Results 21 to 30 of about 48,149 (293)

The Photometric Study of Six W UMa Systems and Investigation of the Mass–Radius Relations for Contact Binary Stars [PDF]

open access: greenPublications of the Astronomical Society of the Pacific, 2022
We present the photometric analysis of six short-period systems (EI Oct, V336 TrA, NX Boo, V356 Boo, PS Boo, and V2282 Cyg). This is the first photometric analysis of these systems except for V336 TrA.
Atila Poro   +15 more
semanticscholar   +4 more sources

Contact binary stars

open access: yesThe Astrophysical Journal, 1981
Densities, corrected primary colors, minimum periods, inferred masses, luminosities, and specific angular momenta are computed from data on 37 W Ursae Majoris systems. A-type systems, having lower densities and angular momenta than the W-type systems, are shown to be evolved, and a new class of contact binary is identified, the OO Aquilae systems ...
S. Mochnacki
openaire   +2 more sources

BSN. V. The First Detailed Light Curve Modeling of Eight Totally Eclipsing Contact Binary Stars Using Ground-based and TESS Observations [PDF]

open access: hybridPublications of the Astronomical Society of the Pacific
This study broadens our comprehensive investigation of total-eclipse W Ursae Majoris-type contact binaries by analyzing eight additional systems, continuing our previous research.
Atila Poro   +5 more
semanticscholar   +4 more sources

BSN-III: The First Multiband Photometric Study on the Eight Total Eclipse Contact Binary Stars [PDF]

open access: green
This study continues our in-depth investigation of total-eclipse W Ursae Majoris-type contact binaries by analyzing eight new systems, complementing our previous work.
Atila Poro   +8 more
semanticscholar   +3 more sources

The Short Period End of the Distribution of Contact Binary Stars [PDF]

open access: green, 2013
Presented at the "40 Years of Variable Stars: A Celebration of Contributions by Horace A. Smith" conference (arXiv:1310.0149).
Lawrence A. Molnar   +2 more
openalex   +3 more sources

Binary Analysis and Period Study of the Long-period, High-mass-ratio Contact Binary KIC 7766185

open access: yesThe Astronomical Journal
We present an in-depth photometric and spectroscopic study of the contact binary KIC 7766185. Spectroscopic observations were conducted on the Mayall 4 m telescope at Kitt Peak National Observatory and used to extract radial velocities.
Conor M. Larsen, Andrej Prša
doaj   +2 more sources

BSN. II. The First Light Curve Study of Eight Total Eclipsing Contact Binary Stars with Shallow Fillout Factors [PDF]

open access: goldAstronomical Journal
This study provides the first comprehensive analysis of eight total-eclipse W Ursae Majoris-type contact binary systems. Ground-based photometric multiband observations were conducted at a Mexican observatory, and new times of minima were extracted.
Atila Poro   +8 more
semanticscholar   +4 more sources

On the maintenance of a temperature discontinuity in contact binary stars [PDF]

open access: bronzeMonthly Notices of the Royal Astronomical Society, 1979
J. C. B. Papaloizou, J. E. Pringle
openalex   +2 more sources

Models of Close and Contact Binary Stars--I: Polytropic Models [PDF]

open access: bronzeMonthly Notices of the Royal Astronomical Society, 1970
B. R. Durney, I. W. Roxburgh
openalex   +2 more sources

The uniqueness of determination of the photometric mass ratio of contact binary stars with applications to selected binaries [PDF]

open access: diamondContributions of the Astronomical Observatory Skalnaté Pleso
. We have used a Roche-geometry code to pre-generate light curves of contact binary stars using only mass ratio q , fill out f of the Roche lobes, and the inclination i of the orbital plane.
Ľ. Hambálek, T. Pribulla
openalex   +2 more sources

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