Results 41 to 50 of about 1,008,045 (157)

Enhanced magnetic activity in rapidly rotating binary stars

open access: yes
Stellar activity is fundamental to stellar evolution and the formation and habitability of exoplanets. Magnetic surface activity is driven by the interaction between convective motions and rotation in cool stars, resulting in a dynamo process.
Gizon, Laurent   +14 more
core   +1 more source

Mining Double-line Spectroscopic Candidates in the LAMOST Medium-resolution Spectroscopic Survey Using a Human–AI Hybrid Method

open access: yesThe Astrophysical Journal Supplement Series
We utilize a hybrid approach that integrates the traditional cross-correlation function (CCF) and machine learning to detect spectroscopic multiple star systems, specifically focusing on double-line spectroscopic binaries (SB2s).
Shan-shan Li   +7 more
doaj   +1 more source

The GALAH survey: multiple stars and our Galaxy [PDF]

open access: yes, 2020
Context. Binary stellar systems form a large fraction of the Galaxy’s stars. They are useful as laboratories for studying the physical processes taking place within stars, and must be correctly taken into account when observations of stars are used to ...
Kos, J.,   +110 more
core   +1 more source

The TESS Ten Thousand Catalog: 10,001 Uniformly Vetted and Validated Eclipsing Binary Stars Detected in Full-frame Image Data by Machine Learning and Analyzed by Citizen Scientists

open access: yesThe Astrophysical Journal Supplement Series
The Transiting Exoplanet Survey Satellite (TESS) has surveyed nearly the entire sky in full-frame image mode with a time resolution of 200 s to 30 minutes and a temporal baseline of at least 27 days.
Veselin B. Kostov   +38 more
doaj   +1 more source

Shaping the Outflows of Binary AGB Stars

open access: yes, 2015
The required conditions for stars to evolve into planetary nebulae (PNe) continue to puzzle. Since PNe are found in a wide variety of shapes, processes that could sculpt circumstellar envelopes (CSEs) are being investigated.
Mohamed, Shazrene,   +2 more
core   +1 more source

New periodic variable stars coincident with ROSAT sources discovered using SuperWASP [PDF]

open access: yes, 2007
We present optical lightcurves of 428 periodic variable stars coincident with ROSAT X-ray sources, detected using the first run of the SuperWASP photometric survey. Only 68 of these were previously recognised as periodic variables.
West, Richard G.   +75 more
core   +1 more source

Speckle Interferometry at SOAR Telescope in 2023

open access: yesThe Astronomical Journal
Results of the speckle-interferometry observations at the 4.1 m Southern Astrophysical Research Telescope obtained during 2023 are presented: 1913 measurements of 1533 resolved pairs or subsystems (median separation 0.″16) and nonresolutions of 552 ...
Andrei Tokovinin   +3 more
doaj   +1 more source

BinSlayer: Accurate Comparison of Binary Executables [PDF]

open access: yes, 2013
As the volume of malware inexorably rises, comparison of binary code is of increasing importance to security analysts as a method of automatically classifying new malware samples; purportedly new examples of malware are frequently a simple evolution of ...
Martial Bourquin   +5 more
core   +1 more source

First Double Red Giant Algol System with Active Mass Transfer

open access: yesThe Astronomical Journal
Double red giant stars are very important for studies of the stability of mass transfer, common-envelope evolution, and the formation of double white dwarfs with short orbital periods.
Mikhail Yu. Kovalev   +9 more
doaj   +1 more source

CN Trianguli: A W-type Contact Binary Exhibiting A-type Light Curve via Starspot-induced Dimming

open access: yesThe Astrophysical Journal
We present comprehensive photometric observations and analysis of the totally eclipsing binary CN Tri. The photometric solutions suggest it as an extremely low mass ratio contact binary system with q ∼ 0.08.
Zhi-Hua Wang   +3 more
doaj   +1 more source

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