========================================================================== J/A+A/477/907 Beta Cephei stars in the ASAS-3 data. I. (Pigulski+, 2008) The following files can be converted to FITS (extension .fit .fgz or .fiZ) stars.dat lc1.dat ========================================================================== Query from: http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=J/A+A/477/907 ==========================================================================
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Beginning of ReadMe : J/A+A/477/907 Beta Cephei stars in the ASAS-3 data. I. (Pigulski+, 2008) ================================================================================ Beta Cephei stars in the ASAS-3 data. I. Long-term variations of periods and amplitudes. Pigulski A., Pojmanski G. <Astron. Astrophys. 477, 907 (2008)> =2008A&A...477..907P ================================================================================ ADC_Keywords: Stars, early-type - Stars, OB - Stars, variable - Surveys Keywords: stars: early-type - stars: oscillations - surveys Abstract: We analyse V-filter photometry of 41 known Beta Cephei-type stars. The ASAS-3 photometry is combined with the archival data, if available, to determine long-term stability of periods and amplitudes of excited modes. We detected amplitude changes in three Beta Cephei stars, BW Cru, V836 Cen, and V348 Nor. Period changes were found in KK Vel and V836 Cen. Our analysis shows that intrinsic period changes are more common among multiperiodic stars, apparently because they are caused by some kind of mode interaction. In addition, we found new modes for seven stars, and for ten others we provide new solutions or remove ambiguities in the detected frequencies. One candidate hybrid Beta Cephei/SPB star, HD 133823, is discovered. Description: Time-series V-filter ASAS-3 photometry for 41 known Beta Cephei stars is presented. Out of the original aperture photometry, we chosen that which had the smallest errors of magnitudes. In addition, measurements made in different fields were accounted for zero point differences, corrected for second-order extinction effects and detrended.