157 citations · 461 across the 43 of their papers we have counts for
14 papers · 1 filter
Optical light curves of light-weight supermassive black holes produced by the Zwicky Transient Facility Forced Photometry Service
Mariia Demianenko, Igor Chilingarian, Kirill Grishin +4
In this paper, we present an algorithm to correct optical light curves obtained using The Zwicky Transient Facility Forced Photometry Service and its application to the analysis of…
Fast interactive web-based data visualizer of panoramic spectroscopic surveys
Ivan Katkov, Damir Gasymov, Joseph D. Gelfand +7
Panoramic IFU spectroscopy is a core tool of modern observational astronomy and is especially important for galaxy physics. Many massive IFU surveys, such as SDSS MaNGA (10k target…
Observational insights on the formation scenarios of giant low surface brightness galaxies
Anna Saburova, Igor Chilingarian, Anastasia Kasparova +4
Giant low surface brightness galaxies (gLSBGs) with the disk radii of up to 130 kpc represent a challenge for currently accepted theories of galaxy formation and evolution, because…
RCSEDv2: homogenization of multi-wavelength photometric data
Victoria Toptun, Igor Chilingarian, Ivan Katkov +6
RCSEDv2 (https://rcsed2.voxastro.org/), the second Reference Catalog of Spectral Energy Distributions of galaxies includes the largest homogeneously processed photometric dataset f…
RCSEDv2: Open-source web tools for visualization of imaging and spectral data
Vladislav Klochkov, Ivan Katkov, Igor Chilingarian +6
We present a set of open-source web tools for visualization of spectral and imaging data, which we use in the second Reference Catalogue of Spectral Energy Distributions of galaxie…
RCSEDv2: the largest database of galaxy properties from a homogeneously processed multi-wavelength dataset
Igor Chilingarian, Sviatoslav Borisov, Vladimir Goradzhanov +6
The Reference Catalog of Spectral Energy Distributions of 800,000 galaxies (RCSED) includes the results of uniform re-processing of 800,000 SDSS DR7 galaxies at redshifts $0.007<z<…
RCSEDv2: Processing and analysis of 4+ million galaxy spectra
Vladimir Goradzhanov, Igor Chilingarian, Evgenii Rubtsov +6
RCSEDv2 (https://rcsed2.voxastro.org/), the second Reference Catalog of Spectral Energy Distributions of galaxies, provides the largest homogeneously analyzed collection of optical…
RCSEDv2: analytic approximations of k-corrections for galaxies out to redshift
Anastasia Kasparova, Igor Chilingarian, Sviatoslav Borisov +6
To compare photometric properties of galaxies at different redshifts, we need to correct fluxes for the change of effective rest-frame wavelengths of filter bandpasses, called -…
Hybrid minimization algorithm for computationally expensive multi-dimensional fitting
Evgenii Rubtsov, Igor Chilingarian, Ivan Katkov +3
Multi-dimensional optimization is widely used in virtually all areas of modern astrophysics. However, it is often too computationally expensive to evaluate a model on-the-fly. Typi…
Observing, calibrating and reducing near-infrared imaging mosaics
Kirill Grishin, Igor Chilingarian
In near-infrared bands, co-adding and tiling of astronomical imaging datasets require a sufficiently high calibration quality (flat fielding, background subtraction). Here we prese…
Multi-segment and Echelle stellar spectra processing issues and how to solve them
Sviatoslav Borisov, Igor Chilingarian, Evgenii Rubtsov +7
High-quality stellar spectra are in great demand now - they are the most important ingredient in the stellar population synthesis to study galaxies and star clusters. Here we descr…
Transforming gas-rich low-mass disky galaxies into ultra-diffuse galaxies by ram pressure
Kirill Grishin, Igor Chilingarian, Anton Afanasiev +4
Faint extended elliptically-shaped ultra-diffuse galaxies and slightly brighter and more compact dwarf elliptical and lenticular stellar systems are common in galaxy clusters. Thei…
Approximate analytical description of the high latitude extinction
Alexei Nekrasov, Kirill Grishin, Dana Kovaleva +1
The distribution of visual interstellar extinction has been mapped in selected areas over the Northern sky, using available LAMOST DR5 and Gaia DR2/EDR3 data. was model…
Search for gas accretion imprints in voids: II. The galaxy Ark 18 as a result of a dwarf-dwarf merger
E. S. Egorova, O. V. Egorov, A. V. Moiseev +3
The low-mass low-surface brightness (LSB) disc galaxy Arakelian 18 (Ark 18) resides in the Eridanus void and because of its isolation represents an ideal case to study the formatio…