Results 81 to 90 of about 41,311 (309)

Clearing the Dust from Globular Clusters

, 2008
Recent Spitzer observations of the globular cluster M15 detected dust associated with its intracluster medium. Surprisingly, these observations imply that the dust must be very short-lived compared to the time since the last Galactic plane crossing of ...
Binney, Boyer, Chatterjee, Dull, Frederic A. Rasio, Leigh, Lombardi, Mapelli, Mathis, McNamara, Nozawa, Pfahl, Ruffert, Ruffert, Sills, Slavin, Smith, Sourav Chatterjee, Stefan Umbreit   +18 more
core   +1 more source

Runaways collisions in nuclear stellar clusters

, 2022
Los cúmulos nucleares de estrellas son los sistemas estelares más densos de la naturaleza. El centro de las galaxias puede albergar un cúmulo nuclear de estrellas o un agujero negro supermasivo, también puede albergar ambos al mismo tiempo. El origen de los agujeros negros supermasivos y su evolución no está claro; aquí presentamos un nuevo escenario ...
Vergara, Marcelo, Escala, Andrés, Schleicher, Dominik, Reinoso, Bastián   +3 more
openaire   +1 more source

Removing Homocoupling Defects in Alkoxy/Alkyl‐PBTTT Enhances Polymer:Fullerene Co‐Crystal Formation and Stability

Advanced Functional Materials, EarlyView.
PBTTT‐OR‐R, a C14‐alkoxy/alkyl‐PBTTT polymer derivative, is of substantial interest for optoelectronics due to its specific fullerene intercalation behavior and enhanced charge‐transfer absorption. Comparing this polymer with (S) and without (O) homocoupling defects reveals that PBTTT‐OR‐R(O) forms stable co‐crystals with PC61BM, while PBTTT‐OR‐R(S ...
Zhen Liu, Jochen Vanderspikken, Paola Mantegazza, Stefania Moro, Mouna Hamid, Sigurd Mertens, Niko Van den Brande, Laurence Lutsen, Vincent Lemaur, David Beljonne, Giovanni Costantini, Koen Vandewal, Bruno Van Mele, Wouter Maes, Bart Goderis   +14 more
wiley   +1 more source

Evidence for a Catastrophically Disrupted Open Cluster

The Astrophysical Journal
Of the many discoveries uncovered by the Gaia astrometric mission, some of the most exciting are related to nearby dispersed stellar structures. We analyze one such structure in the Milky Way disk, OCSN-49, a coeval stellar stream with 257 identified ...
Alexis N. Miller, Kyle R. Tregoning, Jeff J. Andrews, Simon C. Schuler, Jason L. Curtis, Marcel A. Agüeros, Phillip A. Cargile, Julio Chanamé   +7 more
doaj   +1 more source

Chandra Observations of NGC 4438: An Environmentally Damaged Galaxy in the Virgo Cluster

, 2003
We present results from a 25 ksec CHANDRA ACIS-S observation of galaxies NGC4438 and NGC4435 in the Virgo Cluster. X-ray emission in NGC4438 is observed in a ~700 pc nuclear region, a 2.3 kpc spherical bulge, and a network of filaments extending 4-10 kpc
Argyle R. W., Bonatto C., Chincarini G., Christine Jones, Combes F., Hummel E., Marie E. Machacek, Miller R. H., Muller E., Nulsen P. J. E., Schindler S., William R. Forman   +11 more
core   +3 more sources

Stochastic processes, galactic star formation, and chemical evolution. Effects of accretion, stripping, and collisions in multiphase multi-zone models [PDF]

, 2005
This paper reports simulations allowing for stochastic accretion and mass loss within closed and open systems modeled using a previously developed multi-population, multi-zone (halo, thick disk, thin disk) treatment.
Casuso, Chiappini, Cignoni, Comins, Copi, Copi, D. Galli, de Mello, Feldman, Ferrini, Ferrini, Franco, G. Valle, Galli, Gerola, Grevesse, Hellsten, Hébard, Kroupa, Lejeune, Lubowich, Lynden-Bell, Matteucci, Pardi, Quilis, S. N. Shore, Schulman, Shore, Shore, Shore, Tinsley, Travaglio, Valle, Vidal-Madjar, Vollmer, Vollmer   +35 more
core   +2 more sources

Oblique Alfvén waves in a stellar wind environment with dust particles charged by inelastic collisions and by photoionization [PDF]

, 2022
L B De Toni, R. Gaelzer, L. F. Ziebell
openalex   +1 more source

Advancing Electronic Application of Coordination Solids: Enhancing Electron Transport and Device Integration via Surface‐Mounted MOFs (SURMOFs)

Advanced Functional Materials, EarlyView.
The layer‐by‐layer (LbL) assembly of coordination solids, enabled by the surface‐mounted metal‐organic framework (SURMOF) platform, is on the cusp of generating the organic counterpart of the epitaxy of inorganics. The programmable and sequential SURMOF protocol, optimized by machine learning (ML), is suited for accessing high‐quality thin films of ...
Zhengtao Xu, Christof Wöll, Stefan Bräse   +2 more
wiley   +1 more source

Evidences of Two Merging Elongated Filaments Associated with AGAL323.444+0.096 and Star Formation

The Astrophysical Journal
We study the structure, kinematics, and star-forming activity of filamentary cloud F-NE associated with AGAL323.444+0.096 using ^13 CO ( J = 2–1) molecular line and continuum data from the far-infrared to near-infrared.
Yingxiu Ma, Jianjun Zhou, Jarken Esimbek, Dalei Li, Andrej M. Sobolev, Xindi Tang, Willem Baan, Gang Wu, Macleod Gordon, Yuxin He, Ke Wang, Tie Liu, Dongdong Zhou, Kadirya Tursun, Dmitry A. Ladeyschikov, Weiguang Ji, Hailiang Shen   +16 more
doaj   +1 more source

Enhancing Direct Solar Water Splitting via ALD of Multifunctional TiO2/Pt Nanoparticle Coatings With Engineered Interfaces to GaAs/GaInP Tandem Cells

Advanced Functional Materials, EarlyView.
Multifunctional atomic layer deposited coatings and interface treatments enhance direct solar water splitting on GaAs/GaInP tandem cells. Optimized TiO2/Pt nanoparticle bilayers ensure durability and catalytic efficiency with minimal optical losses, while H2 plasma pretreatments maximize photovoltage and interfacial charge extraction.
Tim F. Rieth, Verena Streibel, Oliver Bienek, Sergej Levashov, Johannes Dittloff, Kristof Möller, Johanna Eichhorn, Matthias M. May, Ian D. Sharp   +8 more
wiley   +1 more source