Problems in the analysis of the XCOV4 data for AM CVn (HZ 29)

Details Problems in the analysis of the XCOV4 data for AM CVn (HZ 29) Problems in the analysis of the XCOV4 data for AM CVn (HZ 29)

Jan 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993balta...2..444k&link_type=abstract

Baltic Astronomy, vol. 2, p. 444

Astronomy and Astrophysics

Astronomy

5

Reflecting Telescopes, Stellar Spectrophotometry, Stellar Oscillations, White Dwarf Stars, Power Spectra, Light Curve

Scientific paper

The analysis of AM CVn has raised some special problems. One is the missing 1051 s and 1011 s periods. Another is related to a period of about 7.6 days which is clearly seen in the data but disappears in the whitening process. The basic problem in this case is, however, how to discover signals from a star embedded in a bright disk. The observed pulses are resolved in triplets and doublets with a constant frequency splitting. This is a sign of g-mode pulsations. We have also observed sums of frequencies and frequency doubling which are signs of the nonlinear behavior.

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