Results 41 to 50 of about 210,797 (284)

Space-Based Photometry of Binary Stars: From Voyager to TESS

open access: yesUniverse, 2021
Binary stars are crucial laboratories for stellar physics, so have been photometric targets for space missions beginning with the very first orbiting telescope (OAO-2) launched in 1968.
John Southworth
doaj   +1 more source

The Amateur and Eclipsing Binary Stars [PDF]

open access: yesInternational Astronomical Union Colloquium, 1988
Probably no other branch of science has benefited as much from the work of dedicated amateurs as has the science of Astronomy. While some amateurs have made many useful types of astronomical observations– comets, meteors, occultations, etc. – perhaps none has been as extensive and as useful as those made in the field of variable stars.
openaire   +2 more sources

A CONSTRUCTION OF A SEMI-AUTOMATIC TELESCOPE FOR ECLIPSE TIMING OBSERVATIONS OF ECLIPSING BINARY STARS [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2003
We constructed the photometric observation system with a small semi-automatic telescope for the systematic observations of eclipse timings of eclipsing binary stars.
Chung-Uk Lee   +3 more
doaj   +1 more source

Hidden Companions Detected by Asteroseismology. I. Two Kepler Field Non-Eclipsing Binaries

open access: yesUniverse, 2022
The Kepler space telescope has detected a large number of variable stars. We summarize 2261 δ Scuti and hybrid variables in the literature, and perform time-frequency analysis on these variable stars. Two non-eclipsing binary systems, KIC 5080290 and KIC
Ming Yang
doaj   +1 more source

ELLC - a fast, flexible light curve model for detached eclipsing binary stars and transiting exoplanets [PDF]

open access: yes, 2016
Very high quality light curves are now available for thousands of detached eclipsing binary stars and transiting exoplanet systems as a result of surveys for transiting exoplanets and other large-scale photometric surveys.
Maxted, P. F. L.
core   +3 more sources

Turbulence in the Atmospheres of Eclipsing Binary Stars [PDF]

open access: yesInternational Astronomical Union Colloquium, 1980
Abstract:A review of the orbits and dimensions of the ζ Aurigae systems is given, based on photometric and spectrographic observations. The Ca II K-line has been studied intensively to determine the extent and uneven structure of the chromospheres of these stars; the multiple structure of this line observed at several eclipses confirms the presence of ...
openaire   +2 more sources

The massive multiple system HD 64315 [PDF]

open access: yes, 2017
The O6 Vn star HD 64315 is believed to belong to the star-forming region known as NGC 2467, but previous distance estimates do not support this association.
Evans, C. J.   +6 more
core   +5 more sources

Metabolic engineering of p‐hydroxybenzoate in poplar lignin

open access: yesPlant Biotechnology Journal, Volume 21, Issue 1, Page 176-188, January 2023., 2023
Summary Ester‐linked p‐hydroxybenzoate occurs naturally in poplar lignin as pendent groups that can be released by mild alkaline hydrolysis. These ‘clip‐off’ phenolics can be separated from biomass and upgraded into diverse high‐value bioproducts. We introduced a bacterial chorismate pyruvate lyase gene into transgenic poplar trees with the aim of ...
Yaseen Mottiar   +4 more
wiley   +1 more source

Asteroseismology of binary stars and a compilation of core overshoot and rotational frequency values of OB stars [PDF]

open access: yes, 2013
After a brief introduction into the asteroseismic modelling of stars, we provide a compilation of the current seismic estimates of the core overshooting parameter and of the rotational frequency of single and binary massive stars. These important stellar
Aerts, Conny
core   +2 more sources

The Mass-Radius(-Rotation?) Relation for Low-Mass Stars [PDF]

open access: yes, 2010
The fundamental properties of low-mass stars are not as well understood as those of their more massive counterparts. The best method for constraining these properties, especially masses and radii, is to study eclipsing binary systems, but only a small ...
Adam L. Kraus   +45 more
core   +2 more sources

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