Roman Uklein

Observations 2020

Photometric Reverberation Mapping Project for AGNs with 0.1 < z < 0.8 using the 1-meter telescope

Uklein R.I., Malygin E.A., Shablovinskaya E.S., Grokhovskaya A.A., Perepelitsyn A.E.

The goal of the project is to determine characteristic sizes of the broad-line region in active galactic nuclei based on photometric reverberation mapping and to refine the dependence R(BLR)-λL(λ) (5100A). Until now, the majority of studies in this field considered the Local Universe (z~0.1). The novelty of this project is in using a sample to obtain and analyze homogeneous data in the redshift range of 0.1 to 0.8. An advantage of the galaxy sample is its availability for monitoring during the whole year.
We intend to:
a) carry out observations of galaxies in mid-band filters using one-meter telescopes;
b) develop software and determine the time lag for wide-emission-line light curves in regard to the UV continuum;
c) improve the relation between luminosity and broad-line region sizes in AGNs up to z~0.8.
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Spectroscopy of giant LSB-galaxies at the 6-m telescope

Saburova A.S., Kasparova A.V., Katkov I.Yu., Uklein R.I.

The project involves research for kinematics and properties of the stellar population in giant low surface brightness (LSB) galaxies. The scenario of formation of LSB galaxies is still remains unclear. Kasparova et al. (2014) suggested that low surface density and large scale disk giant LSB galaxies are due to low concentration of dark halos. But verification of this assumption requires additional observational data. Thus, for constructing a dynamic model and determining halo parameters of dark matter require radial velocity profiles in the central region (to fix the contribution of the bulge). Moreover, the dispersion of the velocities of the stars will give an independent estimate of the masses of the disks, which will make it possible to understand whether they have an anomalous stellar composition with high content of low-mass stars (see Saburova, 2011).