Abstract
We present the results of a study of the star HD34736. The spectropolarimetric observations carried out at the 6-m telescope showed the presence of a strong variable longitudinal magnetic field, exceeding −4500 G. The analysis of the Hipparcos photometry gives a set of possible periods of the brightness variability of the star, of which \(0_.^d 3603\) is preferred. The variable radial velocity of spectral lines of the star and some signatures of lines of at least one other component show that HD34736 is a binary short-period system. Modeling of the spectra allowed us to estimate the effective temperature T eff of the stars (13 700 and 11 500 K) and their projected rotational velocities υ sin i (73 and ≥ 90 km s−1). The analysis of all the available information about the star allows us to hypothesize that the object of study is a close, possibly interacting binary system.
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Original Russian Text © E.A. Semenko, I.I. Romanyuk, D.O. Kudryavtsev, I.A. Yakunin, 2014, published in Astrofizicheskij Byulleten, 2014, Vol. 69, No. 2, pp. 203–210.
The work is based on the observations obtained with the 6-m telescope of the SAO RAS.
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Semenko, E.A., Romanyuk, I.I., Kudryavtsev, D.O. et al. On discovery of strong magnetic field in the binary system HD34736. Astrophys. Bull. 69, 191–197 (2014). https://doi.org/10.1134/S1990341314020060
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DOI: https://doi.org/10.1134/S1990341314020060