55 citations · 107 across the 8 of their papers we have counts for
14 papers
Unveiling the nitrogen-rich massive star in the metal-poor galaxy NGC 4068
Anastasiya D. Yarovova, Oleg V. Egorov, Alexei V. Moiseev +1
We report the identification of the unusual emission-line stellar-like object in the nearby low-metallicity (Z ~ 0.1Zsun) dwarf galaxy NGC 4068. Our observations performed with lon…
How long can LBVs sleep? A long-term photometric vaiability and spectral study of the Galactic candidate luminous blue variable MN112
Olga Maryeva, Sergey Karpov, Alexei Kniazev +1
Luminous Blue Variables (LBVs) are massive stars that show strong spectral and photometric variability. The question of what evolutionary stages they represent and what exactly dri…
Revisiting the evolved hypergiants in the Magellanic Clouds
Michalis Kourniotis, Michaela Kraus, Olga Maryeva +2
The massive stars that survive the phase of red supergiants (RSGs) spend the rest of their life in extremity. Their unstable atmospheres facilitate the formation and episodic eject…
Wray 15-906: a candidate luminous blue variable discovered with WISE, Herschel and SALT
O. V. Maryeva, V. V. Gvaramadze, A. Y. Kniazev +1
We present the results of study of the Galactic candidate luminous blue variable Wray 15-906, revealed via detection of its infrared circumstellar shell (of \approx2 pc in diameter…
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…