Search Results - "Ikonnikova, N. P"

Multiwavelength monitoring and reverberation mapping of a changing look event in the Seyfert galaxy NGC 3516 by Oknyansky, V L, Brotherton, M S, Tsygankov, S S, Dodin, A V, Bao, D-W, Zhao, B-X, Du, P, Burlak, M A, Ikonnikova, N P, Tatarnikov, A M, Belinski, A A, Fedoteva, A A, Shatsky, N I, Mishin, E O, Zheltouhov, S G, Potanin, S A, Wang, J-M, McLane, J N, Kobulnicky, H A, Dale, D A, Zastrocky, T E, Maithil, J, Olson, K A, Adelman, C, Carter, Z, Murphree, A M, Oeur, M, Schonsberg, S, Roth, T

“…ABSTRACT We present the results of photometric and spectroscopic monitoring campaigns of the changing look AGN NGC 3516 carried out in 2018 to 2020 covering…”
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High-resolution spectroscopy of the high-velocity hot post-AGB star IRAS 18379–1707 (LS 5112) by Ikonnikova, N P, Parthasarathy, M, Dodin, A V, Hubrig, S, Sarkar, G

“…ABSTRACT The high-resolution ($R\sim 48\, 000$) optical spectrum of the B-type supergiant LS 5112, identified as the optical counterpart of the post-AGB…”
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IRAS 19135+3937: an SRd variable as interacting binary surrounded by a circumbinary disc by Gorlova, N., Van Winckel, H., Ikonnikova, N. P., Burlak, M. A., Komissarova, G. V., Jorissen, A., Gielen, C., Debosscher, J., Degroote, P.

“…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…”
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Post-AGB candidate IRAS 02143+5852: Cepheid-like variability, three-layer circumstellar dust envelope and spectral features by Ikonnikova, N P, Burlak, M A, Dodin, A V, Shugarov, S Yu, Belinski, A A, Fedoteva, A A, Tatarnikov, A M, Rudy, R J, Perry, R B, Zheltoukhov, S G, Atapin, K E

“…ABSTRACT We present the results of multicolour UBVRCICJHK photometry, spectroscopic analysis and spectral energy distribution (SED) modelling for the post-AGB…”
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Long-term multiwavelength monitoring and reverberation mapping of NGC 2617 during a changing-look event by Oknyansky, V L, Brotherton, M S, Tsygankov, S S, Dodin, A V, Tatarnikov, A M, Du, P, Bao, D -W, Burlak, M A, Ikonnikova, N P, Lipunov, V M, Gorbovskoy, E S, Metlov, V G, Belinski, A A, Shatsky, N I, Zheltouhov, S G, Maslennikova, N A, Wang, J -M, Zhai, S, Fang, F -N, Fu, Y -X, Bai, H -R, Kasper, D, Huseynov, N A, McLane, J N, Maithil, J, Zastrocky, T E, Olson, K A, Chen, X, Chelouche, D, Oknyansky, R S, Buckley, D A H, Tyurina, N V, Kuznetsov, A S, Rebolo, R L, Zhao, B -X

“…ABSTRACT We present the results of photometric and spectroscopic monitoring campaigns of the changing look AGN NGC 2617 carried out from 2016 until 2022 and…”
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Line identification and photometric history of the hot post-AGB star Hen 3−1013 (IRAS 14331−6435) by Arkhipova, V P, Parthasarathy, M, Ikonnikova, N P, Ishigaki, M, Hubrig, S, Sarkar, G, Kniazev, A Y

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BVIc Observations and Search for Evolutionary Variations in the Cepheid V811 Oph Period by Berdnikov, L. N., Belinskii, A. A., Shatskii, N. I., Burlak, M. A., Ikonnikova, N. P., Mishin, E. O., Cheryasov, D. V., Zhuiko, S. V.

“…For the first time, BVI c observations of the Cepheid V811 Oph were obtained by using a new 60‑cm telescope at the Caucasus Mountain Observatory, Sternberg…”
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Symbiotic Nature of the Zirconium Star CSS 1102 by Maslennikova, N. A., Tatarnikova, A. A., Tatarnikov, A. M., Ikonnikova, N. P., Dodin, A. V.

“…Based on the spectroscopic observations carried out with the 2.5-m telescope at the Caucasus Mountain Observatory (CMO) of the Sternberg Astronomical Institute…”
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Photometric Study of the Open Cluster NGC 225 by Yalyalieva, L. N., Glushkova, E. V., Carraro, G., Ikonnikova, N. P., Gasymov, D.

