Results 101 to 110 of about 1,796 (169)

Speckle statistics in adaptive optics images at visible wavelengths

open access: yes, 2017
Residual speckles in adaptive optics (AO) images represent a well-known limitation on the achievement of the contrast needed for faint source detection. Speckles in AO imagery can be the result of either residual atmospheric aberrations, not corrected by
Bailey, Vanessa P   +13 more
core   +1 more source

The HOSTS Survey—Exozodiacal Dust Measurements for 30 Stars [PDF]

open access: yes, 2018
The Hunt for Observable Signatures of Terrestrial Systems survey searches for dust near the habitable zones (HZs) around nearby, bright main-sequence stars. We use nulling interferometry in the N band to suppress the bright stellar light and to probe for
Beichman, C.   +2 more
core   +1 more source

Shocks, Winds, and a Torus: the Large Binocular Telescope Interferometer (LBTI) Resolves the Active Nucleus of NGC 4151

open access: yesThe Astrophysical Journal
We present mid-infrared (MIR) observations of the Seyfert 1 galaxy NGC 4151 using the Large Binocular Telescope Interferometer (LBTI). We took open-loop Fizeau images with 66–104 mas (5.8–9.1 pc) resolution in the N -band (at 8.7 and 10.5  μ m), using ...
Jacob W. Isbell   +14 more
doaj   +1 more source

Dill Extract Induces Elastic Fiber Neosynthesis and Functional Improvement in the Ascending Aorta of Aged Mice with Reversal of Age-Dependent Cardiac Hypertrophy and Involvement of Lysyl Oxidase-Like-1

open access: yesBiomolecules, 2020
Elastic fibers (90% elastin, 10% fibrillin-rich microfibrils) are synthesized only in early life and adolescence mainly by the vascular smooth muscle cells through the cross-linking of its soluble precursor, tropoelastin.
Wassim Fhayli   +7 more
doaj   +1 more source

High Contrast Imaging in the Visible: First Experimental Results at the Large Binocular Telescope

open access: yes, 2016
In February 2014, the SHARK-VIS (System for High contrast And coronography from R to K at VISual bands) Forerunner, a high contrast experimental imager operating at visible wavelengths, was installed at LBT (Large Binocular Telescope).
Ambrosino, A.   +15 more
core   +1 more source

Thermal Infrared Imaging of Protoplanetary Disks and Substellar Companions with LBTI

open access: yes, 2020
The ESO/Breakthrough-sponsored New Earths in the Alpha Centauri Region (NEAR) program recently completed the first ultra-deep stare on Alpha Centauri with the upgraded VISIR-NEAR instrument. In this talk, I will describe the data reduction and scientific results of the NEAR campaign, with a focus on challenges within the existing data and how ...
openaire   +1 more source

Protocol for a cluster randomised control trial evaluating the efficacy and safety of treatment for latent tuberculosis infection in recent migrants within primary care: the CATAPuLT trial

open access: yesBMC Public Health, 2019
Background The identification and treatment of LTBI is a key component of the WHO’s strategy to eliminate TB. Recent migrants from high TB-incidence countries are recognised to be at risk TB reactivation, and many high-income countries have focused on ...
M. Burman   +10 more
doaj   +1 more source

Circumstellar discs: What will be next?

open access: yes, 2017
This prospective chapter gives our view on the evolution of the study of circumstellar discs within the next 20 years from both observational and theoretical sides.
A Boccaletti   +256 more
core   +1 more source

Theoretical Spectra and Atmospheres of Extrasolar Giant Planets

open access: yes, 2002
We present a comprehensive theory of the spectra and atmospheres of irradiated extrasolar giant planets. We explore the dependences on stellar type, orbital distance, cloud characteristics, planet mass, and surface gravity.
Adam Burrows   +20 more
core   +1 more source

The HOSTS survey for exo-zodiacal dust: preliminary results and future prospects [PDF]

open access: yes, 2018
The presence of large amounts of dust in the habitable zones of nearby stars is a significant obstacle for future exo-Earth imaging missions. We executed the HOSTS (Hunt for Observable Signatures of Terrestrial Systems) survey to determine the typical ...
Beichman, C.   +2 more
core  

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