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SPECTROSCOPY OF THE DWARF NOVA RX ANDROMEDAE AT MINIMUM

J. B. HUTCHINGS and B. THOMAS
Publications of the Astronomical Society of the Pacific
Vol. 94, No. 557 (February 1982), pp. 102-106
Stable URL: http://www.jstor.org/stable/40677920
Page Count: 5
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SPECTROSCOPY OF THE DWARF NOVA RX ANDROMEDAE AT MINIMUM
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Abstract

Spectrographic data on RX And have been obtained with 1.5 Å resolution and a time resolution of ~ 0.03 in phase, covering 50% of the orbit cycle, during three nights in 1979. The system appears to have been at or near minimum at all times. Results are presented of detailed velocity measures, line-profile studies, and phase-related spectroscopic changes. A somewhat shorter period is derived than that indicated by Kraft's (1962) study, and we find no definite evidence for the previously derived orbital eccentricity. Line profiles show fine structure at some phases, and a broad wing extending shortward. The secondary spectrum is detected. Parameters for the system are discussed, using a revised mass function value.

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