Zobrazeno 1 - 10
of 68
pro vyhledávání: '"Tugay, A. V."'
We present a study of $1347$ galaxies at $z<0.35$ with detected nuclear X-ray emission and optical emission line diagnostics in the Baldwin-Phillips-Terlevich (BPT) diagram. This sample was obtained by cross-matching the X-ray Multi-Mirror Mission Ob
Externí odkaz:
http://arxiv.org/abs/2406.03254
Publikováno v:
IAU Symposium 367/VIRTUAL Education and Heritage in the Era of Big Data in Astronomy, December 8-12, 2020
LLAGN are very important objects for studying as they are found in a large fraction of all massive galaxies. Nevertheless this topic needs more investigation as fraction of LLAGN in all AGN are much more higher than fraction of researches dedicated t
Externí odkaz:
http://arxiv.org/abs/2012.13518
Autor:
Sadova, V. A., Tugay, A. V.
Publikováno v:
Advances in Astronomy and Space Physics, 2015, Volume 5, Pages 79-83
X-ray luminosities and spectral indices of 97 bright Seyfert 1 galaxies from XMM archive are analyzed in this article. Distribution of these values is random so we conclude that the model of emission should be at least two-parametric. Within the merg
Externí odkaz:
http://arxiv.org/abs/1812.04388
Publikováno v:
Odessa Astronomy Publications, 2018, Volume 31, Pages 47-51
Considering increasing requirements to the coordinates measurement precision by the end of XX century International Astronomical Union commenced implementation of the new astrometric system ICRF (International Celestial Reference Frame). This quasi-i
Externí odkaz:
http://arxiv.org/abs/1812.04337
Publikováno v:
Odessa Astronomy Publications, 2016, Volume 29, Pages 34-36
X-ray counterparts for 35 galaxy clusters contained in the PF catalog of galaxy clusters and groups were found in XMM-Newton archive. 22 ones (all from ACO catalogue) have extended elliptic X-ray haloes appropriate for determination of orientation. P
Externí odkaz:
http://arxiv.org/abs/1812.04376
Autor:
Tugay, A. V.
Publikováno v:
Odessa Astronomy Publications, 2017, Volume 30, Pages 51-53
While galaxy cluster catalogs were compiled many decades ago, other structural elements of cosmic web are detected at definite level only in the newest works. For example, extragalactic filaments were described by velocity field and SDSS galaxy distr
Externí odkaz:
http://arxiv.org/abs/1812.04366
Autor:
Tugay, A. V., Shevchenko, S. Yu.
Publikováno v:
Odessa Astronomy Publications, 2017, Volume 30, Pages 45-47
In our work we considered orientations of bright X-ray halos of the galaxy clusters (mainly Abell clusters). 78 appropriate clusters were selected using data from Xgal sample of extragalactic objects in XMM-Newton observation archive. Position angles
Externí odkaz:
http://arxiv.org/abs/1812.04349
Autor:
Voitsekhovskiy, V. V., Tugay, A. V.
Publikováno v:
Odessa Astronomy Publications, 2018, Volume 31, Pages 52-55
Large-scale structure of Universe includes galaxy clusters connected by filaments. Voids occupy the rest of cosmic volume. The search of any dependencities in filament structure can give answer to more general questions about origin of structures in
Externí odkaz:
http://arxiv.org/abs/1812.04317
Publikováno v:
Odessa Astronomy Publications, 2018, Volume 31, Pages 42-46
Components of large-scale structure (LSS) of Universe includes galaxy clusters, walls, filaments, groups and field galaxies. The question of spatial organization of all these components remains open despite of a number of recently developed methods o
Externí odkaz:
http://arxiv.org/abs/1812.04313
Autor:
Tugay, A. V., Shihov, S. L.
We built r-band surface brightness profiles by SDSS data for 16 Seyfert galaxies observed in Crimean Astrophysical Observatory. Obtained profiles can be used for finding more accurate lightcurves for these galaxies.
Comment: 3 pages, 2 figures,
Comment: 3 pages, 2 figures,
Externí odkaz:
http://arxiv.org/abs/1410.2975