Journal or Publication Title:

Բյուրականի աստղադիտարանի հաղորդումներ: Երևանի աստղադիտարանի բյուլետեն = Сообщения Бюраканской обсерватории. Бюллетень ереванской Астрономической обсерватории = Contributions from the Burakan observatory. Bulletin of the Erevan astronomical observatory

Date of publication:

2025

Volume:

72

Number:

1

ISSN:

2579-2276

Coverage:

23-29

Abstract:

In this work we used the catalog of spectral and luminosity classes of 6,037 stars in the direction of the Galaxy anticenter and selected a subsample list of 2067 stars covering whole B spectral and luminosity classes including peculiar B stars. We used TESS Quick-Look Pipeline (QLP) light curves for all those stars from the Mikulski Archive for Space Telescopes (MAST) database in FITS format tables and processed all of them using interactive python code. To avoid contamination of variability from neighboring stars we analyzed light curves per pixel for each star and extracted a light curve free of any contamination. For pulsation eclipsing binary stars we estimated frequency spectra using Lomb-Scargle Periodograms and excluded it from a source light curve to get a pure transit signal. We used than Transit Least Squares algorithm to determine the periods and epochs of eclipsing events and built the phase curves. As a result we are presenting 23 new detached eclipsing binary stars, 11 of which have high eccentricity and 12 of them show pulsation signals.

Format:

pdf

Identifier:

oai:arar.sci.am:425910

General note:

Communications of the Byurakan Astrophysical Observatory (ComBAO) is a peer-reviewed scientific journal, which publishes research in observational and theoretical astronomy/astrophysics and presents recent advances in these fields. It is being published by the NAS RA V. Ambartsumian Byurakan Astrophysical Observatory (BAO) in English in electronic form. The journal publishes original papers, review papers, brief reports, book reviews, special communications, observational and theoretical results in various fields of astronomy and related sciences, and some editorial notes, including anniversaries and obituaries. Under the heading “Legacy”, the renewed magazine will republish some old articles of high value in English. The heading “Guest articles” will bring to the attention of readers the articles of researchers who are not employees of BAO. ComBAO was founded in 1946 and regularly published in 1946-1990. However, the publication was interrupted because of the economic situation after the disintegration of the Soviet Union in 1991.

Location of original object:

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