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Title:
Evidence for a bipolar wind in the cataclysmic variable PG 1012-029
Authors:
Honeycutt, R. K.; Schlegel, E. M.; Kaitchuck, R. H.
Affiliation:
AA(Indiana University, Bloomington), AB(Indiana University, Bloomington), AC(Ohio State University, Columbus)
Publication:
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 302, March 1, 1986, p. 388-402. (ApJ Homepage)
Publication Date:
03/1986
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
ACCRETION DISKS, CATACLYSMIC VARIABLES, DWARF NOVAE, ECLIPSING BINARY STARS, STELLAR SPECTROPHOTOMETRY, STELLAR WINDS, CONTINUOUS SPECTRA, EMISSION SPECTRA, LIGHT CURVE, LINE SPECTRA, RADIAL VELOCITY, STELLAR MODELS, STELLAR ROTATION
DOI:
10.1086/163997
Bibliographic Code:
1986ApJ...302..388H

Abstract

A study of PG 1012-029, a nova-like variable which undergoes deep eclipses by the secondary star, is reported. Whole-orbit time resolved spectrophotometry has been used to study the size, shape and kinematics of the accretion disk. Analysis of line and continuum eclipse light curves is used to determine the radius and the elevation above the plane of the disk for three characteristic emitting regions: the high-excitation lines; the low-excitation lines; and the continuum. Modeling of the observed velocity strip light curves of He II (4686 angstroms) is used to study the motions of this particular emitting region and to demonstrate that the eclipse behavior of He II implies rotation that is slower than Keplerian. It is argued that a nonrotating component dominates the line profiles and eclipse behavior in this system, and this component is attributed to a bipolar wind from the accretion disk.

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