The first study of 54 new eccentric eclipsing binaries in our Galaxy
arXiv:1811.08471 · doi:10.1051/0004-6361/201832793
Abstract
We present an analysis of the apsidal motion and light curve parameters of 54 never-before-studied galactic Algol-type binaries. This is the first analysis of such a large sample of eccentric eclipsing binaries in our Galaxy, and has enabled us to identify several systems that are worthy of further study. Bringing together data from various databases and surveys, supplemented with new observations, we have been able to trace the long-term evolution of the eccentric orbit over durations extending back up to several decades. Our present study explores a rather different sample of stars to those presented in the previously published catalogue of eccentric eclipsing binaries, sampling to fainter magnitudes, covering later spectral types, sensitive to different orbital periods with more than 50% of our systems having periods longer than six days. The typical apsidal motion in the sample is rather slow (mostly of order of centuries long), although in some cases this is less than 50 yr. All of the systems, except one, have eccentricities less than 0.5, with an average value of 0.23. Several of the stars also show evidence for additional period variability. In particular we can identify three systems in the sample, HD 44093, V611 Pup, and HD 313631, which likely represent relativistic apsidal rotators.
arXiv comment8 pages of text, many sets of figures, include also appendix large list of minima times, published in 2018A&A...619A..85Z
References in corpus (21)
- The Man Behind the Curtain: X-rays Drive the UV through NIR Variability in the 2013 AGN Outburst in NGC 2617
- A Survey of Stellar Families: Multiplicity of Solar-Type Stars
- Stellar Multiplicity
- First Results from the Catalina Real-time Transient Survey
- The WASP Project and the SuperWASP Cameras
- The All-Sky Automated Survey for Supernovae (ASAS-SN) Light Curve Server v1.0
- A Computational Guide to Physics of Eclipsing Binaries. Paper I. Demonstrations and Perspectives
- SB9: The Ninth Catalogue of Spectroscopic Binary Orbits
- Northern Sky Variability Survey (NSVS): Public data release
- The first WASP public data release
- A Comprehensive Study of the Kepler Triples via Eclipse Timing
- Comparative statistics and origin of triple and quadruple stars
- An Updated Look at Binary Characteristics of Massive Stars in the Cygnus OB2 Association
- Apsidal motion and light a curve solution for eighteen SMC eccentric eclipsing binaries
- Light curve solutions for bright detached eclipsing binaries in SMC: absolute dimensions and distance indicators
- STEREO observations of stars and the search for exoplanets
- The Bochum Survey of the Southern Galactic Disk: II. Follow-up measurements and multi-filter photometry for 1323 square degrees monitored in 2010-2015
- Apsidal motions of 90 eccentric binary systems in the Small Magellanic Cloud
- ASAS Eclipsing Binaries with Observed High Period Change Rates
- Limits on the early afterglow phase of gamma-ray burst sources from TAROT-1
- The period analysis of V418 Aql, SU Boo, RV CVn, CR Cas, GV Cyg, V432 Per, and BD+42 2782