2004A&A...413L..15C


C.D.S. - SIMBAD4 rel 1.7 - 2019.10.21CEST18:22:51

2004A&A...413L..15C - Astronomy and Astrophysics, volume 413, L15-18 (2004/1-2)

A newly identified Luminous Blue Variable in the galactic starburst cluster Westerlund 1.

CLARK J.S. and NEGUERUELA I.

Abstract (from CDS):

We present observations of the massive transitional star W243 in Westerlund 1. We find an apparent spectral type of early-mid A from our data, in contrast to an earlier classification of B2I, made from data obtained in 1981. The concurrent development of a rich emission line spectrum suggests a very high mass loss rate; the continued presence of Hei emission suggesting that the underlying star remains significantly hotter than implied by its apparent spectral type. We suggest that W243 is a Luminous Blue Variable undergoing an eruptive phase, leading to an extreme mass loss rate and the formation of a pseudo photosphere.

Abstract Copyright:

Journal keyword(s): stars: evolution - stars: variables: general - winds, outflows - supergiants

Simbad objects: 8

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Number of rows : 8

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 [HS53] B s*b 01 33 49.1983926201 +30 38 09.102418246 15.330 16.243 16.208 16.026 15.947 LBV 50 0
2 Cl Westerlund 1 OpC 16 47 04.00 -45 51 04.9           ~ 442 0
3 Cl* Westerlund 1 W 9 WR* 16 47 04.1422943113 -45 50 31.307461802   21.8 17.47 14.47 11.74 Be 44 0
4 Cl* Westerlund 1 BKS AS * 16 47 05.4063692757 -45 50 36.608299661   22.1 16.79     M5-6Ia 27 0
5 Cl* Westerlund 1 W 243 s*b 16 47 07.5028508821 -45 52 29.152464693   19.873 15.730     LBV 48 0
6 HD 160529 sg* 17 41 59.0257256544 -33 30 13.702939546 8.17 7.87 6.66 5.50 4.51 A2Ia 182 1
7 IRC +10420 pA* 19 26 48.0981288433 +11 21 16.756524951   13.98 11.66     F8Ia+e 448 0
8 NAME Local Group GrG ~ ~           ~ 6661 0

    Equat.    Gal    SGal    Ecl

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2019.10.21-18:22:51

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