The relation between RS CVn and Algol

@article{Hall1989TheRB,
  title={The relation between RS CVn and Algol},
  author={Douglas S. Hall},
  journal={Space Science Reviews},
  year={1989},
  volume={50},
  pages={219-233}
}
  • D. S. Hall
  • Published 1 June 1989
  • Physics
  • Space Science Reviews
Late-type secondaries in Algol binaries are rapidly rotating convective stars and thus should be chromospherically active (CA). They are examined with respect to observational manifestations which characterize already known CA stars: Ca II H and K emission cores, photometric variability attributable to starspots, soft x-ray emission, non-thermal radio emission, ultraviolet and infrared excess, and alternating period changes. The conclusion is that they can be regarded as another class of CA… 
HD 63021: Chromospheric Activity and Mass Transfer in a Close Binary
Prompted by X-ray detections from multiple surveys, we investigated the A-type star HD 63021 and found that it is a double-lined spectroscopic binary with highly variable emission associated with the
THE FIRST COMPREHENSIVE PHOTOMETRIC STUDY OF THE ALGOL-TYPE SYSTEM CL AURIGAE
We present the first extensive photometric results of CL Aur from our BVRI CCD photometry made on 22 nights from 2003 November to 2005 February. Fifteen new timings of minimum light were obtained.
MAGNETIC BRAKING AND THE EVOLUTION OF THE HW VIR-LIKE BINARY STARS
HW Vir-like close binaries are thought to be the progenitors of cataclysmic variables. However, how this type of peculiar stars evolve into cataclysmic variables is an unsolved problem in
Long-term starspot evolution, activity cycle and orbital period variation of RT Lacertae
A sequence of V -band light curves of the active close binary RT Lacertae (G5+G9 IV), extending from 1965 to 2000, is presented and analysed to derive the spot distribution and evolution on the
Are Superflares on Solar Analogues Caused by Extrasolar Planets
Stellar flares with 102-107 times more energy than the largest solar flare have recently been detected from nine normal F and G main-sequence stars by Schaefer, King, and Deliyannis. These
Hα Spectroscopy of RW Monocerotis
Five years of sparse full-orbit Hα spectroscopy are presented for the short-period Algol RW Monocerotis. A spectroscopic mass ratio is derived that confirms the published photometric mass ratio. Of
Optical, X-ray and radio observations of HD 61396: a probable new RS CVn-type binary
We have carried out BVR photometric and Hα spectroscopic observations of the star HD 61396 during 1998 March 20 to 1999 April 3. We have discovered regular optical photometric variability from this
PHOTOMETRIC PROPERTIES FOR SELECTED ALGOL-TYPE BINARIES. V. V1241 TAURI
We present new photometry for the eclipsing binary V1241 Tau, which was obtained on six nights between 2011 December and 2012 January using the 85 cm telescope at the Xinglong station of the National
Doppler Tomography of Eclipsing and Non-eclipsing Algols
Since the advent of Doppler tomography, Hα tomograms of eleven eclipsing Algol-type binaries and an ultraviolet tomogram of U Sge have been made from difference profiles. Tomograms of CX Dra, a
δ Sct-type pulsations in eclipsing binary systems: Y Cam
We present the results of a three-continent multisite photometric campaign carried out on the Algol-type eclipsing binary system RZ Cas, in which the primary component has recently been discovered to
...
...

References

SHOWING 1-10 OF 61 REFERENCES
Starspots as the cause of the intrinsic light variations in RS Canum Venaticorum type stars
We have used a theoretical model of a binary system in which one of the components has spots on its surface to interpret the light curves of three well-observed RS CVn type systems, RS CVn, SZ Psc,
Results of a survey of chromospherically active stars
A variety of spectroscopic and/or photometric observations have been obtained for 52 systems most of which contain newly identified chromospherically active stars. Instead of differential photometry
A survey of chromospherically active stars
Photometric and/or spectroscopic observations have been obtained of 52 late-type stars which are suspected or known to be chromospherically active. Although not all types of observations were
Binarity as a factor in stellar radio emission
A simple examination of Table I which lists the 26 positively detected “active” radio stars reveals that 21 are interacting binaries. Thus, on face value, membership in a close binary system would
Radio emission from RS CVn binaries. II - Polarization and spectral properties
Multiepoch radio observations of circular polarization and spectral characteristics of several close, late-type stellar binaries are reported. The median luminosity of four well-studied systems
SV Centauri - a truly contact binary.
A light-curve-synthesis program which implements interpolation in a grid of nongray model atmospheres has been used to determine the geometrical elements of SV Cen by simultaneous
An X-ray survey on nine algol systems
The observed X-ray luminosities seen from an Einstein survey of nine Algol like systems are similar to those found by Pallavicini, et al. (1981) for single or widely separated rapidly rotating late
The radio-flaring triple system b Persei
Analysis of 221 velocities of b Persei covering the interval 1910--1975 reveals both 1.527364 day and 701 day periodic variations, implying that this single-lined system is actually triple.
Stellar activity cycles
The variety of stellar chromospheric and coronal activity provides a framework for understanding solar and stellar magnetic activity. It is pointed out that the recognition of an 11-yr periodicity
Relations among stellar X-ray emission observed from Einstein, stellar rotation and bolometric luminosity
We have determined the correlation between observed stellar X-ray luminosities, bolometric luminosities, and projected rotational velocities v sin / for stars of various spectral types and luminosity
...
...