TYC 1417-891-1 and TYC 1478-742-1: Eclipsing variable stars. The Gaia EDR3 and TESS photometric data

Gigoyan, K. K.; Gigoyan, K. S.; Kostandyan, G. R.

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Title: TYC 1417-891-1 and TYC 1478-742-1: Eclipsing variable stars. The Gaia EDR3 and TESS photometric data

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2579-2276

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60-67

Abstract:

Based on the TESS (Transiting Exoplanet Survey Satellite) phase dependent light curves, we confirm the eclipsing type variability nature for two G – type dwarfs: TYC 1417-891-1 and TYC 1478-742-1. Both objects show EA (Algol – type) light curves morphology. Orbital period for TYC 1417-891-1 is P ≈ 8.0 day and for TYC 1478-742-1, P ≈ 13.6 day. We present Gaia EDR3 and TESS catalogue important physical parameters as well as LAMOST spectra. Both objects are relatively bright and are located at a distance of 260.59 (±3.21) pc (TYC 1417-891-1) and 117.42 (±0.74) pc (TYC 1478-742-1). The TESS light curve of TYC 1478-742-1 show also flares as well. We discuss possible nature of the secondary and faint objects around these stars.

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pdf

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oai:arar.sci.am:361050

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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.

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Astronomy variables, eclipsing variables: TESS and Gaia data

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Aug 1, 2024

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Jul 10, 2023

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https://arar.sci.am/publication/390320

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Edition name	Date
Gigoyan, K. K., TYC 1417-891-1 and TYC 1478-742-1: Eclipsing variable stars. The Gaia EDR3 and TESS photometric data	Aug 1, 2024

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Title: TYC 1417-891-1 and TYC 1478-742-1: Eclipsing variable stars. The Gaia EDR3 and TESS photometric data

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