4 papers
Asymmetrical nebula of the M33 variable GR290 (WR/LBV)
Olga V. Maryeva, Gloria Koenigsberger, Sergey V. Karpov +5
Context: GR290 (M33 V0532=Romano's star) is a luminous M33 object undergoing photometric variability typical for luminous blue variable (LBV) stars. It lies inside Wolf-Rayet regio…
The History Goes On: Century Long Study of Romano's Star
Olga Maryeva, Roberto F. Viotti, Gloria Koenigsberger +3
GR 290 (M 33 V0532 = Romano's Star) is a unique variable star in the M33 galaxy, which simultaneously displays variability typical for luminous blue variable (LBV) stars and physic…
Wind and nebula of the M33 variable GR290 (WR/LBV)
Olga Maryeva, Gloria Koenigsberger, Oleg Egorov +4
Context: GR290 (M33/V532=Romano's Star) is a suspected post-LBV star located in M33 galaxy that shows a rare Wolf-Rayet spectrum during its minimum light phase. In spite of many st…
GR 290 (Romano's Star): 2. Light history and evolutionary state
V. F. Polcaro, O. Maryeva, R. Nesci +11
We have built the historical light curve of the luminous variable GR 290 back to 1901, from old observations of the star found in several archival plates of M 33. These old recordi…