Search Results - "Sakhibullin, N. A"

Type Ia supernovae 2014J and 2011fe at the nebular phase by Bikmaev, I. F., Chugai, N. N., Sunyaev, R. A., Churazov, E. M., Khamitov, I. M., Sakhibullin, N. A., Galeev, A., Akhmetkhanova, A. E.

“…We present our observations and the results of our analysis of the nebular spectra for two nearby type Ia supernovae (SN 2014J and SN 2011fe). For the overall…”
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Modeling the optical radiation of the precataclysmic variable SDSS J212531-010745 by Shimansky, V. V., Borisov, N. V., Nurtdinova, D. N., Solovyeva, Yu. N., Sakhibullin, N. A., Spiridonova, O. I.

“…Optical observations are analyzed to derive a set of basic parameters for the precataclysmic variable star SDSS J212531-010745, whose primary is a PG1159-type…”
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On the reconstruction of the surface structure of the spotted stars by Kolbin, A. I., Shimansky, V. V., Sakhibullin, N. A.

“…We have developed and tested a light-curve inversion technique for photometric mapping of spotted stars. The surface of a spotted star is partitioned into…”
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Comparative analysis of photometric variability of TT ARI in the years 1994–1995 and 2001, 2004 by Belova, A. I., Suleimanov, V. F., Bikmaev, I. F., Khamitov, I. M., Zhukov, G. V., Senio, D. S., Belov, I. Yu, Sakhibullin, N. A.

“…We present the results of photometric observations of a bright cataclysmic variable TT Ari with an orbital period of 0.13755 days. CCD observations were…”
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Investigation of the Disk of the Be Star in the High-Mass X-ray Binary IGR J21343+4738 by Nikolaeva, E. A., Bikmaev, I. F., Irtuganov, E. N., Gorbachev, M. A., Suslikov, M. V., Gumerov, R. I., Sakhibullin, N. A.

“…We present the results of our long-term photometric and spectroscopic monitoring with the 1.5-m telescope RTT-150 for the optical counterpart of the high-mass…”
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Observational restrictions on sodium and aluminium abundance variations in evolution of the galaxy by Menzhevitski, V. S., Shimanskaya, N. N., Shimansky, V. V., Sakhibullin, N. A.

“…In this paper we construct and analyze the uniform non-LTE distributions of the aluminium ([Al/Fe]-[Fe/H]) and sodium ([Na/Fe]-[Fe/H]) abundances in the sample…”
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Non-LTE effects in Na I spectral lines in stellar atmospheres by Mashonkina, L I, Shimanskii, V V, Sakhibullin, N A

“…The paper examines the statistical equilibrium of Na I in stellar atmospheres with a wide range of parameters: T^sub eff^=4000-12500 K, logg=0.0-4.5, and heavy…”
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SRGe J194401.8+284452—an X-ray Cataclysmic Variable in the Field of the Gamma-Ray Source 4FGL J1943.9+2841 by Kolbin, A. I., Karpova, A. V., Suslikov, M. V., Bikmaev, I. F., Gilfanov, M. R., Khamitov, I. M., Shibanov, Yu. A., Zyuzin, D. A., Beskin, G. M., Plokhotnichenko, V. L., Gutaev, A. G., Karpov, S. V., Lyapsina, N. V., Medvedev, P. S., Sunyaev, R. A., Kirichenko, A. Yu, Gorbachev, M. A., Irtuganov, E. N., Gumerov, R. I., Sakhibullin, N. A., Shablovinskaya, E. S., Malygin, E. A.

“…We have carried out multiwavelength spectroscopic and photometric studies of the object SRGe J194401.8+284452 (2RXS J194401.4+284456, XMMSL2 J194402.0+284451,…”
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PG 1316+678: A young pre-cataclysmic binary with weak reflection effects by Shimansky, V. V., Borisov, N. V., Bikmaev, I. F., Sakhibullin, N. A., Shimanskaya, N. N., Spiridonova, O. I., Irtuganov, E. N.

“…The PG 1316+678 star is classified as a pre-cataclysmic binary, as is evidenced by its photometric and spectroscopic observations. Its orbital period is…”
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SRGe J214919.3+673634—a Candidate for AM Her Variables Discovered by the eROSITA Telescope onboard the Spectrum–Roentgen–Gamma Orbital Observatory by Bikmaev, I. F., Kolbin, A. I., Shimansky, V. V., Khamitov, I. M., Irtuganov, E. N., Nikolaeva, E. A., Sakhibullin, N. A., Gumerov, R. I., Burenin, R. A., Gilfanov, M. R., Zaznobin, I. A., Krivonos, R. A., Medvedev, P. S., Meshcheryakov, A. V., Sazonov, S. Yu, Sunyaev, R. A., Khorunzhev, G. A., Moiseev, A. V., Malygin, E. A., Shablovinskaya, E. S., Zheltoukhov, S. G.

