Quiescent observations of the WZ sagittae-type dwarf nova PQ andromedae

Grec J. Schwarz, Travis S Barman, Nicole Silvestri, Paula Szkody, Sumner Starrfield, Karen Vanlandingham, R. Mark Wagner

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Abstract

We have obtained time series optical spectra of the cataclysmic variable PQ And in quiescence. The spectra show a white dwarf continuum with narrow Balmer emission superimposed over strong Balmer absorption. The emission lines have blue and red components whose strength changes with time. An analysis of the Hα emission line implies a short orbital period below the period gap. Given its lack of accretion disk features, its large and infrequent outbursts, and an orbital period below the period gap, PQ And is probably a low accretion rate object similar to WZ Sge. In addition, white dwarf model fits imply that PQ And is an excellent ZZ Cet candidate.

Original languageEnglish (US)
Pages (from-to)1111-1116
Number of pages6
JournalPublications of the Astronomical Society of the Pacific
Volume116
Issue number826
DOIs
Publication statusPublished - Dec 2004
Externally publishedYes

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ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Schwarz, G. J., Barman, T. S., Silvestri, N., Szkody, P., Starrfield, S., Vanlandingham, K., & Wagner, R. M. (2004). Quiescent observations of the WZ sagittae-type dwarf nova PQ andromedae. Publications of the Astronomical Society of the Pacific, 116(826), 1111-1116. https://doi.org/10.1086/426927