840 datasets found

Keywords: eclipsing binary stars

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  • WASP-13b photometry and radial velocities

    We report the discovery of WASP-13b, a low-mass M_p_=0.46^+0.06^-0.05 M_J_ transiting exoplanet with an orbital period of 4.35298+/-0.00004days. The transit has a depth of...
  • V636 Cen radial velocities curves

    The influence of stellar activity on the fundamental properties of stars around and below 1M_{sun}_ is not well understood. Accurate mass, radius, and abundance determinations...
  • Discovery and characterization of WASP-6b

    We report the discovery of WASP-6b, an inflated sub-Jupiter mass planet transiting every 3.3610060^+0.0000022^-0.0000035_days a mildly metal-poor solar-type star of magnitude...
  • Binary PNe towards the Galactic bulge

    Binarity has been hypothesised to play an important, if not ubiquitous, role in the formation of planetary nebulae (PNe). Yet there remains a severe paucity of known binary...
  • Multiwavelength study of Cyg OB2 5

    The properties of the early-type binary Cyg OB2 #5 have been debated for many years and spectroscopic and photometric investigations yielded conflicting results. We have...
  • VIc light curves of NGC 6791 V20

    We wish to determine accurate ages for open clusters and use this, in conjunction with colour-magnitude diagrams, to constrain models of stellar structure and evolution. The...
  • Period study of TW Draconis

    We present a study of time series data for the Algol-type eclipsing binaries TW Draconis obtained over the past 150 years to detect changes in minima timings. There is...
  • Evolutionary models of binaries

    The observed distribution of orbital periods of Algols with a B-type primary at birth agrees fairly well with the prediction from conservative theory. Conservative evolution...
  • Radial velocities of AD Boo, VZ Hya, WZ Oph

    Accurate mass, radius, and abundance determinations from binaries provide important information on stellar evolution, fundamental to central fields in modern astrophysics and...
  • uvby photometry of 6 eclipsing binaries

    Accurate mass, radius, and abundance determinations from binaries provide important information on stellar evolution, fundamental to central fields in modern astrophysics and...
  • BV light curve of V570 Per

    The orbit and physical parameters of the previously unsolved double-lined eclipsing binary V570 Per are derived using Asiago Echelle high-resolution and high S/N spectroscopy,...
  • BV photometry of NGC 2099 variables

    Rotation and solar-type magnetic activity are closely related to each other in main-sequence stars of G or later spectral types. The presence and level of magnetic activity...
  • Radial velocity curves of V1007 Sco

    Having obtained new series of electronic spectra and UBV photometry of V1007 Sco, we analysed these data in an effort to check whether the observed properties of V1007 Sco...
  • V505 Per BV light curves

    The orbit and fundamental physical parameters of the double-lined eclipsing binary V505 Per are derived by means of Echelle high-resolution and high S/N spectroscopy, and B, V...
  • Distances and atmospheric parameters of MSU stars

    Recent analyses of low-mass eclipsing binary stars have unveiled a significant disagreement between the observations and the predictions of stellar structure models. Results...
  • Differential Stroemgren photometry of U Oph

    We aim to determine absolute dimensions for the mid B-type eclipsing binary U Ophiuchi and compare the inferred ages and chemical compositions to those of other binary stars...
  • Bet Aur light curves

    We present the most precise light curve ever obtained of a detached eclipsing binary star and use it investigate the inclusion of non-linear limb darkening laws in light curve...
  • Photometry of DE CVn

    Close white dwarf-red dwarf binaries must have gone through a common-envelope phase during their evolution. DE CVn is a detached white dwarf-red dwarf binary with a relatively...
  • BVI and RV curves of 5 eclipsing binaries

    We detected tertiary components of close binaries from spectroscopy and light curve modelling, investigated the light-travel time effect and the possibility of magnetic activity...
  • Geneva photometry of HD 23642

    HD 23642 is the only known eclipsing binary in the Pleiades, and therefore of importance in determining the distance to this cluster. To use new photometric and spectroscopic...
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