag. At this moment this LBV, which is the reddest member of the class, is going through the bright (and red) stage of a long-term S Dor cycle.The S Dor behaviour of this system shows some resemblence to the temporal characteristics of the Galactic LBV AG Car, because the time scales and amplitudes of light and colour variability are very similar.

Abstract Copyright:

Journal keyword(s): stars: variables: general - stars: individual: Wra 751 - stars: early-type - stars: supergiants - techniques: photometric

VizieR on-line data: <Available at CDS (J/A+A/484/463): table2.dat table3.dat table4.dat>

Status at CDS:  

Simbad objects: 22

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Number of rows : 22

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 LHA 115-S 6 s*b 00 46 55.0295095056 -73 08 34.139503944 12.14 13.02 12.91   12.52 B0/0.5[e] 77 1
2 SK 61 * 00 55 47.60 -72 39 31.1   13.280 13.268     B8 7 0
3 SK 119 s*b 01 04 58.0667436864 -72 39 59.517707378 11.57 10.12 12.34   12.23 B2Ia 31 0
4 HD 6884 s*b 01 07 18.2183812921 -72 28 03.658768522   10.32 10.2     B9Ia0ek 112 0
5 HD 269006 s*b 05 02 07.3944119328 -71 20 13.118657760 9.93 10.60 10.55 10.43 10.38 LBV 232 0
6 HD 269128 s*b 05 10 22.7894940469 -68 46 23.818379498 9.77 10.52 10.412 10.29 10.268 B2.5Ieq 92 0
7 V* S Dor sg* 05 18 14.3572490675 -69 15 01.148131817 9.08 10.39 10.25 9.74 9.14 A5Iaeq 341 0
8 HD 269662 sg* 05 30 51.4755593461 -69 02 58.591230109 10.23 10.52 10.28 10.40 10.390 A0Ia 90 0
9 HD 269700 s*b 05 31 52.2818792698 -68 32 38.856584550 9.71 10.56 10.54 10.38 10.38 B1.5Iaeq 76 0
10 HD 37836 Em* 05 35 16.6331678655 -69 40 38.439677992 9.87 10.736 10.599 10.73 10.164 B0e(q) 72 0
11 NAME Car Arm PoG 10 00 -60.0           ~ 376 1
12 HD 90177 s*b 10 22 53.8426931454 -59 37 28.361118869 9.16 9.66 8 8.15   LBV 301 0
13 * eta Car Em* 10 45 03.5455050 -59 41 03.951060 6.37 7.034 6.21 4.90 4.41 OBepec 2188 0
14 V* AG Car WR* 10 56 11.5779283438 -60 27 12.809532379 7.00 7.57 6.96 7.73   WN11h 585 0
15 MR 35 s*b 11 08 40.0633818066 -60 42 51.718989987   12.33 10.20 11.66   LBV 113 0
16 HD 96946 * 11 08 51.7683332783 -60 45 33.909177801 7.93 8.69 8.55 9.24   O6.5III(f) 56 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 347 0
18 HD 160529 sg* 17 41 59.0257256544 -33 30 13.702939546 8.17 7.87 6.66 5.50 4.51 A2Ia 183 1
19 HD 316285 s*b 17 48 14.0369781568 -28 00 53.124817157 11.88 11.27 9.60 9.28   B0Ieq 178 2
20 HD 168607 s*b 18 21 14.8855350307 -16 22 31.760520819 10.23 9.82 8.28 8.55   B9Iaep 172 1
21 HD 168625 s*b 18 21 19.5486475779 -16 22 26.077308888 10.15 9.78 8.37 8.76   B6Iap 250 2
22 * P Cyg s*b 20 17 47.2020844 +38 01 58.552724 4.66 5.24 4.82 4.28 4.02 B1-2Ia-0ep 1128 1

    Equat.    Gal    SGal    Ecl

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2020.05.27-08:47:51

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