Results 61 to 70 of about 584,793 (309)

Massive Debris Disks May Hinder Secular Stirring by Planetary Companions: An Analytic Proof of Concept

The Astrophysical Journal
Debris disks or exo-Kuiper belts, detected through their thermal or scattered emission from their dusty components, are ubiquitous around main-sequence stars.
Antranik A. Sefilian
doaj   +1 more source

ALMA Resolves C i Emission from the β Pictoris Debris Disk [PDF]

Astrophysical Journal, 2018
The debris disk around β Pictoris is known to contain gas. Previous ALMA observations revealed a CO belt at ∼85 au with a distinct clump, interpreted as a location of enhanced gas production. Photodissociation converts CO into C and O within ∼50 a.
G. Cataldi, A. Brandeker, Yanqin Wu, Christine H. Chen, W. Dent, B. D. Vries, I. Kamp, R. Liseau, G. Olofsson, E. Pantin, A. Roberge   +10 more
semanticscholar   +1 more source

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

Molecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

Dust production in the debris disk around HR 4796 A [PDF]

Astronomy & Astrophysics, 2019
Context. Debris disks are the natural by-products of the planet formation process. Scattered or polarized light observations are mostly sensitive to small dust grains that are released from the grinding down of bigger planetesimals. Aims.
J. Olofsson, J. Milli, P. Thebault, Q. Kral, F. Ménard, M. Janson, J. Augereau, Amelia Bayo, J. Beam'in, T. Henning, D. Iglesias, G. Kennedy, M. Montesinos, N. Pawellek, M. R. Schreiber, C. Zamora, M. Carbillet, P. Feautrier, Thierry Fusco, F. Madec, P. Rabou, A. Sevin, J. Szulágyi, A. Zurlo   +23 more
semanticscholar   +1 more source

Effects of Carbon Nanoparticles on Triboelectro‐Induced Surface Defects

Advanced Engineering Materials, EarlyView.
Carbon nanoparticles added to grease modify the electrocontact behavior. The synergy of particle concentration and electric current dominates the surface damage of metals in contact. Electrical surface damage caused by current leakage is a critical challenge in high‐performance applications such as electric vehicle (EV) drivetrains and wind turbine ...
Mohsen Tajedini, Lu Fang, Jacob Bons, Mohammad Humaun Kabir, Evan Johnson, Joe Kosmoski, Hong Liang   +6 more
wiley   +1 more source

JWST/MIRI Imaging of the Warm Dust Component of the ϵ Eridani Debris Disk

The Astronomical Journal
We present JWST/MIRI observations of the debris disk surrounding the nearby solar analog ϵ Eridani obtained as part of the Archetypal Debris Disk Guaranteed Time Observation program. Multiwavelength images from 15, 18, 21, and 25.5 μ m show a smooth dust
Schuyler G. Wolff, András Gáspár, George Rieke, Jarron M. Leisenring, Antranik A. Sefilian, Marie Ygouf, Jorge Llop-Sayson   +6 more
doaj   +1 more source

Testing the Interaction between a Substellar Companion and a Debris Disk in the HR 2562 System

The Astronomical Journal, 2023
The HR 2562 system is a rare case where a brown dwarf companion resides in a cleared inner hole of a debris disk, offering invaluable opportunities to study the dynamical interaction between a substellar companion and a dusty disk.
Stella Yimiao Zhang, Gaspard Duchêne, Robert J. De Rosa, Megan Ansdell, Quinn Konopacky, Thomas Esposito, Eugene Chiang, Malena Rice, Brenda Matthews, Paul Kalas, Bruce Macintosh, Franck Marchis, Stan Metchev, Jenny Patience, Julien Rameau, Kimberly Ward-Duong, Schuyler Wolff, Michael P. Fitzgerald, Vanessa P. Bailey, Travis S. Barman, Joanna Bulger, Christine H. Chen, Jeffrey K. Chilcotte, Tara Cotten, René Doyon, Katherine B. Follette, Benjamin L. Gerard, Stephen Goodsell, James R. Graham, Alexandra Z. Greenbaum, Pascale Hibon, Li-Wei Hung, Patrick Ingraham, Jérôme Maire, Mark S. Marley, Christian Marois, Maxwell A. Millar-Blanchaer, Eric L. Nielsen, Rebecca Oppenheimer, David W. Palmer, Marshall D. Perrin, Lisa A. Poyneer, Laurent Pueyo, Abhijith Rajan, Fredrik T. Rantakyrö, Jean-Baptiste Ruffio, Dmitry Savransky, Adam C. Schneider, Anand Sivaramakrishnan, Inseok Song, Remi Soummer, Sandrine Thomas, Jason J. Wang, Sloane J. Wiktorowicz   +53 more
doaj   +1 more source

HD 117214 debris disk: scattered-light images and constraints on the presence of planets [PDF]

Astronomy & Astrophysics, 2019
Context. Young stars with debris disks are the most promising targets for an exoplanet search because debris indicate a successful formation of planetary bodies. Debris disks can be shaped by planets into ring structures that give valuable indications on
N. Engler, C. Lazzoni, R. Gratton, J. Milli, H. Schmid, G. Chauvin, Q. Kral, N. Pawellek, P. Th'ebault, A. Boccaletti, M. Bonnefoy, S. Brown, T. Buey, F. Cantalloube, M. Carle, A. Cheetham, S. Desidera, M. Feldt, C. Ginski, D. Gisler, T. Henning, S. Hunziker, A. Lagrange, M. Langlois, D. Mesa, M. Meyer, O. Moeller-Nilsson, J. Olofsson, C. Petit, S. Petrus, S. Quanz, E. Rickman, E. Stadler, T. Stolker, A. Vigan, F. Wildi, A. Zurlo   +36 more
semanticscholar   +1 more source

Lipid Nanoparticles for the Delivery of CRISPR/Cas9 Machinery to Enable Site‐Specific Integration of CFTR and Mutation‐Agnostic Disease Rescue

Advanced Functional Materials, EarlyView.
Lipid nanoparticles (LNPs) are optimized to co‐deliver Cas9‐encoding messenger RNA (mRNA), a single guide RNA (sgRNA) targeting the endogenous cystic fibrosis transmembrane conductance regulator (CFTR) gene, and homologous linear double‐stranded donor DNA (ldsDNA) templates encoding CFTR.
Ruth A. Foley, Paul G. Ayoub, Vrishti Sinha, Colin Juett, Alicia Sanoyca, Emily C. Duggan, Lindsay E. Lathrop, Priyanka Bhatt, Kevin Coote, Beate Illek, Brigitte N. Gomperts, Donald B. Kohn, Steven J. Jonas   +12 more
wiley   +1 more source

Gemini Planet Imager Observations of a Resolved Low-inclination Debris Disk around HD 156623

The Astronomical Journal
The 16 Myr old A0V star HD 156623 in the Scorpius–Centaurus association hosts a high-fractional-luminosity debris disk, recently resolved in scattered light for the first time by the Gemini Planet Imager (GPI) in polarized intensity only.
Briley L. Lewis, Michael P. Fitzgerald, Thomas M. Esposito, Pauline Arriaga, Ronald López, Katie A. Crotts, Gaspard Duchêne, Katherine B. Follette, Justin Hom, Paul Kalas, Brenda C. Matthews, Maxwell Millar-Blanchaer, David J. Wilner, Johan Mazoyer, Bruce Macintosh   +14 more
doaj   +1 more source