A Search for Photometric Variability in the Central Star of NGC6543

Details A Search for Photometric Variability in the Central Star of NGC6543 A Search for Photometric Variability in the Central Star of NGC6543

Apr 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994mnras.267.1053b&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Vol. 267, NO. 4/APR15, P.1053, 1994

Astronomy and Astrophysics

Astronomy

4

Planetary Nebulae: Individual: Ngc 6543

Scientific paper

We present intermediate-band CCD observations of HD 164963, the central star of the planetary nebula NGC 6543. The observations were obtained on four nights spread over an interval of approximately a year with the 0.9-m James Gregory Telescope and CCD camera, employing an intermediate-band continuum filter (λc=5300 Å). They show no evidence for photometric variability of the central star on a time-scale similar to that suggested by the radial-velocity variations found by Acker at a level greater than 0.04 mag, despite the fact that it is known to exhibit spectral variations at both optical and ultraviolet wavelengths. These observations suggest that HD 164963 is a member of the recently identified class of objects known as `wind variables'.

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