Results 111 to 120 of about 765,419 (288)
PHASES: Opto-mechanical solutions to perform absolute spectrophotometry from space
EPJ Web of Conferences, 2013 This work provides an update of the current status of PHASES, which is a project aimed at developing a space-borne telescope to perform absolute flux calibrated spectroscopy of bright stars.
Vather Dinesh +2 more
doaj +1 more source
Close-in planet induces flares on its host star
NatureIn the past decade, hundreds of exoplanets have been discovered in extremely short orbits below 10 days. Unlike in the Solar System, planets in these systems orbit their host stars close enough to disturb the stellar magnetic field lines. The interaction can enhance the star's magnetic activity, such as its chromospheric and radio emission, or flaring.
Ekaterina Ilin +6 more
openaire +4 more sources
A complete census of planet-hosting binaries
International audienceAims. Estimating the effect that binarity can have on planet formation is of crucial importance, as almost half of field stars reside in multiple systems.
P. Thebault +3 more
core +1 more source
Multimodal Mixed Reality for In‐Field Visualization of RGB‐Based Vegetation Indices
Advanced Intelligent Systems, EarlyView.Evaluating crop physiological health in field environments remains constrained by offline data processing or static 2D displays, limiting real‐time spatial interpretation. This paper presents a novel mixed reality framework that calculates, normalizes, and visualizes 20 RGB‐based vegetation indices directly in agricultural fields using consumer‐grade ...
Caio Mucchiani, Konstantinos Karydis
wiley +1 more source
Secular Resonances in Planet-hosting Binary Stars. I. General Theory
The Astronomical JournalMotivated by the diversity of circumstellar planets in binary stars and the strong effects of the secular resonances of Jupiter and Saturn on the formation and architecture of the inner solar system, we have launched an expansive project on studying the ...
Nader Haghighipour, Michael Andrew
doaj +1 more source
American Journal of Community Psychology, EarlyView.Abstract This study employs a schizocartographic approach to explore community narratives of space, memory, and violence in Kraaifontein, Cape Town. Through participants' accounts, ordinary places—gardens, shops, blocks, sports grounds, and streets—emerge as ambivalent geographies where trauma, resilience, and belonging intersect.
Guido Veronese +2 more
wiley +1 more source
The Case for Edge-on Binaries: An Avenue Toward Comparative Exoplanet Demographics
The Astrophysical Journal LettersMost Sun-like and higher-mass stars reside in systems that include one or more gravitationally bound stellar companions. These systems offer an important probe of planet formation in the most common stellar systems, while also providing key insights into
Joseph E. Hand +2 more
doaj +1 more source
OWLS. I. The Olin Wilson Legacy Survey
The Astrophysical JournalWe present initial results from a planned 10 yr survey of Ca II H and K emission, using observations made with the Astrophysical Research Consortium 3.5 m Telescope at Apache Point Observatory.
Brett M. Morris +4 more
doaj +1 more source
The Abundance Distribution in the Extrasolar-Planet Host Star HD 19994
The Astronomical Journal, 2001 Abundances of 22 elements have been determined from a high-resolution, high signal-to-noise spectrum of HD19994, a star recently announced as harboring an extrasolar planet. A detailed spectroscopic analysis of this stars finds it to have a mass of 1.2+/-0.1Msun. HD19994 is found to be slightly enriched in "metals" relative to the Sun 9[Fe/H]=+0.09+/-0.
Smith, Verne V. +2 more
openaire +2 more sources
Angewandte Chemie, EarlyView.An electron bridge strategy is developed to regulate charge polarization in Pd1 and Ni1 dual single‐atom sites, promoting CO2 reduction, nitrate reduction, and C–N coupling simultaneously. The resulting catalyst achieves efficient urea electrosynthesis with high activity and record durability over 1700 h.
Fan Wu +11 more
wiley +1 more source