Two Examples of Mass Transfer Effects on the Long - Light Curves of Cataclysmic Variables.

Details Two Examples of Mass Transfer Effects on the Long - Light Curves of Cataclysmic Variables. Two Examples of Mass Transfer Effects on the Long - Light Curves of Cataclysmic Variables.

Jan 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995phdt........19r&link_type=abstract

Thesis (PH.D.)--INDIANA UNIVERSITY, 1995.Source: Dissertation Abstracts International, Volume: 57-01, Section: B, page: 0395.

Other

1

Scientific paper

Two types of behavior are analyzed from the long -term light curves of cataclysmic variables. The differences are likely associated with the mass transfer rate in these close interacting binary stars. A stable mass transfer rate is inferred for one group of newly identified objects and a possibly variable rate of mass transfer produces an entirely different kind of behavior for one other cataclysmic variable. I call attention to a small group of cataclysmic variable stars (whose prototype might be considered RZ Leonis Minoris) that have complex light curves of similar shape which repeat with typical periods of a few weeks. The phenomenon appears to be closely related to SU Ursae Majoris -type "superoutbursts," especially since "superhumps" appear in these stars. The predictability of the time of each superoutburst and the stability of the shape of the light curve is unexpectedly high for cataclysmic variables, which are well-known for erratic variations in both the timing and the shape of their eruptions. The similarities and differences between these RZ LMi stars and SU UMa systems are summarized and discussed in the context of extant models for the superoutbursts of SU UMa-type dwarf novae. A new fiber-fed echelle spectrograph is exercised on the enigmatic object V Sagittae. The V Sge long-term light curve exhibits high-state/low-state transitions in brightness similar to that of some nova-like cataclysmic variables. On orbital time-scales, both primary and secondary eclipses are visible for the system when in its low-state, but are much less dramatic when the system is bright. High -state time-resolved orbital spectra through primary eclipse show little orbital effects and are dominated by nightly variations. The spectra have very broad emission lines of mostly hydrogen and helium, Hα showing wings out to +/-2200 km thin space s^{-1} and an equivalent width of ~200 A indicating outflow and circumstellar material.

Affiliated with

Also associated with

No associations

Rating

Two Examples of Mass Transfer Effects on the Long - Light Curves of Cataclysmic Variables. 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 Two Examples of Mass Transfer Effects on the Long - Light Curves of Cataclysmic Variables., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Two Examples of Mass Transfer Effects on the Long - Light Curves of Cataclysmic Variables. will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-837710