Results 81 to 90 of about 248,213 (282)
The Astronomical Journal, 2023 We report on a detailed abundance study of six bright, mostly southern, slowly rotating late B-stars: HD 1279 (B8III), HD 99803 (B9V), HD 123445 (B9V), HD 147550 (B9V), HD 171961 (B8III), and HD 202671 (B5II/III), hitherto reported as normal stars.
Richard Monier +12 more
doaj +1 more source
Quantitative spectroscopy of close binary stars [PDF]
, 2011 The method of spectral disentangling has now created the opportunity for studying the chemical composition in previously inaccessible components of binary and multiple stars.
Brogaard +35 more
core +1 more source
K2 DISCOVERY OF YOUNG ECLIPSING BINARIES IN UPPER SCORPIUS: DIRECT MASS AND RADIUS DETERMINATIONS FOR THE LOWEST MASS STARS AND INITIAL CHARACTERIZATION OF AN ECLIPSING BROWN DWARF BINARY [PDF]
, 2015 We report the discovery of three low-mass double-lined eclipsing binaries in the pre-main sequence Upper Scorpius association, revealed by K2 photometric monitoring of the region over ∼78 days. The orbital periods of all three systems are , M 2 = 0.1076
T. David +4 more
semanticscholar +1 more source
D2HGDH Deficiency Regulates Seizures through GSH/Prdx6/ROS‐Mediated Excitatory Synaptic Activity
Advanced Science, EarlyView.Downregulating D‐2‐hydroxyglutarate dehydrogenase (D2HGDH) increases epilepsy susceptibility by altering reactive oxygen species (ROS) levels and synaptic function, contributing to oxidative stress in neurons. The acid calcium‐independent phospholipase A2 (aiPLA2) inhibitor MJ33 restores glutathione reduced/glutathione oxidized balance, reducing ROS ...
Zhijuan Zhang +14 more
wiley +1 more source
MASS TRANSFER IN ECLIPSING BINARY STARS
Odessa Astronomical Publications, 2017 Analysis of the properties of the eclipsing binary stars shows, that the stream-like mechanism of the mass transfer switches on at a contact evolutionary stage, preceding to a stage of binaries with a subgiant.
V. G. Karetnikov +2 more
doaj +1 more source
Eclipsing Binaries: Tools for Calibrating the Extragalactic Distance Scale [PDF]
, 2006 In the last decade, over 7000 eclipsing binaries have been discovered in the Local Group through various variability surveys. Measuring fundamental parameters of these eclipsing binaries has become feasible with 8 meter class telescopes, making it possible to use eclipsing binaries as distance indicators.
arxiv +1 more source
EXPECTED LARGE SYNOPTIC SURVEY TELESCOPE (LSST) YIELD OF ECLIPSING BINARY STARS [PDF]
, 2011 In this paper, we estimate the Large Synoptic Survey Telescope (LSST) yield of eclipsing binary stars, which will survey ∼20,000 deg2 of the southern sky during a period of 10 years in six photometric passbands to r ∼ 24.5.
A. Prša, J. Pepper, K. Stassun
semanticscholar +1 more source
Unwrapping the Ciliary Coat: High‐Resolution Structure and Function of the Ciliary Glycocalyx
Advanced Science, EarlyView.The ciliary membrane is decorated in glycosylated proteins that define the interaction of the cilium with its environment. The main component of the ciliary coat of the green alga Chlamydomonas reinhardtii, FMG1, is characterized by cryo‐electron microscopy, proteomics, and live cell microscopy with flow‐based adhesion assays.
Lara M. Hoepfner +8 more
wiley +1 more source
Photometric analysis of eclipsing binary stars
Iraqi Journal of Physics, 2019 In this paper, photometric analysis of two short period group of the eclipsing binaries (RS CVn); RT And and BH Vir is presented. New physical and geometric parameters were obtained by performing two computer modeling.
Bushra Qassim AL-Abudi
doaj +1 more source
Study of spider pulsar binary eclipses and discovery of an eclipse mechanism transition [PDF]
, 2020 We present a comparative study of the low-frequency eclipses of spider (compact, irradiating binary) PSRs B1957+20 and J1816+4510. Combining these data with those of three other eclipsing systems we study the frequency dependence of the eclipse duration.
arxiv +1 more source