335 citations · 994 across the 51 of their papers we have counts for
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Production, Processing and Consumption of the Dust in the Galaxy
George Gontcharov
The recent results obtained by the modern telescopes and spacecrafts allow us for the first time to compare directly the mass, spatial density and size distribution of the dust gra…
Systematic Error of the Gaia DR1 TGAS Parallaxes from Data for the Red Giant Clump
George Gontcharov
Based on the Gaia DR1 TGAS parallaxes and photometry from the Tycho-2, Gaia, 2MASS, and WISE catalogues, we have produced a sample of about 100 000 clump red giants within about 80…
Using the reduced proper motions of Tycho-2 stars with B-V from 0.75 to 1.25: Monte Carlo simulations
George Gontcharov
The stellar composition of the Tycho-2 Catalogue in the range has been reproduced through Monte Carlo simulations. For young and old stars of the red giant clump (R…
3D Stellar Reddening Map from 2MASS Photometry: An Improved Version
George Gontcharov
An improved version of the 3D stellar reddening map in a space with a radius of 1200 pc around the Sun and within 600 pc of the Galactic midplane is presented. As in the previous 2…
On the discrepancy between asteroseismic and Gaia DR1 TGAS parallaxes
George Gontcharov, Aleksandr Mosenkov
Recently, a deviation of the Gaia TGAS parallaxes from the asteroseismic ones for giants was found. We show that for parallaxes mas it can be explained by a selection…
Red Giant Clump in the Tycho-2 Catalogue
George Gontcharov
The Tycho-2 proper motions and Tycho-2 and 2MASS photometry are used to select 97348 red giant clump (RGC) stars. The interstellar extinction and photometric distance are calculate…