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2013•Bulletin of the Crimean Astrophysical ObservatoryOpen access

A study of two a-stars that are escaping from the Θ1 Ori C system

É. A. Vitrichenko, N. I. Bondar, Л. В. Бычкова, В. Д. Бычков

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Abstract

Two A-stars that are moving in the opposite directions with respect to a system with radial velocities +100 and −200 km/s were detected in the θ 1 Ori C system (HD 37022). These stars are considered to be escaping stars. An analysis of the high-quality spectra using the cross-correlation method allowed us to determine the physical characteristics of these stars: effective temperature, gravitational acceleration, relative and absolute luminosities, mass, chemical composition, and the locations of the stars on the Hertzsprung-Russell diagram.

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What this paper is about

Two A-stars that are moving in the opposite directions with respect to a system with radial velocities +100 and −200 km/s were detected in the θ 1 Ori C system (HD 37022). These stars are considered to be escaping stars. An analysis of the high-quality spectra using the cross-correlation method allowed us to determine the physical characteristics of these stars: effective temperature, gravitational acceleration, relative and absolute luminosities, mass, chemical composition, and the locations of the stars on the Hertzsprung-Russell diagram.

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Available abstract

Two A-stars that are moving in the opposite directions with respect to a system with radial velocities +100 and −200 km/s were detected in the θ 1 Ori C system (HD 37022). These stars are considered to be escaping stars. An analysis of the high-quality spectra using the cross-correlation method allowed us to determine the physical characteristics of these stars: effective temperature, gravitational acceleration, relative and absolute luminosities, mass, chemical composition, and the locations of the stars on the Hertzsprung-Russell diagram.

Key concepts: Stars, Physics, Astrophysics, Hertzsprung–Russell diagram, Diagram, Astronomy, Spectral line, Gravitation

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