Results 101 to 110 of about 59,650 (323)

The XO Planetary Survey Project - Astrophysical False Positives

open access: yes, 2010
Searches for planetary transits find many astrophysical false positives as a by-product. There are four main types analyzed in the literature: a grazing-incidence eclipsing binary star, an eclipsing binary star with a small radius companion star, a blend
Beatty   +24 more
core   +1 more source

Actin Isovariant ACT2‐Mediated Cellular Auxin Homeostasis Regulates Lateral Root Organogenesis in Arabidopsis thaliana

open access: yesCytoskeleton, EarlyView.
ABSTRACT Lateral root (LR) organogenesis is regulated by cellular flux of auxin within pericycle cells, which depends on the membrane distribution and polar localization of auxin carrier proteins. The correct distribution of auxin carrier proteins relies on the intracellular trafficking of these proteins aided by filamentous actin as a track.
Aya Hanzawa   +2 more
wiley   +1 more source

TESS Light Curve of the Interacting Binary W Serpentis

open access: yesThe Astronomical Journal
The unusal light curve of the massive eclipsing binary W Ser was recently observed with high S/N and fast cadence by the NASA TESS mission. The TESS light curve records two eclipses and relatively fast variations outside of the eclipses.
Douglas R. Gies   +3 more
doaj   +1 more source

On The Period Determination of ASAS Eclipsing Binaries

open access: yes, 2013
Variable stars, or particularly eclipsing binaries, are very essential astronomical occurrence. Surveys are the backbone of astronomy, and many discoveries of variable stars are the results of surveys.
Mayangsari, Lidia   +2 more
core   +1 more source

In Vitro Live Cell Imaging Reveals Nuclear Dynamics and Role of the Cytoskeleton During Asymmetric Division of Pollen Mitosis I in Nicotiana Benthamiana

open access: yesCytoskeleton, EarlyView.
ABSTRACT Pollen is a male gametophyte of angiosperms. Following meiosis, the microspore undergoes an asymmetric division called pollen mitosis I (PMI), which produces two cells of different sizes: a large vegetative cell and a small generative cell. Polarized nuclear migration and positioning during PMI are important for successful pollen development ...
Yoko Mizuta   +5 more
wiley   +1 more source

KM UMa: An Active Short-period Detached Eclipsing Binary in a Hierarchical Quadruple System

open access: yesThe Astrophysical Journal
The first detailed photometric and spectroscopic analysis of the G-type eclipsing binary KM UMa is presented, which indicates that the system is a short-period detached eclipsing binary.
Fangbin Meng   +6 more
doaj   +1 more source

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   +1 more source

Photometric Solutions for Detached Eclipsing Binaries: selection of ideal distance indicators in the SMC

open access: yes, 2001
Detached eclipsing binary stars provide a robust one-step distance determination to nearby galaxies. As a by-product of Galactic microlensing searches, catalogs of thousands of variable stars including eclipsing binaries have been produced by the OGLE ...
Barnes T. G.   +10 more
core   +2 more sources

Evaluation of Different Detection and Identification Methods of Intact Tetrahydro‐Methyltestosterone Sulfate Metabolites in Doping Control

open access: yesDrug Testing and Analysis, EarlyView.
The micro‐scale synthesis of the six out of eight possible tetrahydro‐methyltestosterone sulfate metabolites was performed, and the synthesized materials were used as analytical standards. The analysis of post‐administration sample extracts from methyltestosterone excretion studies against these standards provides further experimental proof for their ...
Yiannis S. Angelis   +3 more
wiley   +1 more source

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