Results 41 to 50 of about 2,269 (304)

Stellar Atmospheric Parameters for Cool Dwarfs in Gaia Data Release 3

open access: yesThe Astrophysical Journal Supplement Series
We provide a catalog of atmospheric parameters for 1,806,921 cool dwarfs from Gaia Data Release 3 (DR3) that lie within the range covered by LAMOST cool dwarf spectroscopic parameters: 3200 K < T _eff < 4300 K, −0.8 < [M/H] < 0.2 dex, and 4.5 < log g < 5.
Cai-Xia Qu   +6 more
doaj   +1 more source

Radio burst statistics for M dwarf flare stars [PDF]

open access: yesAstronomy and Astrophysics Supplement Series, 1997
We present a critical analysis on the number of bursts near 21 cm from nine dMe flare stars of the solar neighborhood as reported in the literature. We compare our findings with the number of bursts detected with the Arecibo radiotelescope between 1989 and 1993, using a very reliable method to discriminate between stellar and artificial emissions.
M. Abada-Simon, M. Aubier
openaire   +1 more source

Aqueously Upcycled Lignin with Emergent Tribonegativity for Skin‐Integrated Triboelectronics

open access: yesAdvanced Materials, EarlyView.
Aqueously upcycled lignin is transformed into a printable ink that self‐assembles into a nanotextured surface during printing with the highest reported biopolymer‐based tribonegativity. The resulting skin‐integrated triboelectric sensor enables high‐fidelity cardiovascular monitoring and objective mental workload classification, demonstrating a ...
Robert Ccorahua‐Santo   +3 more
wiley   +1 more source

Stellar Cycle and Evolution of Polar Spots in an M+WD Binary

open access: yesThe Astrophysical Journal
Stellar activity cycles reveal continuous relaxation and induction of magnetic fields. The activity cycle is typically traced through the observation of cyclic variations in total brightness or Ca H&K emission flux of stars, as well as cyclic variations ...
Xinlin Zhao   +7 more
doaj   +1 more source

Coronal X-Ray Emission from Nearby, Low-mass, Exoplanet Host Stars Observed by the MUSCLES and Mega-MUSCLES HST Treasury Survey Projects

open access: yesThe Astronomical Journal, 2023
The high-energy X-ray and ultraviolet (UV) radiation fields of exoplanet host stars play a crucial role in controlling the atmospheric conditions and the potential habitability of exoplanets.
Alexander Brown   +10 more
doaj   +1 more source

The SDSS White Dwarf - M Star Library

open access: yes, 2011
to appear in the ASP Conference Series on "Evolution of Compact Binaries" (ESO), Vi\~na del Mar ...
Heller, René   +2 more
openaire   +2 more sources

The Vegan Villain Sets Out to The End of Summer: Functionalized Coatings as Biohybrid UV‐Sensors

open access: yesAdvanced Materials Interfaces, EarlyView.
This study introduces biohybrid coatings incorporating E. coli biomass expressing photoconvertible fluorescent proteins as UV‐A responsive elements. Upon irradiation at 400 nm, the coatings exhibit an irreversible fluorescence shift from green to red within 15 min. Notably, the photoconversion capability is retained after >1 year of storage.
Amelie Skopp   +3 more
wiley   +1 more source

EDGE-INFERNO: Simulating Every Observable Star in Faint Dwarf Galaxies and Their Consequences for Resolved-star Photometric Surveys

open access: yesThe Astrophysical Journal
Interpretation of data from faint dwarf galaxies is made challenging by observations limited to only the brightest stars. We present a major improvement to tackle this challenge by undertaking zoomed cosmological simulations that resolve the evolution of
Eric P. Andersson   +6 more
doaj   +1 more source

The Importance of the Upper Atmosphere to CO/O2 Runaway on Habitable Planets Orbiting Low-mass Stars

open access: yesThe Astrophysical Journal Letters, 2023
Efforts to spectrally characterize the atmospheric compositions of temperate terrestrial exoplanets orbiting M dwarf stars with JWST are now underway.
Sukrit Ranjan   +4 more
doaj   +1 more source

Treatment with Plasma Activated (Salt) Water Sterilizes Macromolecular Coatings While Maintaining Their Integrity and Functionality

open access: yesAdvanced Materials Interfaces, EarlyView.
PDMS samples were covalently coated with mucin glycoproteins and then treated with either plasma activated water (PAW) or saline (PAS) as a means of disinfection. The samples could be successfully sterilized without compromising the structural integrity or functionality of those coatings.
Bernardo Miller Naranjo   +4 more
wiley   +1 more source

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