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New late-type stars found in the BAO Plate Archive

Kostandyan, G. R.; Abrahamyan, H. V.; Paronyan, G. M. +1 more

The BAO Plate Archive low-resolution spectral plate centered \alpha = +04h; \delta = +240 is analyzed to find new late-type stars. 25 new late-type stars have been detected. We have performed cross-correlations with GAIA DR3, USNO-B1.0, 2MASS, AllWISE, IRAS PSC/FSC, AKARI and SDSS. For new detected objects, we present luminosity classes estimated …

Semi-detached double-lined eclipsing binaries with Gaia DR3 data

Malkov, O. Yu.; Grinenko, A. D.; Sachkov, A. M.

Semi-detached double-lined eclipsing binaries (SD DLEB) play an important role in our understanding of basic properties of interacting binaries. We have collected data on semi-detached systems with available light and radial velocity curve solutions, and have compiled the most comprehensive list of SD DLEB, containing astrophysical and orbital par…

First Byurakan Spectral Survey. Late-Type Stars. Dwarfs

Gigoyan, K. K.; Gigoyan, K. S.; Kostandyan, G. R. +5 more

A total of 18 lists of the First Byurakan Survey of Late-Type Stars (FBS LTS) were published between 1990 and 2016. The stars were found on FBS low-dispersion spectral plates. A systematic search and selection were carried out on a surface of ∼16 000 deg^2 on almost the whole area of the FBS. Since 2007, all FBS low-resolution spectral plates have…

Gaia EDR3 Data For Three Young Stellar Objects

Gigoyan, K. K.; Gigoyan, K. S.; Azatyan, N. M.

We present Gaia Early Data Release 3 (GaiaEDR3) high accurate astrometric and photometric data and also Catalina Sky Survey (CSS) phase-dependent light curves for three Young Stellar Objects (YSO). They are LRL245, 2MASSJ04300424+3533238, and CVSO592. These tree YSOs are presented as periodic variables in the Catalina Surveys Data Release-1 (CSDR1…