Results 121 to 130 of about 1,000,727 (374)

Red Giant Stars in NGC 5128 [PDF]

, 2006
I present a selection of results obtained from VLT FORS1 and ISAAC photometric monitoring of late-type giants in NGC 5128 (=Centaurus A). The combination of optical and near-IR photometry allows to probe the full metallicity range of the stars on the upper red giant branch, thanks to combined low-metallicity sensitivity of the optical and high ...
openaire   +2 more sources

Optical Control of the Thermal Conductivity in BaTiO3

Advanced Functional Materials, EarlyView.
Light‐driven manipulation of thermal conductivity in archetypal ferroelectric, BaTiO3, offers a novel and effective approach for the dynamical control of the heat flux, with potential applications in thermal management and phonon‐based logic. Abstract Achieving dynamic control over thermal conductivity remains a formidable challenge in condensed matter
Claudio Cazorla, Carlos Escorihuela‐Sayalero, Jesús Carrete, Jorge Íñiguez‐González, Riccardo Rurali   +4 more
wiley   +1 more source

Formation, Survival, and Detectability of Planets Beyond 100 AU [PDF]

, 2009
Direct imaging searches have begun to detect planetary and brown dwarf companions and to place constraints on the presence of giant planets at large separations from their host star.
Adams, Armitage, Biller, Bonatto, Boss, Cai, Chambers, Chatterjee, de la Fuente Marcos, Dimitri Veras, Dodson-Robinson, Dones, Durisen, Eric B. Ford, Fabrycky, Ford, Ford, Ford, Ford, Fregeau, Garaud, Haisch, Heinze, Higuchi, Higuchi, Juric, Justin R. Crepp, Kalas, Kennedy, Lafrenière, Laughlin, Lecar, Levison, Macintosh, Macintosh, Marley, Marois, McCarthy, Mejía, Nielsen, Pan, Phillips, Rafikov, Rafikov, Scharf, Stamatellos, Thomess, Tremaine, Veras, Wright   +49 more
core   +2 more sources

DISRUPTION OF A RED GIANT STAR BY A SUPERMASSIVE BLACK HOLE AND THE CASE OF PS1-10jh [PDF]

, 2013
The development of a new generation of theoretical models for tidal disruptions is timely, as increasingly diverse events are being captured in surveys of the transient sky. Recently, Gezari et al.
T. Bogdanović, R. Cheng, P. Amaro-Seoane   +2 more
semanticscholar   +1 more source

Galactic Structure with Giant Stars

, 2021
The content of this thesis derives from three projects conducted during my Ph.D, focusing on both the Milky Way and the Magellanic Clouds. I deploy long period variables, especially Miras, as chronometers to study the evolution of Galactic structure over stellar age. I study red giants in the Magellanic Clouds, assign them photometric metallicities and
openaire   +2 more sources

Magnetic Mixing in Red Giant and Asymptotic Giant Branch Stars [PDF]

The Astrophysical Journal, 2008
The available information on isotopic abundances in the atmospheres of low-mass Red Giant Branch (RGB) and Asymptotic Giant Branch (AGB) stars requires that episodes of extensive mixing occur below the convective envelope, reaching down to layers close to the hydrogen burning shell (Cool Bottom Processing).
Sara Palmerini, Jason Nordhaus, Jason Nordhaus, Maurizio Busso, G. J. Wasserburg, Eric G. Blackman   +5 more
openaire   +5 more sources

Iridium Oxide Inverse Opal Anodes with Tailored Porosity for Efficient PEM Electrolysis

Advanced Functional Materials, EarlyView.
The synthesis of Iridium‐based Inverse Opals (Ir‐IO) is reported as electrocatalyst for Proton exchange membrane water electrolysis (PEM‐WE). Using the developed protocol it produces highly porous materials consisting either of metallic, oxidic Iridium or a combination thereof with large surface areas.
Sebastian Möhle, Matthias Kroschel, Peter Strasser   +2 more
wiley   +1 more source

Spinning up the Surface: Evidence for Planetary Engulfment or Unexpected Angular Momentum Transport?

The Astrophysical Journal, 2022
In this paper, we report the potential detection of a nonmonotonic radial rotation profile in a low-mass lower-luminosity giant star. For most low- and intermediate-mass stars, the rotation on the main sequence seems to be close to rigid.
Jamie Tayar, Facundo D. Moyano, Melinda Soares-Furtado, Ana Escorza, Meridith Joyce, Sarah L. Martell, Rafael A. García, Sylvain N. Breton, Stéphane Mathis, Savita Mathur, Vincent Delsanti, Sven Kiefer, Sabine Reffert, Dominic M. Bowman, Timothy Van Reeth, Shreeya Shetye, Charlotte Gehan, Samuel K. Grunblatt   +17 more
doaj   +1 more source

KELT-20b: A Giant Planet with a Period of P ∼ 3.5 days Transiting the V ∼ 7.6 Early A Star HD 185603 [PDF]

, 2017
We report the discovery of KELT-20b, a hot Jupiter transiting a early A star, HD 185603, with an orbital period of days. Archival and follow-up photometry, Gaia parallax, radial velocities, Doppler tomography, and AO imaging were used to confirm the ...
M. Lund, Joseph E. Rodriguez, G. Zhou, B. Gaudi, K. Stassun, Marshall C. Johnson, A. Bieryla, R. Oelkers, D. Stevens, K. Collins, K. Penev, S. Quinn, D. Latham, S. Villanueva, J. Eastman, J. Kielkopf, T. Oberst, E. Jensen, D. Cohen, M. Joner, D. Stephens, H. Relles, G. Corfini, J. Gregorio, R. Zambelli, G. Esquerdo, M. Calkins, P. Berlind, D. Ciardi, C. Dressing, Rahul I. Patel, P. Gagnon, E. Gonzales, T. Beatty, R. Siverd, J. Labadie-Bartz, R. Kuhn, K. Colón, D. James, J. Pepper, B. Fulton, K. McLeod, C. Stockdale, S. Novati, D. Depoy, A. Gould, J. Marshall, M. Trueblood, P. Trueblood   +48 more
semanticscholar   +1 more source

Breaking the Capacity Limit for WO3 Anode‐Based Li‐Ion Batteries Using Photo‐Assisted Charging

Advanced Functional Materials, EarlyView.
This image illustrates a photo‐assisted rechargeable lithium‐ion battery. (a) shows the battery structure, where light enhances electron‐hole generation in the anode, boosting ion flow. (b) compares discharging performance, revealing over 60% higher capacity under light compared to dark conditions, showcasing the benefit of light‐assisted energy ...
Rabia Khatoon, Mudasar Nazir, Richard T. Baker, Mathew Billing, Shumaila Babar, Suela Kellici, Steve Dunn, Muhammad Tariq Sajjad   +7 more
wiley   +1 more source