26 citations · 58 across the 11 of their papers we have counts for
11 papers
Photometric and Spectral Evolution of the Symbiotic Nova HM Sagittae since 2003
N. P. Ikonnikova, V. I. Shenavrin, G. V. Komissarova +2
We present photometric and spectral monitoring of the symbiotic system HM Sge, which consists of a Mira variable with a dust shell and a hot white dwarf ionizing the surrounding ga…
IRAS 22272+5435 (V354 Lac): Multicolor Photometry of a Variable Carbon-rich post-AGB Star and a Dust Formation Episode
N. P. Ikonnikova, V. I. Shenavrin, G. V. Komissarova +1
We present new UBV photometric observations (2009-2024) of the carbon-rich post-AGB star IRAS 22272+5435 (V354 Lac), combined with our data spanning over 30 years (1991-2024). The…
Surprising Variability of the Planetary Nebula IC 4997 = QV Sge
V. P. Arkhipova, M. A. Burlak, N. P. Ikonnikova +3
We present the results of a new epoch of a long-term photometric monitoring of the variable planetary nebula IC~4997. The integral light curves display a continuing brighteni…
Second Outburst of the Yellow Symbiotic Star LT Delphini
N. P. Ikonnikova, G. V. Komissarova, V. P. Arkhipova
We present the results of our photoelectric observations of the yellow symbiotic star LT Del over 2010-2018. The binary system LT Del, which consists of a bright K giant and…
Multicolor photometry and spectroscopy of the yellow supergiant with dust envelope HD 179821=V1427 Aquilae
N. P. Ikonnikova, O. G. Taranova, V. P. Arkhipova +5
We present the results of multicolor (UBVJHKLM) photometry (2009-2017) and low-resolution spectroscopy (2016-2017) of the semi-regular variable V1427 Aql=HD 179821, a yellow superg…
Photometric and Spectroscopic Study of the Supergiant with an Infrared Excess V1027 Cygni
V. P. Arkhipova, O. G. Taranova, N. P. Ikonnikova +4
We present the results of our and -photometry for the semiregular pulsating variable V1027~Cyg, a supergiant with an infrared excess, over the period from 1991 to 2015…
IRAS 19135+3937: An SRd variable as interacting binary surrounded by a circumbinary disc
N. Gorlova, H. Van Winckel, N. P. Ikonnikova +6
Semi-regular (SR) variables are not a homogeneous class and their variability is often explained due to pulsations and/or binarity. This study focuses on IRAS 19135+3937, an SRd va…
Variability of Hot Post-AGB Star IRAS 19336-0400 in the Early Phase of its Planetary Nebula Ionization
V. P. Arkhipova, M. A. Burlak, V. F. Esipov +2
We present photoelectric and spectral observations of a hot candidate proto-planetary nebula - early B-type supergiant with emission lines in spectrum - IRAS 19336-0400. The light…
Variability of Hot Supergiant IRAS 19336-0400 in the Early Phase of its Planetary Nebula Ionization
V. P. Arkhipova, M. A. Burlak, V. F. Esipov +2
We present photoelectric and spectral observations of a hot candidate proto-planetary nebula - early B-type supergiant with emission lines in spectrum - IRAS 19336-0400. The light…
UBV Photometry of the Post-AGB Star IRAS 22272+5435=V354 Lac in 1990-2008
V. P. Arkhipova, N. P. Ikonnikova, G. V. Komissarova
New UBV-photometry obtained in 2000-2008 is presented for the post-AGB star IRAS 22272+5435=V354 Lac. The star showed semi-regular light variations with varying amplitudes. The max…
Pulsations and Long-Term Light Variability of Three Candidates to Protoplanetary Nebulae
V. P. Arkhipova, N. P. Ikonnikova, G. V. Komissarova
We present new photometric data and analysis of the long-duration UBV photoelectric observations for three candidates to protoplanetary objects - F-supergiants with IR-excesses loc…