ASTRONOMY LETTERS-A JOURNAL OF ASTRONOMY AND SPACE ASTROPHYSICS

Formation of Hydrogen Emission Lines in the Magnetospheres of Young Stars

Search for Evolutionary Changes in the Periods of Cepheids: V1033 Cyg, a Classical Cepheid at the First Crossing of the Instability Strip

Optical Identifications of Galaxy Clusters Among Objects from the Second Planck Catalogue of Sunyaev–Zeldovich Sources

On the Properties of the Galactic Dust Layer within 700 pc of the Sun

Multiscale Analysis of the Instantaneous Eccentricity Oscillations of the Planets of the Solar System from 13 000 BC to 17 000 AD

Physical Parameters of the Asteroid 2017 VR12 from Radar and Photometric Observations

Spectrum of the Yellow Symbiotic Star LT Delphini before, during, and after the 2017 Outburst

Kinematic Parameters of the Stellar Velocity Field within 3 kpc of the Sun Based on the Gaia Data Release 2 with Radial Velocities Catalogue

The Relative Wavelength Independence of IR Time Lags in NGC 4151 during the Years 2010–2015

The Circumstellar Envelope of the Semiregular Variable Star V CVn

Populations of Sources in a Galactic Plane Survey with the ART-XC Telescope of the Spectrum-RG Observatory: Simulations

Investigation of the Outburst Activity of the Black Hole Candidate GRS 1739-278

Search for Evolutionary Changes in the Periods of Cepheid: DX Gem

The Mass Distribution of Transiting Exoplanets Corrected for Observational Selection Effects

Refinement of the Gnevyshev-Waldmeier Rule Based on a 140-Year Series of Observations

Influence of the Disk Wind on the Intrinsic Polarization of Young Stars

On the Origin of Solar Halo Coronal Mass Ejections

Large-Scale Magnetic Field Fragmentation in Flux-Tubes Near the Base of the Solar Convection Zone

The Energy Distribution of Nanoflares at the Minimum and Rising Phase of Solar Cycle 24

Kinematics of Hot Subdwarfs from the Gaia DR2 Catalogue

Spectral Properties of Heavily Obscured Seyfert Galaxies from the INTEGRAL All-Sky Survey

Circumbinary Planetary Systems in the Solar Neighborhood: Stability and Habitability

An Analytical Model for the Current Structure of the Magnetosheath Boundary in a Collisionless Plasma

A Water-Vapor Maser Flare in a High-Velocity Line toward W49N

Absorption in the 21-cm Line in Primordial Matter Density Fluctuations at the Stage of Their Nonlinear Compression

Updated Numerical Ephemerides of the Galilean Satellites of Jupiter

Observation of a Beam of Ultrarelativistic Particles and the Cherenkov Resonance

The Emission Source of Supernova ASASSN-15nx with a Prolonged Linear Light Curve

Simulation of a Hydrodynamic Stellar Wind from a Rapidly Rotating Star

Radial Pulsations of Stars at the Stage of the Final Helium Flash

UGC 1198: A Galaxy with an Inner Polar Disk/Ring

Features of the Gnevyshev-Waldmeier Rule for Various Lifetimes and Areas of Sunspot Groups

An Analytical Model for the Propagation of Thermal Runaway Electrons in Solar Flares

Influence of a Magnetic Field on Wave Motions in Thermally Unstable Photodissociation Regions

Detection of Methanol Maser Flares Near 19.9 and 20.9 GHz toward the Massive Source of Active Star Formation G358.931-0.030

The Seyfert Galaxy NGC 1275: Superfine Structure

Cool Spots on the Surface of the Active Giant PZ Mon

Optical Identification of New Candidates for Quasars at 3

Constraints on the Regimes of Electron Acceleration in Solar Flares

Search for Evolutionary Changes in the Periods of Cepheids: CF Cas

Radio Recombination Lines in Orion A at 8 and 13 mm: The Ionization Structure and Effective Temperature of the Star θ1 C Ori, the Electron Temperature of the Ionized Gas and Turbulence

Constraints on the collimated X-ray emission of SS 433 from the reflection on molecular clouds

Activity of the Red Dwarf FR Cnc from Observations with a Robotic IRT-20 Telescope at the Zvenigorod Observatory of INASAN

Long-Term Observations of the Blazar Mrk 501 with the GT-48 Cherenkov Telescope

Relation between X-ray and Sunyaev—Zeldovich Galaxy Cluster Mass Measurements

Unusual Light Structure in the NOAA 12109 Sunspot Umbra: Observations and Preliminary Results

Distances to 18 Dwarf Galaxies from the Arecibo Survey