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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