Results 21 to 30 of about 1,270 (239)

Constraining the Mass Loss Geometry of Beta Lyrae [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2012
Massive binary stars lose mass by two mechanisms: jet-driven mass loss during periods of active mass transfer and by wind-driven mass loss. Beta Lyrae is an eclipsing, semi-detached binary whose state of active mass transfer provides a unique ...
Jamie R. Lomax
doaj   +1 more source

EVOLUTIONARY EFFECTS IN CLOSE BINARIES: ANALYSIS OF THE DISTRIBUTION OF ORBITAL ECCENTRICITIES

open access: yesOdessa Astronomical Publications, 2017
Dependencies of orbital eccentricity e on orbital periods P in close binary systems (CBS) of different masses and ages, being at the Main Sequence (DMS) and being eclipsing binary stars (EBS), are reviewed.
A. M. Cherepashchuk, V. G. Karetnikov
doaj   +1 more source

The Mass and Angular Momentum Relation of Eclipsing Binaries [PDF]

open access: yesJournal of Astronomy and Space Sciences, 1998
With a total 3780 eclipsing binary system in the Catalogue of Approximate Photometric and Absolute Elements of Eclipsing Variable Stars by Svechnikov & Kuznetsova (1990), the empirical relations between the systemic mass and orbital angular momentum have
Kyu-Dong Oh
doaj  

V2197 Cyg: a semi-detached eclipsing binary? [PDF]

open access: yes, 2017
The variability of V2197 Cyg (NSVS 5761314, TYC 3167-1279-1), amongst many others, was discovered photographically by Margoni & Stagni (1984, hereafter M&S) who gave coordinates, magnitude ranges in B and V , finder charts for all 99 stars, elements ...
Russell M., Robb   +5 more
core   +1 more source

Tango of celestial dancers: A sample of detached eclipsing binary systems containing g-mode pulsating components. A case study of KIC9850387 [PDF]

open access: yes, 2020
Context. Eclipsing binary systems with components that pulsate in gravity modes (g modes) allow for simultaneous and independent constraints of the chemical mixing profiles of stars.
Bowman, D. M.   +26 more
core   +1 more source

Binary stars in globular clusters [PDF]

open access: yes, 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
core   +1 more source

Detection of Semidetached Eclipsing Binaries from TESS

open access: yesThe Astronomical Journal
Semidetached binaries, distinguished by their mass transfer phase, play a crucial role in elucidating the physics of mass transfer within interacting binary systems.
Xu Ding   +6 more
doaj   +1 more source

Fundamental effective temperature measurements for eclipsing binary stars I. Development of the method and application to AI Phoenicis [PDF]

open access: yes, 2020
Stars with accurate and precise effective temperature (Teff) measurements are needed to test stellar atmosphere models and calibrate empirical methods to determine Teff. There are few standard stars currently available to calibrate temperature indicators
Smalley, Maxted
core   +1 more source

Directed evolution of enzymes at the crossroads of tradition and innovation

open access: yesFEBS Open Bio, EarlyView.
An iterative cycle of data‐driven enzyme optimization comprising four stages: genetic diversification of a template enzyme, expression of protein variants, high‐throughput evaluation, and machine‐learning‐guided redesign of the next variant library.
Maria Tomkova   +2 more
wiley   +1 more source

Two Ultralow-mass-ratio Binary Systems at Critical Evolutionary Stages

open access: yesThe Astronomical Journal
In this paper, we present photometric observations and period analysis of two totally eclipsing binaries with extremely low-amplitude light curves. Both binaries exhibit typical W Ursae Majoris-type light curves with total eclipses, allowing for the ...
Di-Fu Guo   +6 more
doaj   +1 more source

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