“…—NGC 225 is a young moderately populated cluster with discrepant age, distance, and color excess estimates reported by different authors. We combine our…”
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Investigation of the Flaring Activity of BL Lac in July–November 2021 by Ugol’kova, L. S., Pshirkov, M. S., Goranskij, V. P., Ikonnikova, N. P., Safonov, B. S., Tatarnikov, A. M., Shimanovskaya, E. V., Burlak, M. A., Afonina, M. D.

“…The source BL Lac exhibited an enhanced activity from August 2020 to July 2022. This activity peaked in July–August 2021. In this period the source reached…”
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ZZ Tau IRS: a Low Mass UX Ori Type Star with Strong Wind by Burlak, M. A., Dodin, A. V., Zharova, A. V., Zheltoukhov, S. G., Ikonnikova, N. P., Lamzin, S. A., Potanin, S. A., Safonov, B. S., Strakhov, I. A., Tatarnikov, A. M.

“…The results of photometric, polarimetric, and spectroscopic observations of the young star ZZ Tau IRS in the visible and near-infrared bands are presented…”
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Spectrum of the Yellow Symbiotic Star LT Delphini before, during, and after the 2017 Outburst by Ikonnikova, N. P., Burlak, M. A., Arkhipova, V. P., Esipov, V. F.

“…LT Del is a yellow symbiotic system that consists of a bright K3-type giant and a hot subdwarf with a temperature ∼10 5 K. We present the results of our…”
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H 3-75: The Planetary Nebula with the Binary Central Star NSV 16624 by Arkhipova, V. P., Ikonnikova, N. P., Burlak, M. A., Dodin, A. V.

“…H 3-75 is a medium-excitation planetary nebula with a binary central star consisting of a hot subdwarf with K and a cool giant. We present the results of our…”
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Second Outburst of the Yellow Symbiotic Star LT Delphini by Ikonnikova, N. P., Komissarova, G. V., Arkhipova, V. P.

“…We present the results of our photoelectric UBV observations of the yellow symbiotic star LT Del over 2010–2018. The binary system LT Del, which consists of a…”
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The Post-AGB Star IRAS 07253–2001: Pulsations, Long-Term Brightness Variability and Spectral Peculiarities by Ikonnikova, N. P., Burlak, M. A., Dodin, A. V., Belinski, A. A., Tatarnikov, A. M., Maslennikova, N. A., Zheltoukhov, S. G., Atapin, K. E.

“…The observations and comprehensive study of intermediate initial mass stars at the late stages of evolution, and after the asymptotic giant branch (AGB) in…”
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SN 2019edo: A Type II-P Supernova with a Fast Brightness Rise and a Short Plateau Phase by Tsvetkov, D. Yu, Belinsky, A. A., Ikonnikova, N. P., Burlak, M. A., Volkov, I. M., Pavlyuk, N. N., Baklanov, P. V., Blinnikov, S. I., Ushakova, M. G., Echeistov, V. A.

“…We present the results of BVRI photometry for the type II-P supernova (SN) 2019edo in NGC 4162 obtained from April 29, 2019, to January 26, 2020, with several…”
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FG Sge: New Multicolor Photometry and Short-Term Dust Shell Clearing in 2019 by Arkhipova, V. P., Ikonnikova, N. P., Shenavrin, V. I., Burlak, M. A., Tatarnikov, A. M., Tsvetkov, D. Yu, Belinskii, A. A., Pavlyuk, N. N., Shugarov, S. Yu

“…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…”
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Photometric variability and evolutionary status of the supergiant with an infrared excess HD 179821=V1427 aquilae by Arkhipova, V. P., Esipov, V. F., Ikonnikova, N. P., Komissarova, G. V., Tatarnikov, A. M., Yudin, B. F.

“…We present new results of our UBV photometry for HD 179821=V1427 Aql, an F supergiant with an infrared excess, from 2000 to 2008. The semiregular low-amplitude…”
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Superfast Line Profile Variability in the Spectra of Leo: New Results by Kholtygin, A. F., Ikonnikova, N. P., Dodin, A. V., Tsiopa, O. A.

“…The results of ultrahigh-time-resolution ( s) observations of the B1 Iab supergiant Leo with the 1.25-m telescope at the Crimean Astronomical Station of the…”
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Optical Monitoring of SS 433 in 2017–2021 by Cherepashchuk, A. M., Dodin, A. V., Postnov, K. A., Belinski, A. A., Burlak, M. A., Ikonnikova, N. P., Irsmambetova, T. R., Trushkin, S. A.

“…— The observed characteristics of the spectral and photometric variability of SS 433 are discussed based on the data for 2018–2021 and compared with earlier…”
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