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1987•Monthly Notices of the Royal Astronomical SocietyOpen access

Periodic variations in PHL 227*

R. Haefner, R. Schoembs

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Abstract

Spectroscopic and photometric observations of the recently discovered UX UMa star PHL 227 are presented. An orbital period of 0.1356±0.0006 day results from the radial velocities of the Hα and Hβ emission lines. The light curve shows pronounced variations presumably of irregular nature. Coherent rapid oscillations with a period of 19.6 s were detected.

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Spectroscopic and photometric observations of the recently discovered UX UMa star PHL 227 are presented. An orbital period of 0.1356±0.0006 day results from the radial velocities of the Hα and Hβ emission lines. The light curve shows pronounced variations presumably of irregular nature. Coherent rapid oscillations with a period of 19.6 s were detected.

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Available abstract

Spectroscopic and photometric observations of the recently discovered UX UMa star PHL 227 are presented. An orbital period of 0.1356±0.0006 day results from the radial velocities of the Hα and Hβ emission lines. The light curve shows pronounced variations presumably of irregular nature. Coherent rapid oscillations with a period of 19.6 s were detected.

Key concepts: Physics, Astrophysics, Light curve, Radial velocity, Orbital period, Astronomy, Period (music), Emission spectrum

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