Search Results - "Rafael Garcia"

A prevalence of dynamo-generated magnetic fields in the cores of intermediate-mass stars by Stello, Dennis, Cantiello, Matteo, Fuller, Jim, Huber, Daniel, García, Rafael A., Bedding, Timothy R., Bildsten, Lars, Aguirre, Victor Silva

“…Suppression of dipolar oscillation modes by strong magnetic fields in the cores of intermediate-mass red giant stars reveals that powerful magnetic dynamos…”
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Weakened magnetic braking as the origin of anomalously rapid rotation in old field stars by van Saders, Jennifer L., Ceillier, Tugdual, Metcalfe, Travis S., Aguirre, Victor Silva, Pinsonneault, Marc H., García, Rafael A., Mathur, Savita, Davies, Guy R.

“…The age of a young to middle-aged star can be determined from how quickly or slowly it rotates, but the relationship breaks down for old stars; models now show…”
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CoRoT Reveals a Magnetic Activity Cycle in a Sun-Like Star by García, Rafael A, Mathur, Savita, Salabert, David, Ballot, Jérôme, Régulo, Clara, Metcalfe, Travis S, Baglin, Annie

“…The 11-year activity cycle of the Sun is a consequence of a dynamo process occurring beneath its surface. We analyzed photometric data obtained by the CoRoT…”
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TESS asteroseismology of the Kepler red giants by Stello, Dennis, Saunders, Nicholas, Grunblatt, Sam, Hon, Marc, Reyes, Claudia, Huber, Daniel, Bedding, Timothy R, Elsworth, Yvonne, García, Rafael A, Hekker, Saskia, Kallinger, Thomas, Mathur, Savita, Mosser, Benoit, Pinsonneault, Marc H

“…ABSTRACT Red giant asteroseismology can provide valuable information for studying the Galaxy as demonstrated by space missions like CoRoT and Kepler. However,…”
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Efficient removal of dyes from aqueous solutions using a novel hemoglobin/iron oxide composite by Essandoh, Matthew, Garcia, Rafael A.

“…Magnetic particles entrapped in different matrices that display high thermal stability, low toxicity, interactive functions at the surface, and high saturation…”
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Chemical Evolution in the Milky Way: Rotation-based Ages for APOGEE-Kepler Cool Dwarf Stars by Claytor, Zachary R., Saders, Jennifer L. van, Santos, Ângela R. G., García, Rafael A., Mathur, Savita, Tayar, Jamie, Pinsonneault, Marc H., Shetrone, Matthew

“…We use models of stellar angular momentum evolution to determine ages for ∼500 stars in the APOGEE-Kepler Cool Dwarfs sample. We focus on lower-main-sequence…”
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A search for red giant solar-like oscillations in all Kepler data by Hon, Marc, Stello, Dennis, García, Rafael A, Mathur, Savita, Sharma, Sanjib, Colman, Isabel L, Bugnet, Lisa

“…ABSTRACT The recently published Kepler mission Data Release 25 (DR25) reported on ∼197 000 targets observed during the mission. Despite this, no wide search…”
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Asteroseismology can reveal strong internal magnetic fields in red giant stars by Fuller, Jim, Cantiello, Matteo, Stello, Dennis, Garcia, Rafael A., Bildsten, Lars

“…Internal stellar magnetic fields are inaccessible to direct observations, and little is known about their amplitude, geometry, and evolution. We demonstrate…”
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Young α-enriched giant stars in the solar neighbourhood by Martig, Marie, Rix, Hans-Walter, Aguirre, Victor Silva, Hekker, Saskia, Mosser, Benoit, Elsworth, Yvonne, Bovy, Jo, Stello, Dennis, Anders, Friedrich, García, Rafael A., Tayar, Jamie, Rodrigues, Thaíse S., Basu, Sarbani, Carrera, Ricardo, Ceillier, Tugdual, Chaplin, William J., Chiappini, Cristina, Frinchaboy, Peter M., García-Hernández, D. A., Hearty, Fred R., Holtzman, Jon, Johnson, Jennifer A., Majewski, Steven R., Mathur, Savita, Mészáros, Szabolcs, Miglio, Andrea, Nidever, David, Pan, Kaike, Pinsonneault, Marc, Schiavon, Ricardo P., Schneider, Donald P., Serenelli, Aldo, Shetrone, Matthew, Zamora, Olga

“…We derive age constraints for 1639 red giants in the APOKASC sample for which seismic parameters from Kepler, as well as effective temperatures, metallicities…”
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A 4 Gyr M-dwarf Gyrochrone from CFHT/MegaPrime Monitoring of the Open Cluster M67 by Dungee, Ryan, van Saders, Jennifer, Gaidos, Eric, Chun, Mark, García, Rafael A., Magnier, Eugene A., Mathur, Savita, Santos, Ângela R. G.

