A new photometric and spectroscopic study of the eclipsing binaries CC Her and CM Lac: physical parameters and evolutionary status

@article{Liakos2012ANP,
  title={A new photometric and spectroscopic study of the eclipsing binaries CC Her and CM Lac: physical parameters and evolutionary status},
  author={Alexios Liakos and Panagiotis G. Niarchos},
  journal={Astrophysics and Space Science},
  year={2012},
  volume={340},
  pages={281-289}
}
New complete light and radial velocities curves were obtained for the eclipsing binaries CC Her and CM Lac. The data are analysed with modern techniques in order to derive the physical parameters of the systems and study their present evolutionary status. We found that CC Her is a classical Algol type binary, while CM Lac is a detached system with two Main Sequence stars in asynchronous orbit. 

References

SHOWING 1-10 OF 31 REFERENCES

A catalogue of eclipsing variables

A new catalogue of 6330 eclipsing variable stars is presented. The catalogue was developed from the General Catalogue of Variable Stars (GCVS) and its textual remarks by including recently published

A SEARCH FOR ROTATIONAL VELOCITY CHANGES AMONG ECLIPSING BINARY STARS.

The rotations of 26 close binary stars are compared, as they were observed at three epochs separated by five to twelve years. Significant changes in the rotation of the hot gainer are noted in three

A Photometric Study of Selected Near-Contact Binary Systems

The light curves of 16 near-contact binaries (10 from published observations and 6 from our own observations) from the catalog by Shaw (1994) have been solved in a homogeneous manner in order to

Radial Velocity Studies of Close Binary Stars. VII. Methods and Uncertainties

Methods used in the radial velocity program of short-period binary systems at the David Dunlap Observatory are described with particular stress on the broadening-function formalism. This formalism

ABSOLUTE DIMENSIONS OF CM LACERTAE

Photoelectric UBV observations of CM Lac were obtained, and the resulting three light curves were solved. It was decided that primary eclipse is definitely a transit. A few peculiarities were found

Eccentric orbit generalization and simultaneous solution of binary star light and velocity curves

The computation of binary star light and radial velocity curves are discussed, including the effects of eccentric orbits and nonsynchronous rotation. Logical relations needed to impose physical

A Mechanism for Orbital Period Modulation in Close Binaries

Some eclipsing variables are observed to undergo orbital period modulations of amplitude ΔP/P∼10 −5 over time scales of decades or longer. These modulations can be explained by the gravitational

Accurate masses and radii of normal stars: modern results and applications

This article presents and discusses a critical compilation of accurate, fundamental determinations of stellar masses and radii. We have identified 95 detached binary systems containing 190 stars (94

The Case for Third Bodies as the Cause of Period Changes in Selected Algol Systems

Many eclipsing binary star systems show long-term variations in their orbital periods, evident in their O - C (observed minus calculated period) diagrams. With data from the Robotic Optical Transient

A catalogue of close binaries located in the δ Scuti region of the Cepheid instability strip

A catalogue of close eclipsing binary systems (detached and semidetached) with at least one of the components located in the δ Scuti region of the Cepheid instability strip is presented. The