Results 71 to 80 of about 41,445 (309)

The Primary Flare Following a Stellar Collision in a Galactic Nucleus

The Astrophysical Journal Letters
High-velocity stellar collisions near supermassive black holes may result in a complete disruption of the stars. The initial disruption can have energies on par with supernovae and power a very fast transient.
Yuval Brutman, Elad Steinberg, Shmuel Balberg   +2 more
doaj   +1 more source

The pure non-collisional Blue Straggler population in the giant stellar system omega Centauri

, 2005
We have used high spatial resolution data from the Hubble Space Telescope and wide-field ground-based observations to search for blue straggler stars (BSS) over the entire radial extent of the large stellar system omega Centauri.
Bellazzini, M., Ferraro, F. R., Origlia, L., Pancino, E., Rood, R. T., Sollima, A.   +5 more
core   +2 more sources

Tidal spin-up of stars in dense stellar cusps around massive black holes [PDF]

, 2000
We show that main-sequence stars in dense stellar cusps around massive black holes are likely to rotate at a significant fraction of the centrifugal breakup velocity due to spin-up by hyperbolic tidal encounters. We use realistic stellar structure models
Brandt J. C., Genzel R., Gingold R. A., Kippenhahn R., Meylan G., Monaghan J. J., Pawan Kumar, Royczka M., Ruffert M., Schaerer D., Tal Alexander, Zahn J.-P.   +11 more
core   +3 more sources

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

Cloud–Cloud Collision and Cluster Formation in the W5-NW Complex

The Astronomical Journal
We present a detailed structural and gas kinematic study of the star-forming complex W5-NW. A cloud–cloud collision scenario unravels with evidence of collision-induced star and cluster formation.
Namitha Issac, Anindya Saha, Saanika Choudhary, Aakash Chaudhary, Anandmayee Tej, Hong-Li Liu, Tie Liu, Maheswar Gopinathan   +7 more
doaj   +1 more source

Frequency of Stellar Collisions in Three-Body Heating [PDF]

Symposium - International Astronomical Union, 1996
The probability for collisional interaction of three body binaries is calculated as a function of the physical radius and mass of the stellar objects and the depth of the cluster potential well. For typical cluster parameters, there is a significant chance of physical collision for objects as small as white dwarfs.
David F. Chernoff, Xiaolan Huang
openaire   +1 more source

Expanding Chemical Space of Nucleic Acid Nanoparticles for Tunable Antiviral‐Like Immunomodulatory Responses and Potent Adjuvant Activity

Advanced Functional Materials, EarlyView.
We introduce a nucleic acid nanoparticle (NANP) platform designed to be rrecognized by the human innate immune system in a regulated manner. By changing chemical composition while maintaining constant architectural parameters, we identify key determinants of immunorecognition enabling the rational design of NANPs with tunable immune activation profiles
Martin Panigaj, Hannah S. Newton, Jian Wang, Laxmi Pandey, Yelixza I. Avilla, Phong Nguyen, Morgan Chandler, Justin Halman, Yasmine Radwan, Stephanie Smith, Elijah Edmondson, Simone Difilippantonio, Chelsea Sanders, Bao Tran, Yongmei Zhao, Shaojun Xie, Edward Cedrone, Barry W. Neun, Meni Wanunu, Nikolay V. Dokholyan, Marina A. Dobrovolskaia, Kirill A. Afonin   +21 more
wiley   +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

Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics

Advanced Functional Materials, EarlyView.
Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha, Yingshan Ma, Yong Nam An, Sung‐Un An, Hyeon Hak Jung, Suvi‐Tuuli Varjamo, Jiwon Yoo, Junho Min, Hanvit Kim, Faisal Ahmed, Sang Hoon Chae, Young Min Song, Weiwei Cai, Tawfique Hasan, Zhipei Sun, Dong‐Ho Kang, Hyeon‐Jin Shin, Yunyun Dai, Hoon Hahn Yoon   +18 more
wiley   +1 more source

QPEs from EMRI Debris Streams Impacting Accretion Disks in Galactic Nuclei

The Astrophysical Journal
Quasi-periodic eruption (QPE) sources in galactic nuclei are often associated with a stellar object orbiting a supermassive black hole with an hours to days period, which is brought in as an extreme mass-ratio inspiral (EMRI).
Itai Linial, Brian D. Metzger, Eliot Quataert   +2 more
doaj   +1 more source