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pro vyhledávání: '"Rastorguev, Alexey S."'
Calibration of the period-luminosity relation (PLR) for Cepheids has always been one of the biggest goals of stellar astronomy. Among a considerable number of different approaches, the Baade-Becker-Wesselink (BBW) method stands in the foreground as o
Externí odkaz:
http://arxiv.org/abs/1911.13102
Autor:
Rastorguev, Alexey S., Lazovik, Yaroslav A., Zabolotskikh, Marina V., Berdnikov, Leonid N., Gorynya, Natalia A.
A new version of the Baade--Becker--Wesselink (hereafter BBW) method is proposed, based on direct spectroscopic measurements of effective temperatures of 45 northern Cepheids, made in different pulsating phases. By comparing the temperature estimates
Externí odkaz:
http://arxiv.org/abs/1911.10413
Autor:
Chumak, Oleg V., Rastorguev, Alexey S.
Kinetic processes in fractal stellar media are analysed in terms of the approach developed in our earlier paper (Chumak \& Rastorguev, 2015) involving a generalization of the nearest neighbour and random force distributions to fractal media. Diffusio
Externí odkaz:
http://arxiv.org/abs/1604.04449
Autor:
Chumak, Oleg V., Rastorguev, Alexey S.
The nearest neighbor distribution (Chandrasekhar 1943) is generalized to fractal stellar systems.For such systems an asymptotic distribution of the magnitude of large random forces and a formula for the effective mean interparticle spacing are derive
Externí odkaz:
http://arxiv.org/abs/1511.03818
Autor:
Rastorguev, Alexey S., Dambis, Andrey K., Zabolotskikh, Marina V., Berdnikov, Leonid N., Gorynya, Natalia A.
The BBW method remains one of most demanded tool to derive full set of Cepheid astrophysical parameters. Surface brightness version of the BBW technique was preferentially used during last decades to calculate Cepheid radii and to improve PLC relatio
Externí odkaz:
http://arxiv.org/abs/1212.3173
Autor:
Glushkova, Elena V., Zabolotskikh, Marina V., Koposov, Sergey E., Spiridonova, Olga I., Leonova, Svetlana I., Vlasyuk, Valery V., Rastorguev, Alexey S.
The BVRcIc CCD photometry in the fields of six open clusters toward the Perseus spiral arm is presented. These data along with JHKs magnitudes taken from 2MASS catalog, have been used to determine cluster's ages, distances and color excesses. In addi
Externí odkaz:
http://arxiv.org/abs/1211.3541
We propose a new version of the Baade--Becker--Wesselink technique, which allows one to independently determine the colour excess and the intrinsic colour of a radially pulsating star, in addition to its radius, luminosity, and distance. It is consid
Externí odkaz:
http://arxiv.org/abs/1011.3305
Autor:
Malkov Oleg Yu., Rastorguev Alexey S.
Publikováno v:
Open Astronomy, Vol 26, Iss 1, Pp 62-63 (2017)
Here we give a brief overview on the eighth annual conference on Modern Stellar Astronomy held in the Ural FederalUniversity (Ekaterinbourg, Russia) in June 2017, to commemorate the 100th birthday of Prof. K. Barkhatova (1917-1990).
Externí odkaz:
https://doaj.org/article/b6a5b07b9daa45a4b93f7731575ae9c0
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