Results 81 to 90 of about 47,444 (303)

The Influence of Chromospheric Activity on Line Formation

The Astrophysical Journal
One of the primary sources of stellar spectral variability is magnetic activity. While our current understanding of chromospheric activity is largely derived from specific lines sensitive to chromospheric heating, such as the Ca ii H and K doublet ...
Mariela C. Vieytes, Lily L. Zhao, Megan Bedell   +2 more
doaj   +1 more source

The Radiation Environments of Middle-aged F-type Stars

The Astrophysical Journal, 2023
Far-ultraviolet (FUV) emission lines from dwarf stars are important driving sources of photochemistry in planetary atmospheres. Properly interpreting spectral features of planetary atmospheres critically depends on the emission of its host star.
F. Cruz Aguirre, K. France, N. Nell, N. Kruczek, B. Fleming, P. C. Hinton, S. Ulrich, P. R. Behr   +7 more
doaj   +1 more source

An Understanding of the Shoulder of Giants: Jovian Planets around Late K Dwarf Stars and the Trend with Stellar Mass [PDF]

, 2013
Analyses of exoplanet statistics suggest a trend of giant planet occurrence with host star mass, a clue to how planets like Jupiter form. One missing piece of the puzzle is the occurrence around late K dwarf stars (masses of 0.5-0.75Msun and effective ...
Fischer, Debra A., Gaidos, Eric, Howard, Andrew W., Mann, Andrew W.   +3 more
core   +5 more sources

Triboelectric Tactile Transducers for Neuromorphic Sensing and Synaptic Emulation: Materials, Architectures, and Interfaces

Advanced Energy and Sustainability Research, EarlyView.
Triboelectric nanogenerators are vital for sustainable energy in future technologies such as wearables, implants, AI, ML, sensors and medical systems. This review highlights improved TENG neuromorphic devices with higher energy output, better stability, reduced power demands, scalable designs and lower costs.
Ruthran Rameshkumar, Arunkumar Chandrasekhar, Poongundran Selvaprabhu   +2 more
wiley   +1 more source

FEAST: JWST/NIRCam View of the Resolved Stellar Populations of the Interacting Dwarf Galaxies NGC 4485 and NGC 4490

The Astrophysical Journal
We present new JWST/NIRCam observations of the interacting dwarf galaxy system NGC 4485–NGC 4490 (aka Arp 269), obtained as part of the Cycle 1 Feedback in Emerging Extragalactic Star Clusters (FEAST) program. NGC 4485 and NGC 4490 form the closest known
Giacomo Bortolini, Matteo Correnti, Angela Adamo, Michele Cignoni, Elena Sacchi, Monica Tosi, Göran Östlin, Anastasios Kapodistrias, Arjan Bik, Daniela Calzetti, Ana Duarte-Cabral, Flavia Dell’Agli, John S. Gallagher, Benjamin Gregg, Kathryn Grasha, Thomas S.-Y. Lai, Drew Lapeer, Sean T. Linden, Matteo Messa, Alex Pedrini, Elena Sabbi, Linda J. Smith, Helena Faustino Vieira, John M. Cannon, Salvador Duarte Puertas, Carmelle Robert   +25 more
doaj   +1 more source

Trumpeting M Dwarfs with CONCH-SHELL: a Catalog of Nearby Cool Host-Stars for Habitable ExopLanets and Life [PDF]

, 2014
We present an all-sky catalog of 2970 nearby ($d \lesssim 50$ pc), bright ($J< 9$) M- or late K-type dwarf stars, 86% of which have been confirmed by spectroscopy. This catalog will be useful for searches for Earth-size and possibly Earth-like planets by
A. Buccino, A. W. Mann, Akeson, Aldering, Apps, Asplund, Bacon, Berta, Berta, Bessell, Bochanski, Bochanski, Bohlin, Bohlin, Bond, Bonfils, Boyajian, Brown, Buton, Caffau, Casagrande, Christiansen, Cincunegui, Colón, Costa, Costa, Covey, Cruz, D. James, de Bruijne, Delfosse, Dittmann, Dotter, Dressing, E. Gaidos, E. J. Hilton, Fischer, Fressin, Frith, Fukugita, Gaidos, Gaidos, Gaidos, Gatewood, Gatewood, Gelman, Gizis, Güver, Hadden, Hamuy, Harrington, Henden, Henry, Henry, Horne, Howard, Høg, James, Janson, Jao, Jao, Johnson, Kharchenko, Khrutskaya, Kopparapu, Kopparapu, Lantz, Leggett, Lissauer, Lépine, Lépine, Lépine, M. Ansdell, Mahadevan, Mamajek, Mann, Mann, Mann, Mann, Mann, Marcy, Massey, Massey, McCook, Monet, Moorhead, Myers, Newton, Oke, P. Mauas, Pinsonneault, Quintana, Quirrenbach, R. Petrucci, Rajpurohit, Reid, Ricker, Riedel, Roeser, Rojas-Ayala, Rowe, S. Lépine, Santerne, Scargle, Schiavon, Schlaufman, Schönrich, Skrutskie, Smart, Sotin, Spencer Jones, Stassun, Swift, Tamura, Thibault, Tody, van Altena, van Leeuwen, Weiss, West, Wolfgang, Yuan, Zacharias   +122 more
core   +3 more sources

Creating Shared Value as an Antecedent of Value Co‐Creation: B2B Relationships in the Agri‐Food Sector

Agribusiness, EarlyView.
ABSTRACT This study analyzes the effects of value co‐creation and creation of shared value in agricultural input marketing. This study used a sample of 178 agricultural companies in Costa Rica. The data were analyzed using partial least squares structural equation modeling (PLS‐SEM) with SMART PLS software. Our findings reveal the significant influence
Luis Ricardo Solís‐Rivera, Marcelo Royo‐Vela   +1 more
wiley   +1 more source

Stellar populations and star formation histories in late-type dwarfs

, 2003
7 pages, 4 encapsulated .ps figures. Review presented at the "Stars in galaxies" meeting held in La Palma (Spain) in March 2003. Mem.S.A.It.
openaire   +2 more sources

Bayesian Optimization Guiding the Experimental Mapping of the Pareto Front of Mechanical and Flame‐Retardant Properties in Polyamide Nanocomposites

Advanced Intelligent Discovery, EarlyView.
Bayesian optimization enabled the design of PA56 system with just 8 wt% additives, achieving limiting oxygen index 30.5%, tensile strength 80.9 MPa, and UL‐94 V‐0 rating. Without prior knowledge, the algorithm uncovered synergistic effects between aluminum diethyl‐phosphinate and nanoclay.
Burcu Ozdemir, Miguel Hernández‐del‐Valle, Christina Schenk, De‐Yi Wang, Maciej Haranczyk   +4 more
wiley   +1 more source

Food inflation pass‐through from agricultural imports in a small open economy

American Journal of Agricultural Economics, EarlyView.
Abstract This paper develops a new framework for quantifying cost pass‐through in a small open economy by estimating firm‐level markup responses to agricultural import price shocks. We show theoretically that markup adjustments depend on firms' reliance on imported inputs and demand curvature, generating heterogeneous inflationary effects across firm ...
Minseong Kang, Seungki Lee
wiley   +1 more source