RMxAA

Revista Mexicana de Astronomía y Astrofísica

ISSN: 3061-8649
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Keywords

Astrophysics

How to Cite

Romano’s Star in M33: LBV Candidate or LBV?. (2001). Revista Mexicana De Astronomía Y Astrofísica, 37(1), 57-61. https://astronomia.unam.mx/journals/rmxaa/article/view/2001rmxaa..37...57k

Abstract

We present the light curve of the Luminous Blue Variable candidate star GR 290 (Romano's star) in M33. The photographic photometry was made in photographic plates taken in B band of the M33 galaxy and cover an eight year period, 1982 -- 1990. Twenty five plates, separated in seven groups, have been used. CCD B magnitude of the star is also presented. The analysis of our data together with the Romano's magnitudes (1978) shows ``normal'' eruptions with amplitude of more than 1 mag and timescale of about 20 years and smaller oscillations with amplitude 0.5 mag and a period of about 320 days. This is a typical photometrical behavior for LBVs.
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