On the location of the oscillations in AE Aquarii

Details On the location of the oscillations in AE Aquarii On the location of the oscillations in AE Aquarii

Jun 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...410l..39w&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 410, no. 1, p. L39-L42.

Astronomy and Astrophysics

Astrophysics

45

Cataclysmic Variables, Emission Spectra, Stellar Oscillations, Stellar Spectra, Ephemeris Time, Phase Shift, Radial Velocity, Stellar Models, White Dwarf Stars, X Ray Spectra

Scientific paper

There is much recent interest on the nature of the oscillations in the cataclysmic variable AE Aquarii. Detected in the optical, UV, X-ray, and possibly gamma-ray bands, the origin of these 33-sec oscillations remains poorly understood; the oscillation time-delay curve is phase shifted by about 60 deg with respect to the emission-line radial velocity curve, although both should track the orbital motion of the white dwarf. We present simultaneous absorption and emission-line radial velocities, and from the absorption lines we derive an improved ephemeris. Our emission-line velocities are phase shifted by about 75 deg, and hence are unreliable tracers of the orbital motion of the white dwarf. However, the oscillation orbit is shifted by only 5 deg +/- 3 deg percent confirming that the oscillations arise from a region concentric with the white dwarf. Thus the arrival times of the oscillations yield a measure of the white dwarfs apparent orbital velocity, independent of emission-line radial velocity measurements.

Affiliated with

Also associated with

No associations

Rating

On the location of the oscillations in AE Aquarii does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with On the location of the oscillations in AE Aquarii, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the location of the oscillations in AE Aquarii will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1735695