The photometric variability of the Be star NW Serpentis

Details The photometric variability of the Be star NW Serpentis The photometric variability of the Be star NW Serpentis

Aug 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999a%26a...348..553p&link_type=abstract

Astronomy and Astrophysics, v.348, p.553-556 (1999)

Astronomy and Astrophysics

Astrophysics

3

Stars: Early-Type, Stars: Emission-Line, Be, Stars: Variables: General

Scientific paper

{NW Ser} is a bright (V = 6.1 - 6.2) active Be star which is known to vary photometrically on a time scale of hours to days. Using both Hipparcos and ground-based photometry, and using light curve, autocorrelation, power spectrum analysis and phase dispersion minimalization techniques, we have concluded that the period is close to 0.46d - a period typical of stars of this type, and in good agreement with the value of 0.488d, recently determined by Hubert & Floquet from Hipparcos data. It is possible that the period is near twice this value, but the evidence is not strong. We also find a period of about 5d. from both the ground-based and Hipparcos data.

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