KFU. Card publication. The binary star ?1Ori C: Orbital elements, evolutionary parameters and chemical composition

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THE BINARY STAR ?1ORI C: ORBITAL ELEMENTS, EVOLUTIONARY PARAMETERS AND CHEMICAL COMPOSITION

Form of presentation

Articles in international journals and collections

Year of publication

2021

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Authors, employees of KFU

Kolbin Aleksandr Ivanovich, author

Shimanskiy Vladislav Vladimirovich, author

Bibliographic description in the original language

Rzaev A.K, Shimansky V.V, Kolbin A.I., The binary star ?1Ori C: Orbital elements, evolutionary parameters and chemical composition//Monthly Notices of the Royal Astronomical Society. - 2021. - Vol.504, Is.3. - P.3787-3796.

Annotation

About 200 eshelle spectra obtained with high spectral resolution and S/N ratio at 1-m and 6-m SAO RAS telescopes were used to investigate the radial velocity variability with time in both components of the \1 Ori C binary system during its periastron passage. The quality of our spectra allowed us to find a methodical approach for the spectroscopic study of orbital motions of both components and to select lines suitable for this goal. The analysis has shown that the He II _ 4541, 5411 lines are suitable in case of the primary component and the Si III _ 4552 line — the secondary component. Radial velocities thus measured for both components from the spectra obtained over 20 years, along with the interferometric observations of relative positions of the components were used for construction of a combined 3D orbit of the system to derive its reliable orbital parameters. Orbital elements were determined with a good accuracy. For the dynamical distance we have found a value of about 3 = 415 6 pc, and for the system mass – «BHB = 44•8 4•5 «. A special method calculating the synthetic spectra in binaries taking into account the contribution of both components in their radiation is applied for the theoretical analysis of \1 Ori C observable spectra. Atmospheric parameters are refined for the primary and are for the first time determined for the secondary component. The chemical composition of \1 Ori C is determined, which coincides with the chemical composition of its surrounding Nebula.

Keywords

stars: individual: \1 Ori C ? binaries: early-type ? stars: fundamental parameters? stars: abundances.

The name of the journal

Monthly Notices of the Royal Astronomical Society

URL

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85107886032&doi=10.1093%2fmnras%2fstab1119&partnerID=40&md5=4b4ff9f956a410641be5bd3b84d54ac0

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=254540&p_lang=2

Full metadata record

Field DC	Value	Language
dc.contributor.author	Kolbin Aleksandr Ivanovich	ru_RU
dc.contributor.author	Shimanskiy Vladislav Vladimirovich	ru_RU
dc.date.accessioned	2021-01-01T00:00:00Z	ru_RU
dc.date.available	2021-01-01T00:00:00Z	ru_RU
dc.date.issued	2021	ru_RU
dc.identifier.citation	Rzaev A.K, Shimansky V.V, Kolbin A.I., The binary star ?1Ori C: Orbital elements, evolutionary parameters and chemical composition//Monthly Notices of the Royal Astronomical Society. - 2021. - Vol.504, Is.3. - P.3787-3796.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=254540&p_lang=2	ru_RU
dc.description.abstract	Monthly Notices of the Royal Astronomical Society	ru_RU
dc.description.abstract	About 200 eshelle spectra obtained with high spectral resolution and S/N ratio at 1-m and 6-m SAO RAS telescopes were used to investigate the radial velocity variability with time in both components of the \1 Ori C binary system during its periastron passage. The quality of our spectra allowed us to find a methodical approach for the spectroscopic study of orbital motions of both components and to select lines suitable for this goal. The analysis has shown that the He II _ 4541, 5411 lines are suitable in case of the primary component and the Si III _ 4552 line — the secondary component. Radial velocities thus measured for both components from the spectra obtained over 20 years, along with the interferometric observations of relative positions of the components were used for construction of a combined 3D orbit of the system to derive its reliable orbital parameters. Orbital elements were determined with a good accuracy. For the dynamical distance we have found a value of about 3 = 415 6 pc, and for the system mass – «BHB = 44•8 4•5 «. A special method calculating the synthetic spectra in binaries taking into account the contribution of both components in their radiation is applied for the theoretical analysis of \1 Ori C observable spectra. Atmospheric parameters are refined for the primary and are for the first time determined for the secondary component. The chemical composition of \1 Ori C is determined, which coincides with the chemical composition of its surrounding Nebula.	ru_RU
dc.language.iso	ru	ru_RU
dc.subject		ru_RU
dc.title	The binary star ?1Ori C: Orbital elements, evolutionary parameters and chemical composition	ru_RU
dc.type	Articles in international journals and collections	ru_RU