“…We present the results of the optical identification, classification, and analysis of our photometric and spectroscopic observations of the X-ray transient…”
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Optical Identification and Spectroscopic Redshift Measurements of 216 Galaxy Clusters from the SRG/eROSITA All-Sky Survey by Zaznobin, I. A., Burenin, R. A., Belinski, A. A., Bikmaev, I. F., Gilfanov, M. R., Dodin, A. V., Dodonov, S. N., Eselevich, M. V., Zheltoukhov, S. F., Irtuganov, E. N., Kotov, S. S., Krivonos, R. A., Lyskova, N. S., Malygin, E. A., Maslennikova, N. A., Medvedev, P. S., Meshcheryakov, A. V., Moiseev, A. V., Oparin, D. V., Potanin, S. A., Postnov, K. A., Sazonov, S. Yu, Safonov, B. S., Sakhibullin, N. A., Starobinsky, A. A., Suslikov, M. V., Sunyaev, R. A., Tatarnikov, A. M., Uskov, G. S., Uklein, R. I., Khabibullin, I. I., Khamitov, I. M., Khorunzhev, G. A., Churazov, E. M., Shablovinskaya, E. S., Shatsky, N. I.

“…We present the results of the optical identification and spectroscopic redshift measurements of 216 galaxy clusters detected in the SRG/eROSITA all-sky X-ray…”
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Spectroscopic Redshift Determination for a Sample of Distant Quasars Detected by the SRG Observatory Based on RTT-150 Observations. I by Bikmaev, I. F., Irtuganov, E. N., Nikolaeva, E. A., Sakhibullin, N. A., Gumerov, R. I., Sklyanov, A. S., Glushkov, M. V., Borisov, V. D., Burenin, R. A., Zaznobin, I. A., Krivonos, R. A., Lyapin, A. R., Medvedev, P. S., Meshcheryakov, A. V., Sazonov, S. Yu, Sunyaev, R. A., Khorunzhev, G. A., Gilfanov, M. R.

“…Results of the first spectroscopic observations at the 1.5-m Russian–Turkish telescope for the X-ray sources discovered by the eROSITA telescope onboard the…”
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Spectroscopic Redshift Determination for a Sample of Distant Quasars Detected by the SRG Observatory Based on RTT-150 Observations. II by Bikmaev, I. F., Irtuganov, E. N., Nikolaeva, E. A., Sakhibullin, N. A., Gumerov, R. I., Sklyanov, A. S., Glushkov, M. V., Khamitov, I. M., Borisov, V. D., Burenin, R. A., Zaznobin, I. A., Krivonos, R. A., Lyapin, A. R., Medvedev, P. S., Meshcheryakov, A. V., Sazonov, S. Yu, Sunyaev, R. A., Khorunzhev, G. A., Gilfanov, M. R.

“…Results of the spectroscopic observations at the 1.5-m Russian–Turkish telescope for another group of 12 X-ray sources discovered by the eROSITA telescope…”
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Analysis of optical light curves for the components of the gravitationally lensed quasar SBS 1520+530 based on observations with the 1.5-m RTT-150 telescope in 2001-2005 by KHAMITOV, I. M, BIKMAEV, I. F, ASLAN, Z, SAKHIBULLIN, N. A, VLASYUK, V. V, ZHELEZNYAK, A. P, ZAKHAROV, A. F, DAMBIS, A

“…We present the R ^sub c^-band light curves for components A and B of the gravitationally lensed quasar SBS 1520+530 obtained during 2001-2005 with the 1.5-m…”
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Spectroscopic study of the optical counterpart to the fast X-ray transient IGR J17544-2619 based on observations at the 1.5-m RTT-150 telescope by Bikmaev, I. F., Nikolaeva, E. A., Shimansky, V. V., Galeev, A. I., Zhuchkov, R. Ya, Irtuganov, E. N., Melnikov, S. S., Sakhibullin, N. A., Grebenev, S. A., Sharipova, L. M.

“…We present the results of our long-term photometric and spectroscopic observations at the Russian–Turkish RTT-150 telescope for the optical counterpart to one…”
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Observations of the optical afterglow from GRB 060526 with the RTT-150 telescope by Khamitov, I M, Burenin, R A, Bikmaev, I F, Sakhibullin, N A, Pavlinsky, M N, Sunyaev, R A, Aslan, Z

“…Multicolor photometric observations of the optical afterglow from GRB 060526 with the Russian-Turkish 1.5-m RTT-150 telescope (Mount Bakyrlytepe, Turkey) are…”
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Supersoft X-ray sources. parameters of stellar atmospheres by Ibragimov, A A, Suleimanov, V F, Vikhlinin, A, Sakhibullin, N A

“…ROSAT spectra of 11 supersoft X-ray sources are approximated with theoretical spectra obtained in LTE models for the atmospheres of hot white dwarfs with line…”
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Multipassband photometric mapping of three fast rotating stars: HII 1883, AP 86 and AP 226 by Kolbin, A.I., Sakhibullin, N.A., Gabdeev, M.M.

“…The analysis of multipassband photometry was carried out for three rapidly rotating stars: HII 1883, AP 86 and AP 226. Two different approaches were used for…”
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The nature of the unique precataclysmic variable V664 Cas with two-peaked Balmer lines in its spectrum by Shimanskii, V V, Borisov, N V, Sakhibullin, N A, Surkov, A E

“…We analyze photometric and spectroscopic observations of the close binary system V664 Cas. All the characteristics of its radiation are consistent with the…”
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Non-LTE effects in Mg I lines for various types of stars by Shimanskaya, N N, Mashonkina, L I, Sakhibullin, N A

“…We have performed a detailed statistical-equilibrium analysis based on a 49-level model of the magnesium atom for the atmospheres of stars of various spectral…”
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