Results 121 to 130 of about 56,963 (291)

TIC 290061484: A Triply Eclipsing Triple System with the Shortest Known Outer Period of 24.5 Days

open access: yesThe Astrophysical Journal
We have discovered a triply eclipsing triple-star system, TIC 290061484, with the shortest known outer period, P _out , of only 24.5 days. This “eclipses” the previous record set by λ Tauri at 33.02 days, which held for 68 yr.
V. B. Kostov   +15 more
doaj   +1 more source

Charge‐Assisted Hydrogen‐Bonded Organic Frameworks: From Crystal Engineering to Multifunctional Materials

open access: yesChemistry–Methods, EarlyView.
This review briefly highlights the construction of charge‐assisted hydrogen‐bonded organic frameworks using a variety of organic acids and organic bases, which feature different hydrogen‐bonding motifs, along with their applications, including negative linear compressibility, proton conduction, atmospheric water harvesting, gas adsorption and ...
Xian‐Xian Xiao   +5 more
wiley   +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

The Discovery of Two Quadruple Star Systems with the Second and Third Shortest Outer Periods

open access: yesThe Astrophysical Journal
We present the discovery of two quadruple star systems—TIC 285853156 and TIC 392229331—each consisting of two bound eclipsing binary stars. Among the most compact quadruples known, TIC 392229331 and TIC 285853156 have the second and third shortest outer ...
Brian P. Powell   +14 more
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

Crystallinity‐Enhanced CO2 Adsorption by Sodium Poly(Heptazine Imide) Frameworks

open access: yesChemSusChem, Accepted Article.
This work presents sodium poly(heptazine imide) (NaPHI)‐based materials, synthesized in a NaCl medium, as highly effective platforms for CO₂ capture. High crystallinity— an often‐overlooked aspect in PHI frameworks—is identified as a key factor governing CO₂ adsorption capacity in microporous structures.
Pedro Ouro   +12 more
wiley   +1 more source

The contribution of secondary eclipses as astrophysical false positives to exoplanet transit surveys

open access: yes, 2013
We investigate in this paper the astrophysical false-positive configuration in exoplanet-transit surveys that involves eclipsing binaries and giant planets which present only a secondary eclipse, as seen from the Earth.
Almenara, J. -M.   +5 more
core   +3 more sources

A Low Metallicity Massive Contact Binary Star System Candidate in WLM Identified by Hubble and James Webb Space Telescope Imaging

open access: yesThe Astrophysical Journal
We present archival Hubble Space Telescope (HST) and JWST ultraviolet through near-infrared time series photometric observations of a massive minimal-contact binary candidate in the metal-poor galaxy Wolf–Lundmark–Melotte ( Z  = 0.14 Z _⊙ ).
Maude Gull   +17 more
doaj   +1 more source

New times of minima of some eclipsing binary stars

open access: yesInformation Bulletin on Variable Stars, 2017
We present several CCD minima observations of eclipsing binaries.
Bulut, I.   +9 more
openaire   +6 more sources

Comparing Different Light Models for Virtual Electrodes in Optoelectronic Tweezers

open access: yesELECTROPHORESIS, EarlyView.
ABSTRACT Optoelectronic tweezers (OET) allow for the physical manipulation of particles of interest via dielectrophoresis (DEP) in microfluidic devices. To produce the nonuniform electric field required to enable DEP, light is used to expose a photoconductive film and create a so‐called virtual electrode (VE).
Ernesto Guzman‐Saleh   +2 more
wiley   +1 more source

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