Zobrazeno 1 - 10
of 60
pro vyhledávání: '"A N, Pastukhova"'
Autor:
Alemiye M Yacob, Leonid N Berdnikov, Elena N Pastukhova, Alexei Y Kniazev, Patricia A Whitelock
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 516:2095-2111
In this study, we investigate the period changes of eight short-period Type II Cepheids of the BL Her subtype, i.e., with periods in the 1-4 day range. The $O-C$ diagrams for these stars are constructed using all suitable observational data from grou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6a392f43f24a5d7fa95c8cabd5c32b98
https://doi.org/10.1093/mnras/stac2167
https://doi.org/10.1093/mnras/stac2167
Publikováno v:
Odessa Astronomical Publications, Vol 18, Iss 0, Pp 87-89 (2017)
The variability of the type C semi-regular (SRC) M3.5 Ia supergiant variable BC Cyg is examined with reference to measurements of its photographic B magnitude derived from 866 archival plates in the Harvard and Sternberg collections and eye estimates
Externí odkaz:
https://doaj.org/article/45635cd0e8cf46e587cd802b7643cf8a
Autor:
Nikolay N. Samus, Elena V. Kazarovets, Olga V. Durlevich, Natalia N. Kireeva, Elena N. Pastukhova, Anton V. Khruslov
Publikováno v:
Open Astronomy, Vol 30, Iss 1, Pp 122-126 (2021)
We briefly outline the history of the General Catalogue of Variable Stars (GCVS) and the New Catalogue of Suspected Variable Stars (NSV catalogue). Recently, we have completed a revision of the NSV catalogue. Positional information was checked for al
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ad9f8dc982c0669ee9329eef3f5ce3ff
https://doaj.org/article/2d7b4f051d3a4b6e9aa013a34f0168ee
https://doaj.org/article/2d7b4f051d3a4b6e9aa013a34f0168ee
Publikováno v:
Cuestiones Políticas. 39:933-941
Through a documentary methodology, the article analyzes the main theoretical, practical, and problematic legal issues related to the functioning of the counter-majority mechanisms existing in the Russian local self-government system. The study propos
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ad89345cb620681b828aa1523992c334
https://doi.org/10.46398/cuestpol.3970.57
https://doi.org/10.46398/cuestpol.3970.57
Autor:
A. A. Belinskii, E. O. Mishin, N. I. Shatskii, M. A. Burlak, N. P. Ikonnikova, E. N. Pastukhova, L. N. Berdnikov
Publikováno v:
Astronomy Letters. 47:430-441
For both periods of the double-mode classical Cepheid AS Cas we have constructed $$O-C$$ diagrams spanning a time interval of 132 years. The $$O-C$$ diagrams have the shape of parabolas, which has allowed us for the first time to determine the quadra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::16c97c258d78953a676129995a99928e
https://doi.org/10.1134/s1063773721060013
https://doi.org/10.1134/s1063773721060013
Autor:
E. N. Pastukhova, L. N. Berdnikov
Publikováno v:
Astronomy Letters. 47:252-261
The reduction of all the available photometry for the Cepheid SU Sct has allowed its $$O-C$$ diagram spanning a time interval of 60 years to be constructed. Six abrupt changes in the period have been detected. The pulsation stability test proposed by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ab6c0511839e6909bbf6bf5eca813f13
https://doi.org/10.1134/s1063773721040010
https://doi.org/10.1134/s1063773721040010
Autor:
M. A. Burlak, E. N. Pastukhova, A. A. Belinskii, E. O. Mishin, N. I. Shatskii, N. P. Ikonnikova, L. N. Berdnikov
Publikováno v:
Astronomy Letters. 47:28-42
For two classical Cepheids, CEa Cas and CEb Cas, members of the open cluster NGC 7790, we have constructed $$O-C$$ diagrams spanning a time interval of 125 years. The $$O-C$$ diagrams have the shape of parabolas, which has allowed us for the first ti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b2e2d1a50219dd2ffdac6bb743337848
https://doi.org/10.1134/s1063773721010023
https://doi.org/10.1134/s1063773721010023
Publikováno v:
Astronomy Letters. 46:630-644
The reduction of all the available photometry for the Cepheid CC Lyr has allowed its $$O-C$$ diagram spanning a time interval of 124 years to be constructed. The data obtained provide evidence for the existence of large random fluctuations in the per
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dbe9d86b5d15784605048d708ebedc38
https://doi.org/10.1134/s1063773720090029
https://doi.org/10.1134/s1063773720090029
Autor:
E. N. Pastukhova, L. N. Berdnikov
Publikováno v:
Astronomy Letters. 46:235-244
The reduction of all the available photometry for the Cepheid ET Vul has allowed its $$O-C$$ diagram spanning a time interval of 130 years to be constructed. This has made it possible to calculate for the first time the rate of evolutionary decrease
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f406e264e01dce1bdfced851e1faf939
https://doi.org/10.1134/s1063773720040027
https://doi.org/10.1134/s1063773720040027
Autor:
E. N. Pastukhova, E. O. Mishin, N. P. Ikonnikova, M. A. Burlak, L. N. Berdnikov, A. A. Belinskii
Publikováno v:
Astronomy Letters. 46:156-167
$$BVI_{c}g^{\prime}r^{\prime}i^{\prime}$$ observations of the classical Cepheid V1467 Cyg have been obtained with the 60-cm telescope at the Caucasus Mountain Observatory of the SAI MSU. Invoking all of the available photometry has allowed an $$O-C$$
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8cc640d9f2753cf3d6baa5373cd02a88
https://doi.org/10.1134/s1063773720030019
https://doi.org/10.1134/s1063773720030019