Zobrazeno 1 - 10
of 138
pro vyhledávání: '"Volkov, I. M."'
Autor:
Volkov, I. M., Kravtsova, A. S.
We report long-termed UBVRIRcIc photometry of the highly eccentric 12.04 day detached eclipsing binary V490 Sct (V =13.1, B9.5+A0, e = 0.40), which we use to determine its relative and absolute parameters. The absolute masses, radii, and temperatures
Externí odkaz:
http://arxiv.org/abs/2109.03925
We found that the known spectroscopic binary and variable BU~CMi = HD65241 ($V$=6.4-6.7 mag, Sp~=~A0~V) is a quadruple doubly eclipsing 2+2 system. Both eclipsing binaries are detached systems moving in an eccentric orbits: pair "A" with the period $
Externí odkaz:
http://arxiv.org/abs/2107.09116
Autor:
Kolesnikov, D. A., Shakura, N. I., Postnov, K. A., Volkov, I. M., Bikmaev, I. F., Irsmambetova, T. R., Staubert, R., Wilms, J., Irtuganov, E., Golyshev, P. Yu., Shugarov, S. Yu., Nikolenko, I. V., Trunkovsky, E. M., Schönherr, G., Schwope, A., Klochkov, D.
The X-ray binary Her X-1 consists of an accreting neutron star and the optical component HZ Her. The 35-day X-ray superorbital variability of this system is known since its discovery in 1972 by the Uhuru satellite and is believed to be caused by forc
Externí odkaz:
http://arxiv.org/abs/2009.07181
Autor:
Tsvetkov, D. Yu., Baklanov, P. V., Potashov, M. Sh., Oknyansky, V. L., Mikailov, Kh. M., Huseynov, N. A., Alekberov, I. A., Khalilov, O. V., Pavlyuk, N. N., Metlov, V. G., Volkov, I. M., Shugarov, S. Yu.
We present optical photometric observations of SN 2018aoq from 2 to 100 days after explosion, and 7 spectra at epochs from 11 to 71 days. The light curves and spectra are typical for SNe II-P. As previously reported, SN 2018aoq appears to be of inter
Externí odkaz:
http://arxiv.org/abs/1904.06586
Publikováno v:
Contributions of the Astronomical Observatory Skalnate Pleso 48 (2018) 536-553
We aim to determine the absolute parameters of the components of a poorly studied Algol-type eclipsing binary V2247 Cyg. The data analysis is based on our numerous precise UBVRcIc photometric observations and low resolution spectra. The photometric s
Externí odkaz:
http://arxiv.org/abs/1809.00884
Autor:
Tsvetkov, D. Yu., Shugarov, S. Yu., Volkov, I. M., Pavlyuk, N. N., Vozyakova, O. V., Shatsky, N. I., Nikiforova, A. A., Troitsky, I. S., Troitskaya, Yu. V., Baklanov, P. V.
We present UBVRI photometry of the supernova 2017eaw in NGC 6946, obtained in the period from May 14 until December 7, 2017. We derive dates and magnitudes of maximum light in the UBVRI bands and the parameters of the light curves. We discuss colour
Externí odkaz:
http://arxiv.org/abs/1801.00340
Akademický článek
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Autor:
Goranskij, V. P., Barsukova, E. A., Valeev, A. F., Tsvetkov, D. Yu., Volkov, I. M., Metlov, V. G., Zharova, A. V.
We present medium-resolution spectroscopy and multicolor photometry for the optical transient PSN J09093496+3307204 (SN 2015bh) in the galaxy NGC 2770, which has transferred into the supernova phase. The observations were carried out between February
Externí odkaz:
http://arxiv.org/abs/1609.00731
We present CCD BVRI photometry for PSN J07285387+3349106 in NGC 2388 collected from 2015 February 17 until March 17. Decaying by 3.6 mag in the R band in the first 20 days post-maximum, this object is among the fastest supernovae observed to date. Th
Externí odkaz:
http://arxiv.org/abs/1504.01864
Autor:
Volkov, I. M.1 (AUTHOR) hwp@yandex.ru
Publikováno v:
Astronomy Reports. Apr2023, Vol. 67 Issue 4, p320-335. 16p.
