Title

The cool ZZ Ceti star PG 2303+243: observations and analysis of variability in 2004

Abstract

PG 2303+243 is a cool DA variable (also called ZZ Ceti) star with a rich pulsation spectrum and variable amplitudes. A mini-campaign involving six observatories yielded time-resolved photometric measurements of PG 2303+243 during the period 2004 September 5–20. A duty cycle of 35 per cent was achieved. We detected 24 possible independent frequencies, their amplitudes and phases for future mode identification. We confirm the occurrence of short-term amplitude and frequency variations. Our analysis suggests an l= 1 rotational splitting around 8.4 μHz, implying a rotation period of 16.5 h.

Department(s)

Physics, Astronomy, and Materials Science

Document Type

Article

DOI

https://doi.org/10.1111/j.1365-2966.2011.18781.x

Rights Information

This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2011 The authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.

Keywords

stars individual, PG 2303+243, stars variables, stars general, white dwarfs

Publication Date

2011

Journal Title

Monthly Notices of the Royal Astronomical Society

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