Multiperiodic pulsations in the Be stars NW Ser and V1446 Aql

Author(s): Gutierrez-Soto, J.; Fabregat, J.; Suso, J.; et al.

Book Editor(s): Sterken, C; Aerts, C

Conference: Meeting on Astrophysics of Variable Stars Location: Pecs, HUNGARY Date: SEP 05-10, 2005

Source: Astrophysics of Variable Stars  Book Series: ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES   Volume: 349   Pages: 249-252   Published: 2006

We present accurate differential photometry of two Be stars: NW Ser and V1446 Aql. Both stars show rapid variations in amplitude, probably due to a beating phenomenon. Two additional significant frequencies are also detected in both stars. This would be the first unambiguous ground-based detection of photometric multiperiodicity in Be stars which may constitute a proof of the presence of non-radial pulsations (nrp) as the origin of the short-term variability. Further observations are planned in order to confirm the detected frequencies.