Contents

Astronomy Letters

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Vol. 47, No. 11, 2021

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TRGB Distances to Galaxies Based on Hubble Space Telescope (HST) Images in One F814W Filter

N. A. Tikhonov p. 721  abstract

Transient AT2018cow: A Scenario with an Equatorial Disk

E. M. Urvachev, S. I. Blinnikov, and K. Nomoto p. 738  abstract

Study of the Influence of the Background Neutral Component on the Dynamics of the Envelope in Supernova Remnants

Yu. S. Sharova, S. I. Glazyrin, and V. A. Gasilov p. 746  abstract

Orbits of Visual Double Stars from P. Couteau’s Catalogue Determined with Gaia DR2 and Gaia EDR3 Data

A. E. Kisser and V. G. Krechet p. 754  abstract

Hydrodynamic Model of Decaying Radial Oscillations in RU Cam

Yu. A. Fadeyev p. 765  abstract

Evolution of Planetary Chaotic Zones in Planetesimal Disks

T. V. Demidova and I. I. Shevchenko p. 771  abstract

On the Definition of the Astrocentric Coordinates in the Planetary Problem

D. V. Mikryukov p. 782  abstract

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