Stellar Parameters And Ha Line Profile Variability Of Be Stars In The Besos Survey

The Be phenomenon is present in about 20$\\%$ of the B-type stars. Be stars\nshow variability on a broad range of timescales, which in most cases is related\nto the presence of a circumstellar disk of variable size and structure. For\nthis reason a time resolved survey is highly desirable in order to understand\nthe mechanisms of disk formation which are still poorly understood. In\naddition, a complete observational sample would improve the statistical\nsignificance of the study of the stellar and disk parameters. The "Be Stars\nObservation Survey" (BeSOS) is a survey containing reduced spectra obtained\nusing the echelle spectrograph PUCHEROS with a spectral resolution of 17000 in\nthe range of 4260-7300 $\\text{\\AA}$. BeSOS's main objective is to offer\nconsistent spectroscopic and time resolved data obtained with one instrument.\nThe user can download or plot the data and get the stellar parameters directly\nfrom the website. We also provide a star-by-star analysis based on photometric,\nspectroscopic and interferometric data as well as general information about the\nwhole BeSOS sample. Recently, BeSOS led to the discovery of a new Be star HD\n42167 and facilitated study of the V/R variation of HD 35165 and HD 120324, the\nsteady disk of HD 110335 and the Be shell status of HD 127972. Optical spectra\nused in this work, as well as the derived stellar parameters are available\nonline in \\url{http://besos.ifa.uv.cl}.\n