Results 111 to 120 of about 31,620 (294)

Runaway accretion of metals from compact debris disks onto white dwarfs

, 2011
It was recently proposed that metal-rich white dwarfs (WDs) accrete their metals from compact debris disks found to exist around more than a dozen of them.
Bai, Balbus, Brinkworth, Cuzzi, Debes, Dobrovolskis, Drell, Dupuis, Ehrenreich, Farihi, Farihi, Fleming, Friedjung, Goldreich, Graham, Gurevich, Gänsicke, Gänsicke, Gänsicke, Hawley, Jura, Jura, Jura, Jura, Lynden Bell, Melis, Meyer, Pringle, Rafikov, Roman R. Rafikov, Schlichting, Shakura, Weidenschilling, Zuckerman   +33 more
core   +1 more source

Senomorphic Small Extracellular Vesicles Delivered by a Tissue‐Adhesive α‐Lipoic‐Acid Hydrogel Enable Immuno‐Rejuvenation for Bone‐Tendon Interface Regeneration

Advanced Science, EarlyView.
This work identifies M1 macrophage‐mediated inflammation as a key driver of BMSC senescence and bone microstructural deterioration at the enthesis. A tissue‐adhesive hydrogel delivering senomorphic small extracellular vesicles suppresses this inflammatory‐senescent cascade and enhances BMSC resilience by inhibiting the cGAS‐STING‐NF‐κB pathway.
Lingzhi Kong, Wei Song, Wencai Liu, Hui Xu, Yuhao Yu, Xinyue Yang, Haiyan Li, Yanlun Zhu, Yaohua He   +8 more
wiley   +1 more source

Probing the Era of Giant Collisions: Millimeter Observations of the HD 166191 System

The Astrophysical Journal
We present nonsimultaneous Atacama Large Millimeter/submillimeter Array (ALMA) Band 7 and Submillimeter Array (SMA) observations of the HD 166191 disk, which was recently thought to have a collision in its terrestrial planet zone.
Kadin Worthen, Christine H. Chen, A. Meredith Hughes, Brandon C. Johnson, Isabel Rebollido, Diego E. Garcia, Jamar Kittling, Carey M. Lisse   +7 more
doaj   +1 more source

A search for debris disks in the Herschel-ATLAS [PDF]

, 2010
Aims. We aim to demonstrate that the Herschel-ATLAS (H-ATLAS) is suitable for a blind and unbiased survey for debris disks by identifying candidate debris disks associated with main sequence stars in the initial science demonstration field of the survey.
Thompson, M. A., Vieiria, J.
core  

Dust outflows and inner gaps generated by massive planets in debris disks

, 2005
Main sequence stars are commonly surrounded by debris disks, formed by cold far-IR-emitting dust that is thought to be continuously replenished by a reservoir of undetected dust-producing planetesimals.
Malhotra, R., Moro-Martin, A.
core   +2 more sources

Plant‐Derived Melatonin Inhibits Bacterial Virulence via CpxA/R Two‐Component System

Advanced Science, EarlyView.
Plant‐derived melatonin is sensed by CpxAE48/T51, which inhibits the phosphorylation cascade transmission from CpxAH240 to CpxRD52, resulting in the inhibition of DNA‐binding capacity of CpxR and subsequent T3SS genes expression in Pst DC3000. ABSTRACT In defending against pathogens, plants deploy diverse secondary metabolites and signaling molecules ...
Jin‐Wei Wei, Wei Liu, Bili Cao, Dan Zhao, Chengqiang Wang, Xin Hou, Tangyuan Ning, Biao Gong   +7 more
wiley   +1 more source

ASASSN-24fw: Candidate Gas-rich Circumsecondary Disk Occultation of a Main-sequence Star

The Astronomical Journal
Dusty disks around planetary and substellar companions in outer reaches of exoplanetary systems can be detected as long-lasting occultations, provided the observer is close to the secondary’s orbital plane. Here we report optical spectroscopy with KOSMOS
Nadia L. Zakamska, Gautham Adamane Pallathadka, Dmitry Bizyaev, Jaroslav Merc, James E. Owen, Henrique Reggiani, Kevin C. Schlaufman, Karolina Bąkowska, Sławomir Bednarz, Krzysztof Bernacki, Agnieszka Gurgul, Kirsten R. Hall, Franz-Josef Hambsch, Barbara Joachimczyk, Krzysztof Kotysz, Sebastian Kurowski, Alexios Liakos, Przemysław J. Mikołajczyk, Erika Pakštienė, Grzegorz Pojmański, Adam Popowicz, Daniel E. Reichart, Łukasz Wyrzykowski, Justas Zdanavičius, Michał Żejmo, Paweł Zieliński, Staszek Zola   +26 more
doaj   +1 more source

Soft Artificial Ciliary Brush with Integrated Haptic Feedback for Efficient Airway Mucus Cleaning

Advanced Intelligent Systems, EarlyView.
A fundamental mucus cleaning mechanism is reported, which utilizes both artificial cilia mechanical sweeping and suction‐based mucus cleaning. A novel haptic feedback interface for the artificial cilia provides touch feedback on tissue contact, enhancing operator control and safety.
Zhongming Lyu, Yusheng Wang, Ruijian Ge, Darren Wang, Matthew Bacchetta, Caitlin T. Demarest, Fabien Maldonado, Xiaoguang Dong   +7 more
wiley   +1 more source

Forecasting Catastrophe: Constraints on the Fomalhaut Main-belt Planetesimal Population from Observed Collisional Remnants

The Astrophysical Journal Letters
Catastrophic planetesimal disruptions offer a unique opportunity to study and characterize large planetesimal populations in exoplanetary systems that are not currently detectable by modern observatories.
Arin M. Avsar, Kevin Wagner, Dániel Apai, Christopher C. Stark, Isabel Rebollido   +4 more
doaj   +1 more source

Repeating Nuclear Transients From Repeating Partial Tidal Disruption Events

Astronomische Nachrichten, EarlyView.
ABSTRACT Extragalactic nuclear transients that exhibit repeating outbursts can be modeled as the repeated dynamical interaction between bound stars and supermassive black holes (SMBHs). A subset of these transients, with recurrence timescales of months‐to‐years, have been explained as accretion flares from the repeated tidal stripping of a star by an ...
Ananya Bandopadhyay, Eric R. Coughlin, Julia Fancher, C. J. Nixon, Dheeraj R. Pasham   +4 more
wiley   +1 more source