The first results of observations of lunar occultations in different spectral ranges at the 6-m telescope of the SAO RAS  

作　　者：Ekaterina Shmaylova Vladimir Dyachenko Andrea Richichi Anatoly Beskakotov AleksandrMaksimov Arina Mitrofanova Yuri Balega 

机构地区：[1]Special Astrophysical Observatory,Russian Academy of Sciences,Nizhniy Arkhyz,Karachai-Cherkessian Republic,Russia 369167 [2]Astronomical Institute,St.Petersburg State University,Universitetskij Pr.28,Petrodvorets,198504,St.Petersburg,Russia [3]INAF-Osservatorio Astrofisico di Arcetri,Largo E.Fermi 5,50125,Firenze,Italy

出　　处：《Research in Astronomy and Astrophysics》2020年第11期231-234,共4页天文和天体物理学研究（英文版）

基　　金：The work was performed as part of the government contract of the SAO RAS approved by the Ministry of Science and Higher Education of the Russian Federation.The reported study was funded by RFBR(project No.20--32-70120);This research has made use of the SIMBAD database,operated at CDS,Strasbourg,France.

摘　　要：Observations by the method of lunar occultations at the 6-m telescope of the SAO RAS reach a resolution limit better than 1mas.We have devised a new method of observation,which allows obtaining the curves of lunar occultations simultaneously in different ranges of the visible part of the spectrum,and conducted the first observations using amodified optical system.In January 2019,applying the newmethod,the magnitude differences of the components of the binary star HD 36524 in the R and I bands were measured,which were 1.5 and 1.3mag,respectively,in good agreement with values calculated from the Gaia mission.According to the obtained data,it was determined that with this method it is possible to reach a signal-to-noise ratio of about 5–10 for stars of 10th magnitude.We discuss the applicability of the proposed optical scheme for the study of binary stars.

关 键 词：star BINARIES general instrumentation high angular resolution methods OBSERVATIONAL 

分 类 号：P111[天文地球—天文学]