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Information × Registration Number 0213U008145, 0113U008053 , R & D reports Title New methods for determining the masses of the central black holes in active galactic nuclei popup.stage_title Head N.G. Pulatova, Registration Date 24-12-2013 Organization Scientific-research institute "Crimean asrophysical observatory" of Taras Shevchenko National University of Kyiv popup.description2 This work is the part of investigation dedicated to studying internal properties of a host galaxy, connected with its nuclear activity. For this goal we used the sample of 2MIG isolated AGNs in the Northern Sky, obtained through cross-correlation of catalogue 2MASS selected isolated galaxies (2MIG) and the latest version of catalogue of Quasars and AGNs Veron-Cetty, 2010. The sample of 2MIG selected AGNs consist of 36 galaxies and is limited by: declination > -15 degree, K_s < 12.0^m, radial velocity <15000 km/s (z<0.05). We classi?ed the 2MIG isolated AGNs into several categories as well as searched the literature and databases to reveal multi-wavelength properties. Because of our sample is limited to z<0.1, whereas the AGN population peak is toward to z ? 2 ? 3, our conclusions are related to the local isolated AGNs. Most of the 2MIG isolated host galaxies with AGNs belong to S0-Sc types where about 40% are of Sb type. After applying NED search for neighbouring galaxies with the separated distances 750 kpc and radial velocities range ± 500 km/s, we found that 10 isolated host galaxies (mostly Scd and Im types) have 20 faint companions, including 8 companions at the distances from 500 to 750 kpc. We found a weak nuclear activity in the faint companions for CGCG248-019, UGC 01757, MCG-02-57-008, NGC5231, UGC10120, NGC7479, IC2227, UGC06398, and UGC06769, which is connected mostly with starbursts. To determine estimations on central black hole (BH) mass we used archival data from HyperLeda (stellar velocity dispersion, maximum rotational velocity of the gas) as well as SDSS spectra (SDSS, data release 9). Estimations of central black hole mass were done for 29 2MIG isolated AGNs. We found, isolated AGNs contain smaller black hole by mass comparing with other Seyfert galaxies with known BH mass. Thus, studying of the processes around supermassive BH can make a significant contribution to the development of new powerful energy sources. Product Description popup.authors Борман Г.О. Назаров С.В. С.Г. Сергєєв popup.nrat_date 2020-04-02 Close