33 citations · 174 across the 11 of their papers we have counts for
11 papers
Galaxy rotation curve based on RGB stars from the Gaia DR3 catalogue
P. N. Fedorov, A. M. Dmytrenko, V. S. Akhmetov +8
In this paper, we construct a detailed circular velocity curve of the Milky Way out to 20 kpc based on the radial component of the Jeans equation in cylindrical coordinates, assumi…
A large topographic feature on the surface of the trans-Neptunian object (307261) 2002 MS measured from stellar occultations
F. L. Rommel, F. Braga-Ribas, J. L. Ortiz +201
This work aims at constraining the size, shape, and geometric albedo of the dwarf planet candidate 2002 MS4 through the analysis of nine stellar occultation events. Using multichor…
Liverpool-Maidanak monitoring of the Einstein Cross in 20062019. I. Light curves in the optical bands and microlensing signatures
L. J. Goicoechea, B. P. Artamonov, V. N. Shalyapin +8
Quasar microlensing offers a unique opportunity to resolve tiny sources in distant active galactic nuclei and study compact object populations in lensing galaxies. We therefore sea…
Spectroscopic follow-up of double quasar candidates
V. N. Shalyapin, A. V. Sergeyev, L. J. Goicoechea +1
We report the results of an optical spectroscopic follow-up of four double quasar candidates in the Sloan Digital Sky Survey (SDSS) database. SDSS J1617+3827 is most likely a lense…
Discovery of the optically bright, wide separation double quasar SDSS J1442+4055
Alexey V. Sergeyev, Alexander P. Zheleznyak, Vyacheslav N. Shalyapin +1
Optically bright, wide separation double (gravitationally lensed) quasars can be easily monitored, leading to light curves of great importance in determining the Hubble constant an…
Microlensing variability in FBQ 0951+2635: short-timescale events or a long-timescale fluctuation?
V. N. Shalyapin, L. J. Goicoechea, E. Koptelova +7
We present and analyse new R-band frames of the gravitationally lensed double quasar FBQ 0951+2635. These images were obtained with the 1.5m AZT-22 Telescope at Maidanak (Uzbekista…