1. The Fragmentation in a Protoplanetary Disk and the Properties of the Resultant Self-Gravitating Clumps

   • Chunjian Liu
   • Zhen Yao
   • Lianhua Tian

   OriginalPaper 15 November 2018 Pages: 713 - 723

2. The Initial Mass Spectra of Astronomical Objects

   • B. M. Shustov
   • A. V. Tutukov

   OriginalPaper 15 November 2018 Pages: 724 - 732

3. The Stellar Population and Orbit of the Galactic Globular Cluster Palomar 3

   • M. E. Sharina
   • M. V. Ryabova
   • A. S. Gorban

   OriginalPaper 15 November 2018 Pages: 733 - 746

4. Spectroscopic Monitoring of SS 433. Stability of Parameters of the Kinematic Model over 40 Years

   • A. M. Cherepashchuk
   • V. F. Esipov
   • A. A. Belinskii

   OriginalPaper 15 November 2018 Pages: 747 - 763

5. The Spectral Type of the Ionizing Stars and the Infrared Fluxes of HII Regions

   • A. P. Topchieva
   • M. S. Kirsanova
   • A. M. Sobolev

   OriginalPaper 15 November 2018 Pages: 764 - 773

6. Observational Manifestations of the Precessional Wave in the Accretion Disk of a Cataclysmic Variable Star

   • P. V. Kaigorodov
   • D. V. Bisikalo

   OriginalPaper 15 November 2018 Pages: 774 - 780

7. Turbulence in the Accretion Disks in Semi-Detached Binary Systems with Various Component-Mass Ratios

   • E. P. Kurbatov
   • A. M. Fateeva
   • D. V. Bisikalo

   OriginalPaper 15 November 2018 Pages: 781 - 786

8. Frequency-Dependent Core Shifts in Ultracompact Quasars

   • P. A. Voitsik
   • A. B. Pushkarev
   • A. V. Ipatov

   OriginalPaper 15 November 2018 Pages: 787 - 813

9. Spots and Activity of Am Stars

   • I. S. Savanov

   OriginalPaper 15 November 2018 Pages: 814 - 822