26 citations · 102 across the 17 of their papers we have counts for
17 papers
FG Sge: new multicolor photometry and short-term dust shell clearing in 2019
V. P. Arkhipova, N. P. Ikonnikova, V. I. Shenavrin +6
We present the results of a new stage of the long-term photometric study of FG Sge which is a quickly evolving central star of the planetary nebula Hen 1-5. Our new observations ca…
Spectroscopic Variability of the Compact Planetary Nebula Hb 12
N. P. Ikonnikova, I. A. Shaposhnikov, V. F. Esipov +5
We present the results of our new low-resolution spectroscopic observations of the young compact planetary nebula Hb 12 performed in 2011-2020 with SAI MSU telescopes. We have meas…
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…
Line identification and photometric history of the hot post-AGB star Hen 3-1013 (IRAS 14331-6435)
V. P. Arkhipova, M. Parthasarathy, N. P. Ikonnikova +4
We present a study of the high-resolution optical spectrum for the hot post-asymptotic giant branch (post-AGB) star, Hen 3-1013, identified as the optical counterpart of the infrar…
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…