Properties and nature of Be stars. 17. V360 Lac = HD 216200 is a B3e + F9IV: binary J/A+A/324/965 J/A+A/324/965 UBV photometry of V360 Lac Properties and nature of Be stars. 17. V360 Lac = HD 216200 is a B3e + F9IV: binary G Hill P Harmanec K Pavlovski H Bozic P Hadrava P Koubsky J Ziznovsky Astron. Astrophys. 324 965 1997 1997A&A...324..965H Binaries, spectroscopic Photometry, UBV Stars, Be binaries: eclipsing binaries: spectroscopic stars: emission-line, Be stars: fundamental parameters stars: individual (V360 Lac) An analysis of an extensive collection of photometric and spectroscopic observations of the little studied bright Be star V360 Lac lead to the following main conclusions: (1) V360 Lac is a binary system consisting of a B3e primary and a F9IV secondary which probably fills the Roche lobe and losses mass towards the primary. Radial-velocity curves of both components were obtained. (2) The light variations arise from superposition of variations on at least three time scales: phase-locked orbital brightness and colour changes with two minima; sinusoidal variation with a 322.24^d^ period and low-amplitude rapid changes with a possible period of 1.6738^d^. (3) A tentative solution of the B and V light curves which assumes the semi-detached configuration and presence of a disk around the primary, combined with the orbital solution, leads to preliminary basic physical elements of the system which are consistent with the radiative properties of the binary components.
V360 Lac14 LacHD 21620022 50 21.7+41 57 13
 V360 Lac: individual homogenized Johnson UBV observations from several stations HJD Heliocentric Julian date d w weight of the data point --- Vmag Johnson V magnitude mag Bmag Johnson B magnitude mag Umag Johnson U magnitude mag B-V Johnson B-V index mag U-B Johnson U-B index mag X Air mass of the observation --- dX Air mass difference between var. and comp. --- HD HD number of the comparison star used --- Obs Numerical code identifying sources of data number=1 Individual observing stations are denoted by their numerical codes used in the Ondrejov photometric data archives as follows: 1 ... Hvar 3 ... Skalnate Pleso 5 ... Lowell 10... Kitt Peak National Observatory 13... Mt Kobau 33... Lick 46... Heidelberg 47... Akita --- Patricia Bauer CDS 1997Mar07Petr Harmanec <hec@sunstel.asu.cas.cz> J_A+A_324_965.xml