Results 41 to 50 of about 52,158 (299)
Contact tracing of binary stars - from sub-solar to high-mass components
, 2022 Stellar mergers produce massive single stars with potentially distinctive prop- erties. These include rejuvenated blue stragglers, highly magnetized (massive) stars, and stars with peculiar chemical abundances and rotation rates. The actual merger phases
Henneco, Jan +4 more
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Mass Ratio Estimates for Overcontact Binaries Using the Derivatives of Light Curves
The Astrophysical Journal, 2023 The photometric mass ratios of eclipsing binaries are usually estimated by light-curve modeling with an iterative method. We propose a new method for estimating the photometric mass ratio of an overcontact binary using the derivatives of a light curve ...
Shinjirou Kouzuma
doaj +1 more source
Photometric study of the contact binary star V861 Herculis [PDF]
Astronomy & Astrophysics, 2004 First Cousins V(RI)C light curves of the W UMa-type eclipsing variable star V861 Herculis are presented. The system was observed in 2000 and 2003. The light curves obtained at different epochs showed significant deviation from each other. The O'Connell effect was about ∆V = 0.05 mag in 2000 but it vanished in 2003 (except the night of February 22/23 ...
Sz. Csizmadia +3 more
openaire +1 more source
On the lower limit of contact binary star periods
Monthly Notices of the Royal Astronomical Society, 2022 ABSTRACT Data for 405 contact binary systems extracted from a recent compilation are supplemented by information from the literature for an additional ten ultrashort period (P < 0.2 d) binaries. This is used to calibrate period–luminosity–temperature relations for contact binaries.
openaire +1 more source
A Method of Measuring Gamma-Velocities of Contact Binary Stars [PDF]
International Astronomical Union Colloquium, 1999 AbstractGamma-velocities of bright contact binary stars (VW Cep, SW Lac, AB And, OO Aql) have been computed using cross-correlation. The template spectra were synthesized with a newly developed computer code WGMODEL.
G. Kaszás, J. Vinkó, G. Fürész
openaire +1 more source
On the True Nature of the Contact Binary CRTS J192848.7-404555
, 2022 CRTS J192848.7-404555 was recognised as a potential contact binary merger candidate on the basis of survey photometry analysis. We have carried out follow up ground based photometry of the system and show that at the recorded coordinates for the system ...
Wadhwa, Surjit S +3 more
core +2 more sources
Three Ultra-short-period Contact Eclipsing Binary Systems Mined from Massive Astronomical Surveys
The Astronomical Journal, 2023 We present the photometric analysis of three ultra-short-period total eclipsing binaries in contact configuration, CRTS_J172718.0+431624, OGLE-BLG-ECL-000104, and OGLE-BLG-ECL-000012, mined from massive astronomical surveys.
Athanasios Papageorgiou +5 more
doaj +1 more source
Contact-binary Evolution with Energy Transfer and Saturated Magnetic Braking
The Astrophysical JournalThe evolution of low-mass contact binaries is influenced by angular momentum loss, mass and energy transfer (ET), and the nuclear evolution of the components.
Matthias Fabry, Andrej Prša
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Interpreting the effects of DNA polymerase variants at the structural level
Molecular Oncology, EarlyView.Using MAVISp and molecular dynamics simulations, we analyzed over 60 000 missense variants in POLE and POLD1 from ClinVar, COSMIC, cBioPortal, and saturation mutagenesis. Identified mechanistic indicators, including stability, binding, and long‐range, enable structural interpretation, providing ACMG‐like evidence for possible reclassification of VUS ...
Matteo Arnaudi +7 more
wiley +1 more source
Binary stars in globular clusters [PDF]
, 1996 NOTE: Text or symbols not renderable in plain ASCII are indicated by [...]. Abstract is included in .pdf document. This thesis consists of several surveys to search for binary stars and to estimate the frequencies of binary populations in globular ...
Yan, Lin
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