New Photometric and Spectroscopic Observations of the Eclipsing Binary V2080 Cygni

• Autorzy: Dimitrov W. , Kamiński K. , Bąkowska K. , Kamińska M. K. , Tokarek J. , Pawłowski M. , Boneva D. , Bartczak P. , Kwiatkowski T. , Schwarzenberg-Czerny A.

Identyfikatory

DOI

10.32023/0001-5237/72.1.4

• Języki publikacji: EN

Abstrakty

EN

We present new spectroscopic and photometric measurements of the eclipsing binary V2080 Cyg. It is a detached system with similar components and an orbital period of 4.9 d. We collected spectroscopic data with two instruments, 1.88 m DDO telescope equipped with Cassegrain spectrograph and 0.5 m PST1 connected to a fiber-fed echell\'e spectrograph. We collected 127 measurements for each component, which significantly increase the number of available radial velocity measurements for the V2080 Cyg system. Obtained masses of the eclipsing components are M₁=1.189± 0.007 and M₂=1.138±0.007 M_☉. We also collected a multicolor photometry. The three-band light curves obtained together with the radial velocity data enabled us to calculate the model of the system. New estimations of the orbital inclination and radii of the components were computed. We obtained as well new times of minima. The O-C diagrams indicate variation, which requires more recent data to be confirmed. The possible existence of a third body could cause a light-time effect in the system. In addition, we analyze the Gaia mission results. V2080 Cyg A has three visual companions. However, according to Gaia parallaxes and proper motions, they cannot be dynamically connected with the eclipsing binary and therefore are background stars.

Słowa kluczowe

EN

Stars: individual: V2080 Cyg; binaries: eclipsing

• Wydawca: Copernicus Foundation for Polish Astronomy
• Czasopismo: Acta Astronomica
• Rocznik: 2022
• Tom: Vol. 72, No. 1
• Strony: 55--67
• Opis fizyczny: Bibliogr. 16 poz., rys., tab., wykr.

Twórcy

autor

Dimitrov W.

• Astronomical Observatory Institute, Faculty of Physics, Adam Mickiewicz University, ul. Słoneczna 36, 60-286 Poznań, Poland

autor

Kamiński K.

• Astronomical Observatory Institute, Faculty of Physics, Adam Mickiewicz University, ul. Słoneczna 36, 60-286 Poznań, Poland

autor

Bąkowska K.

• Institute of Astronomy, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, ul. Grudziądzka 5, 87-100 Toruń, Poland

autor

Kamińska M. K.

• Astronomical Observatory Institute, Faculty of Physics, Adam Mickiewicz University, ul. Słoneczna 36, 60-286 Poznań, Poland

autor

Tokarek J.

• Astronomical Observatory Institute, Faculty of Physics, Adam Mickiewicz University, ul. Słoneczna 36, 60-286 Poznań, Poland

autor

Pawłowski M.

• Astronomical Observatory Institute, Faculty of Physics, Adam Mickiewicz University, ul. Słoneczna 36, 60-286 Poznań, Poland

autor

Boneva D.

• Space Research and Technology Institute, Bulgarian Academy of Sciences, Acad. Georgi Bonchev Str., Bl. 1, 1113 Sofia, Bulgaria

autor

Bartczak P.

• Astronomical Observatory Institute, Faculty of Physics, Adam Mickiewicz University, ul. Słoneczna 36, 60-286 Poznań, Poland

autor

Kwiatkowski T.

• Astronomical Observatory Institute, Faculty of Physics, Adam Mickiewicz University, ul. Słoneczna 36, 60-286 Poznań, Poland

autor

Schwarzenberg-Czerny A.

• Nicolaus Copernicus Astronomical Center, ul. Bartycka 18, 00-716 Warsaw, Poland

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