MHD Waves and instabilities in the collisionless space plasma
N.S.Dzhalilov, S.Sh.Huseinov

6

About heating of the solar corona by MHD waves
S.G.Mamedov, D.M.Kuli-Zade, Z.F.Aliyeva, K.I.Alisheva

16

The preliminary results of investigation of enigmatic star beta LYRAE
J.N.Rustamov, A.F.Abdulkarimova

27

Non-stationary processes in the atmosphere of the supergiant HD 208501 (B8 Ib)
A.M.Khalilov, A.R.Hasanova, A.B.Masimova

43

Magnetic fields of HAeBe stars: interaction with environs
A.Kholtygin, O.Tsiopa, E.Makarenko, M.Obolentseva

48

Investigation of the pre-cataclysmic variable NSVS 14256825
N.R.Deminova, V.V.Shimanskii, I.F.Bikmaev, N.V.Borisov, M.M.Gabdeev

53

Spectral monitoring of the herbig AE star HD 179218
U.Z.Bashirova, H.N.Adigozalzade, N.Z.Ismailov, S.Alishov

59

Periodical variations of radial velocities and profiles of the sodium lines in the spectrum of the supergiant 89 HER (F2 Ibe)
A.M.Khalilov, A.R.Hasanova, G.M.Hajiyeva

71

Summary light curve analysis of the T tauri type star AS205
U.S.Veliyev, N.Z.Ismailov

75

Aspectral variability of the supergiant star HD21389
A.Sh.Baloglanov

78

High velocity absorption in the spectra of CH Cyg in 2017
Kh.M.Mikailov, R.T.Mammadov, I.A.Alakbarov, O.V.Khalilov

82

Spectral investigations of the symbiotic star CH CYGNI in 2018
Kh.M.Mikailov, A.J.Orujova, R.T.Mammadov, I.A.Alakbarov, O.V.Khalilov

91

Fractal modeling of sanimeter time sequences of solar radio radiation
Sh.Sh.Huseynov, S.Sh.Huseynov

103

Interaction of supernova remnants with the surrounding stellar population
A.I.Asvarov, G.B.Mamedkhanova

110

Photometric modeling of the polar V808 Aur
A.I.Kolbin, N.A.Serebriakova, A.I.Ikhsanova, M.M.Gabdeev

115

CCD-photometry of the T tauri star DI CEP
Z.Vidadi, N.Z.Ismailov

120

On the possible relationship between small Solar System bodies and the Planet X waves
A.Guliyev, R.Guliyev

126

Glories on venus: existence conditions and the effect of size and shape variations
D.V.Petrov, E.A.Zhuzhulina, Z.F.Aliyeva

133

Polarimetric Investigations of the Moon and Planets at Abastumani Astrophysical Observatory
R.A.Chigladze

138

Using the dos method for calculating the spectral brightnes coefficient of the surface of mars
F.I.Ismailov

142

On the variation of absorption lines in the spectrum of the late SG star HD 199478
Sh.K.Ismayilova, N.Z.Ismailov

147

Photometric Observations Of The Symbiotic Star Ch Cyg In 2018
Kh.M. Mikailov , R.T. Mammadov , N.I. Gulmaliyev

154

Chemical Abundance Analysis Of The Red Giant Star HD 94264 (46LMi)
B. Civelekler

160

Elemental Abundance Analysis Of Am Star 15 Vul (HD 189849)
M.T. Çay, I. Bikmaev, I.H. Çay, B. Civelekler

165

Spectroscopic Study Of The Ulx-Pulsar Ngc 7793 P13
E.A. Nikolaeva, S.N. Fabrika, A.S. Vinokurov, Yu.N. Solovieva

169

Tne Evolution Of The Photometric Parametrs Of Short Periodic Comet 2p/Encke And Solar Activity
A.G. Safarov, D.K. Ayubov

172

Study Of The Polidispers Structure Of Stratospheric Aerosol Of The Giant Planets P13
A.A. Atai, F.I. Ismailov

175

Geometric Interpretation Of Wigner Spin Rotation
B.A.Rajabov

182

The remarkable post-maximum behavior of the Changing look Seyfert Galaxy NGC 2617
N.A.Huseynov , V.L.Oknyansky, Kh.M.Mikailov, V.M.Lipunov, V.I.Metlov, N.I.Taghiyeva

185