000002762 001__ 2762
000002762 005__ 20160701171710.0
000002762 0247_ $$2DOI$$a10.1007/978-3-642-29630-7_47
000002762 037__ $$aASTROimport-919
000002762 100__ $$aSemaan, T.
000002762 245__ $$aA Pulsational Study of a Sample of CoRoT Faint Be Stars
000002762 260__ $$c2013
000002762 520__ $$aWe present an intensive study of a sample of 12 Be stars in the first exo-planetary fields of the CoRoT mission. The aim is to understand the short-term variability in Be stars. We use both spectroscopic and photometric data: VLT-GIRAFFE spectra to derive the fundamental parameters and CoRoT light curves to search for low-amplitude frequencies. This allows us to locate the stars in the HR diagram and compare their positions in the instability strip with those of other pulsating B stars. From VLT-GIRAFFE observations we determined the stellar parameters by fitting the observed spectra with non-LTE stellar atmosphere models. The observed spectra were corrected for veiling effects due to circumstellar material and for rotational effects. We estimated the rotational frequency using the corrected fundamental parameters. For the CoRoT light curves, we determined all significant frequencies and compared the main frequencies with the rotational frequency. We also investigated the variation of the frequencies and amplitudes with time and, in particular, during outbursts. This is the first time that a statistical study with space data has been performed for Be stars. Our study suggests that rotational modulation is not the cause of short-term photometric variability in Be stars. 
000002762 700__ $$a Gutiérrez-Soto, J.
000002762 700__ $$a Frémat, Y.
000002762 700__ $$a Hubert, A. M.
000002762 700__ $$a Martayan, C.
000002762 700__ $$a Zorec, J.
000002762 773__ $$c261$$pStellar Pulsations: Impact of New Instrumentation and New Insights$$v31$$y2013
000002762 85642 $$ahttp://esoads.eso.org/abs/2013ASSP...31..261S
000002762 905__ $$apublished in
000002762 980__ $$aNONREF