The First Distant X-ray Quasars (\(\boldsymbol{z\sim 4}\)) among the Sources Discovered by the eROSITA Telescope of the SRG Orbital Observatory during a Deep Lockman Hole Survey G. A. KhorunzhevA. V. MeshcheryakovM. R. Gilfanov OriginalPaper 28 August 2020 Pages: 149 - 155
\(\boldsymbol{BVI}_{\boldsymbol{c}}\boldsymbol{g^{\prime}r^{\prime}i^{\prime}}\) Observations and Search for Evolutionary Changes in the Period of the Cepheid V1467 Cyg L. N. BerdnikovA. A. BelinskiiE. O. Mishin OriginalPaper 28 August 2020 Pages: 156 - 167
Superfast Line Profile Variability in the Spectra of \(\boldsymbol{\rho}\) Leo: New Results A. F. KholtyginN. P. IkonnikovaO. A. Tsiopa OriginalPaper 28 August 2020 Pages: 168 - 176
Activity of a Young Solar Analog—the Star with an Exoplanet DS Tuc I. S. SavanovE. S. Dmitrienko OriginalPaper 28 August 2020 Pages: 177 - 184
Controlled Motion of a Solar Sail in the Vicinity of a Collinear Libration Point D. V. ShymanchukA. S. ShmyrovV. A. Shmyrov OriginalPaper 28 August 2020 Pages: 185 - 192
Characterization of the ASTRONIRCAM Spectral Mode S. G. ZheltoukhovA. M. TatarnikovN. I. Shatsky OriginalPaper 28 August 2020 Pages: 193 - 203