“…We present stellar rotation periods for late K- and early M-dwarf members of the 4 Gyr old open cluster M67 as calibrators for gyrochronology and tests of…”
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Pine invasion impacts on plant diversity in Patagonia: invader size and invaded habitat matter by Franzese, Jorgelina, Urrutia, Jonathan, García, Rafael A., Taylor, Kimberley, Pauchard, Aníbal

“…Conifers, which are widely planted as fast growing tree crops, are invading forested and treeless environments across the globe, causing important changes in…”
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Testing asteroseismology with Gaia DR2: hierarchical models of the Red Clump by Hall, Oliver J, Davies, Guy R, Elsworth, Yvonne P, Miglio, Andrea, Bedding, Timothy R, Brown, Anthony G A, Khan, Saniya, Hawkins, Keith, García, Rafael A, Chaplin, William J, North, Thomas S H

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Core-Envelope Coupling in Intermediate-mass Core-helium Burning Stars by Tayar, Jamie, Beck, Paul G., Pinsonneault, Marc H., García, Rafael A., Mathur, Savita

“…Stars between two and three solar masses rotate rapidly on the main sequence, and the detection of slow core and surface rotation in the core-helium burning…”
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THE K2 GALACTIC ARCHAEOLOGY PROGRAM DATA RELEASE I: ASTEROSEISMIC RESULTS FROM CAMPAIGN 1 by Stello, Dennis, Zinn, Joel, Elsworth, Yvonne, Garcia, Rafael A., Kallinger, Thomas, Mathur, Savita, Mosser, Benoit, Sharma, Sanjib, Chaplin, William J., Davies, Guy, Huber, Daniel, Jones, Caitlin D., Miglio, Andrea, Aguirre, Victor Silva

“…NASA's K2 mission is observing tens of thousands of stars along the ecliptic, providing data suitable for large-scale asteroseismic analyses to inform galactic…”
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Reliability-Based Design of Urban Stormwater Detention Facilities with Random Carryover Storage by Segarra-García, Rafael

“…AbstractEvaluation of the operational efficiency of a stormwater detention facility may involve deterministic simulation or application of probabilistic models…”
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Review on Reaction Pathways in the Catalytic Upgrading of Biomass Pyrolysis Liquids by Pujro, Richard, García, Juan Rafael, Bertero, Melisa, Falco, Marisa, Sedran, Ulises

“…Bio-oils are the liquid products from the pyrolysis of biomass, which captured pronounced attention and showed relevance as an alternative source of fuels and…”
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Catalytic cracking of bio-oils improved by the formation of mesopores by means of Y zeolite desilication by García, Juan Rafael, Bertero, Melisa, Falco, Marisa, Sedran, Ulises

“…•The alkaline desilication of Y zeolite forms mesopores on the crystalline structure.•As-produced pine sawdust bio-oil was upgraded immediately on desilicated…”
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Preparation, characterization, and dye removal study of activated carbon prepared from palm kernel shell by García, Juan Rafael, Sedran, Ulises, Zaini, Muhammad Abbas Ahmad, Zakaria, Zainul Akmar

“…Palm oil mill wastes (palm kernel shell (PKS)) were used to prepare activated carbons, which were tested in the removal of colorants from water. The adsorbents…”
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Ecology and management of invasive Pinaceae around the world: progress and challenges by Nuñez, Martin A., Chiuffo, Mariana C., Torres, Agostina, Paul, Thomas, Dimarco, Romina D., Raal, Peter, Policelli, Nahuel, Moyano, Jaime, García, Rafael A., van Wilgen, Brian W., Pauchard, Aníbal, Richardson, David M.

“…Many species in the family Pinaceae are invaders. These species are relatively easy to control because of some of their intrinsic characteristics and because…”
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Do people care about pine invasions? Visitor perceptions and willingness to pay for pine control in a protected area by Bravo-Vargas, Valentina, García, Rafael A., Pizarro, J. Cristóbal, Pauchard, Aníbal

“…Tree invasions are increasing globally, causing major problems for biodiversity, ecosystem services and human well-being. In South America, conifer invasions…”
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