Optical spectrophotometry of oscillations and flickering in AE Aquarii

Details Optical spectrophotometry of oscillations and flickering in AE Aquarii Optical spectrophotometry of oscillations and flickering in AE Aquarii

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...406..229w&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 406, no. 1, p. 229-239.

Astronomy and Astrophysics

Astrophysics

35

Cataclysmic Variables, Stellar Flares, Stellar Oscillations, Stellar Spectra, Stellar Spectrophotometry, Astronomical Models, Black Body Radiation

Scientific paper

We observed rapid variations in the nova-like cataclysmic variable AE Aquarii for 1.7 hr with 4.3 s time resolution using the 30-channel (3227-10494 A) spectrophotometer on the Hale 5 m telescope. The 16.5 and 33.0 s oscillations show a featureless blue spectrum that can be represented by a blackbody with temperature and area much smaller than the accretion disk. Models consisting of the sum of a K star spectrum and a hydrogen slab in LTE at T = 6000-10,000 K can fit the spectrum of AE Aquarii reasonably well. The spectrum of a flare indicates optically thin gas with T = 8000-12,000 K. The energy released by the flare is large compared to typical stellar flares.

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