TT ARIETIS - High-state spectroscopy and the phase-magnitude relationship

Details TT ARIETIS - High-state spectroscopy and the phase-magnitude relationship TT ARIETIS - High-state spectroscopy and the phase-magnitude relationship

May 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986pasp...98..507h&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 98, May 1986, p. 507-510.

Astronomy and Astrophysics

Astronomy

10

Cataclysmic Variables, Stellar Magnitude, Stellar Spectra, Astronomical Spectroscopy, Emission Spectra, Orbital Elements, Radial Velocity, Spectral Line Width

Scientific paper

Measurements have been made on about 50 spectra of TT Ari taken during high states in 1979 and 1981. The phasing of the velocity variation T(0) appears to be the same for all high-state spectra, and varies smoothly with mean system magnitude in lower states. The emission-line equivalent widths and their orbital phase dependence do not appear to be related only to system state. There is normally an orbital modulation of line equivalent widths when the system is bright, but its phasing is variable. The velocity amplitude in high state appears to be variable by at least a factor two.

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