2003A&A...411..193P


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.21CEST04:36:08

2003A&A...411..193P - Astronomy and Astrophysics, volume 411, 193-196 (2003/11-4)

The LBV nature of Romano's star (GR 290) in M 33.

POLCARO V.F., GUALANDI R., NORCI L., ROSSI C. and VIOTTI R.F.

Abstract (from CDS):

We report the first spectroscopic study of the LBV candidate GR 290 in M 33 (``Romano's star'') taken in February 2003, showing, besides prominent hydrogen and He i emission lines, the 4630-60Å blend and weak He II 4686Å emission typical of Of stars. Our broad-band photometry shows that the star was observed during a phase of minimum optical luminosity, with B=17.91±0.03, and a slightly positive colour index, which we tentatively attribute to an anomalous continuum energy distribution. We argue that GR 290 is indeed an LBV star presently in a high temperature phase, that should be followed - also in a short time - by ample spectroscopic and associated photometric variations.

Abstract Copyright:

Journal keyword(s): stars: evolution - stars: emission-lines, Be - stars: individual: GR 290 - stars: mass-loss - galaxies: individual: M 33

Simbad objects: 5

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Number of rows : 5

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 M 33 GiG 01 33 50.904 +30 39 35.79 6.17 6.27 5.72     ~ 5191 1
2 NAME Romano's Star WR* 01 35 09.7011265200 +30 41 57.173367187   16.5 18.04     Ofpe/WN9 46 1
3 HD 269858 s*b 05 36 43.6942807271 -69 29 47.449383685   10.24 10.15 9.95 9.05 LBV 267 2
4 V* AG Car WR* 10 56 11.5779283438 -60 27 12.809532379 7.00 7.57 6.96 7.73   WN11h 595 0
5 7C 1219+2830 BLL 12 21 31.6902446545 +28 13 58.500383827   16.81 16.11 14.24   ~ 781 1

    Equat.    Gal    SGal    Ecl

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2020.10.21-04:36:08

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