Zobrazeno 1 - 10
of 387
pro vyhledávání: '"Ikonnikova, N. A."'
An analysis of high-resolution ($R\sim48\,000$) optical spectrum of hot (B1Ibe) post-AGB star LS 4331 (IRAS 17381-1616) is presented. The detailed identification of the observed absorption and emission features in the wavelength range 3700-9200 \r{A}
Externí odkaz:
http://arxiv.org/abs/2406.06240
Autor:
Dodin, A. V., Potanin, S. A., Burlak, M. A., Cheryasov, D. V., Ikonnikova, N. P., Lamzin, S. A., Safonov, B. S., Shatskii, N. I., Tatarnikov, A. M.
Publikováno v:
A&A, 684, L25, 2024
A strong global magnetic field of young low-mass stars and a high accretion rate are the necessary conditions for the formation of collimated outflows (jets) from these objects. But it is still unclear whether these conditions are also sufficient. We
Externí odkaz:
http://arxiv.org/abs/2404.06491
Autor:
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.
We present the results of multicolour $UBVR_{\text{C}}I_{\text{C}}JHK$ photometry, spectroscopic analysis and spectral energy distribution (SED) modelling for the post-AGB candidate IRAS 02143+5852. We detected Cepheid-like light variations with the
Externí odkaz:
http://arxiv.org/abs/2403.20066
Autor:
Kumar, R., Moharana, A., Piridi, S., Pradhan, A. C., Hełminiak, K. G., Ikonnikova, N., Dodin, A., Szczerba, R., Giersz, M., Ojha, D. K., Samal, M. R.
Publikováno v:
A&A 685, L6 (2024)
We report a new hot post-asymptotic giant branch (PAGB) star in the Galactic globular cluster (GC) E3, which is one of the first of the identified PAGB stars in a GC to show a binary signature. The star stands out as the brightest source in E3 in the
Externí odkaz:
http://arxiv.org/abs/2403.12907
Autor:
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.
We present the results of photometric and spectroscopic monitoring campaigns of the changing look AGN NGC~2617 carried out from 2016 until 2022 and covering the wavelength range from the X-ray to the near-IR. The facilities included the telescopes of
Externí odkaz:
http://arxiv.org/abs/2308.04855
Autor:
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 particular, are of crucial importance to identify the common properties for the stars of given
Externí odkaz:
http://arxiv.org/abs/2307.10796
Autor:
Belinski, A., Burlak, M., Dodin, A., Emelyanov, N., Ikonnikova, N., Lamzin, S., Safonov, B., Tatarnikov, A.
We present the results of our new observations of the young binary ZZ Tau with a circumbinary disc. The system was found to consist of two coeval (age $<2$ Myr) classical T Tauri stars with the total mass $0.86 \pm 0.09$ M$_\odot$, orbital period $46
Externí odkaz:
http://arxiv.org/abs/2206.14154
Autor:
Arkhipova, V. P., Ikonnikova, N. P., Shenavrin, V. I., Burlak, M. A., Tatarnikov, A. M., Tsvetkov, D. Yu., Belinskii, A. A., Pavlyuk, N. N., Shugarov, S. Yu.
We present the results of a new stage of the long-term photometric study of FG Sge which is a quickly evolving central star of the planetary nebula Hen 1-5. Our new observations carried out on the SAI MSU telescopes in the optical ($BVR_CI_C$) and in
Externí odkaz:
http://arxiv.org/abs/2206.02493
Autor:
Ikonnikova, N. P., Shaposhnikov, I. A., Esipov, V. F., Burlak, M. A., Arkhipova, V. P., Dodin, A. V., Potanin, S. A., Shatsky, N. I.
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 measured the intensities of more than 50 nebular emission lines in the spe
Externí odkaz:
http://arxiv.org/abs/2111.00491
Autor:
Mereminskiy, I. A., Dodin, A. V., Lutovinov, A. A., Semena, A. N., Arefiev, V. A., Atapin, K. E., Belinski, A. A., Burenin, R. A., Burlak, M. V., Eselevich, M. V., Fedotieva, A. A., Gilfanov, M. R., Ikonnikova, N. P., Krivonos, R. A., Lapshov, I. Yu., Lyapin, A. R., Medvedev, P. S., Molkov, S. V., Postnov, K. A., Pshirkov, M. S., Sazonov, S. Yu., Shakura, N. I., Shtykovsky, A. E., Sunyaev, R. A., Tatarnikov, A. M., Tkachenko, A. Yu., Zheltoukhov, S. G.
Publikováno v:
A&A 661, A32 (2022)
Context: During the ongoing all-sky survey, the Mikhail Pavlinsky ART-XC telescope on board the SRG observatory should discover new X-ray sources, many of which can be transient. Here we report on the discovery and multiwavelength follow-up of a pecu
Externí odkaz:
http://arxiv.org/abs/2107.05588