Zobrazeno 1 - 10
of 246
pro vyhledávání: '"Nefedyev, Y."'
Autor:
Pilyugin, L. S., Cedres, B., Zinchenko, I. A., Garcia, A. M. Perez, Lara-Lopez, M. A., Nadolny, J., Nefedyev, Y. A., Gonzalez-Otero, M., Vilchez, J. M., Puertas, S. Duarte, Martinez, R. Navarro
Off-centered spots of the enhanced gas velocity dispersion, s, are revealed in some galaxies from the MaNGA survey. Aiming to clarify the origin of the spots of enhanced s, we examine the distributions of the surface brightness, the line-of-sight vel
Externí odkaz:
http://arxiv.org/abs/2108.11264
Publikováno v:
A&A 646, A54 (2021)
The distribution of the gas velocity dispersion sigma across the images of 1146 MaNGA galaxies is analyzed. We find that there are two types of distribution of the gas velocity dispersion across the images of galaxies: (i) the distributions of 909 ga
Externí odkaz:
http://arxiv.org/abs/2012.12787
Autor:
Pilyugin, L. S., Grebel, E. K., Zinchenko, I. A., Lara-Lopez, M. A., Nefedyev, Y. A., Shulga, V. M.
Publikováno v:
A&A 639, A96 (2020)
We consider the circumnuclear regions of MaNGA galaxies. The spectra are classified as AGN-like, HII-region-like (or SF-like), and intermediate (INT) spectra according to their positions on the BPT diagram. There are the following four configurations
Externí odkaz:
http://arxiv.org/abs/2005.12744
Autor:
Pilyugin, L. S., Grebel, E. K., Zinchenko, I. A., Vilchez, J. M., Sakhibov, F., Nefedyev, Y. A., Berczik, P. P.
Publikováno v:
A&A 634, A26 (2020)
We derive the photometric, kinematic, and abundance characteristics of 18 star-forming MaNGA galaxies with fairly regular velocity fields and surface brightness distributions and with a large offset between the measured position angles of the major k
Externí odkaz:
http://arxiv.org/abs/1912.03233
Autor:
Zinchenko, I. A., Pilyugin, L. S., Sakhibov, F., Grebel, E. K., Just, A., Berczik, P., Nefedyev, Y. A., Vilchez, J. M., Shulga, V. M.
Publikováno v:
A&A 628, A55 (2019)
We derive the circular velocity curves of the gaseous and stellar discs of UGC 4056, a giant barred galaxy with an active galactic nucleus (AGN). We analyse UGC 4056 using the 2D spectroscopy obtained within the framework of the Mapping Nearby Galaxi
Externí odkaz:
http://arxiv.org/abs/1907.07998
Publikováno v:
A&A 623, A122 (2019)
We derive rotation curves, surface brightness profiles, and oxygen abundance distributions for 147 late-type galaxies using the publicly available spectroscopy obtained by the MaNGA survey. Changes of the central oxygen abundance (O/H)_0, the abundan
Externí odkaz:
http://arxiv.org/abs/1901.11001
Autor:
Pilyugin, L. S., Grebel, E. K., Zinchenko, I. A., Nefedyev, Y. A., Shulga, V. M., Wei, Han, Berczik, P. P.
We measured the emission lines in the spaxel spectra of MaNGA galaxies in order to determine the abundance distributions therein. It has been suggested that the strength of the low-ionization lines, R_2, N_2, and S_2 may be increased (relative to Bal
Externí odkaz:
http://arxiv.org/abs/1712.03418
Breaks in surface brightness profiles and radial abundance gradients in the discs of spiral galaxies
Publikováno v:
A&A 608, A127 (2017)
We examine the relation between breaks in the surface brightness profiles and radial abundance gradients within the optical radius in the discs of 134 spiral galaxies from the CALIFA survey. The distribution of the radial abundance (in logarithmic sc
Externí odkaz:
http://arxiv.org/abs/1709.00595
We examine the influence of the environment on the chemical abundances of late-type galaxies with masses of 10^9.1 M_sun - 10^11 M_sun using data from the Sloan Digital Sky Survey(SDSS). We find that the environmental influence on galactic chemical a
Externí odkaz:
http://arxiv.org/abs/1611.02502
Publikováno v:
In Advances in Space Research 15 October 2018 62(8):2355-2363
