Results 41 to 50 of about 242,475 (295)

A Model for Eruptive Mass Loss in Massive Stars

The Astrophysical Journal
Eruptive mass loss in massive stars is known to occur, but the mechanism(s) are not yet well understood. One proposed physical explanation appeals to opacity-driven super-Eddington luminosities in stellar envelopes.
Shelley J. Cheng, Jared A. Goldberg, Matteo Cantiello, Evan B. Bauer, Mathieu Renzo, Charlie Conroy   +5 more
doaj   +1 more source

Septin 9 PB domains coordinate centrosome positioning and microtubule acetylation to control epithelial polarity

FEBS Letters, EarlyView.
Septin 9 polybasic domains couple phosphoinositide‐rich membrane binding to centrosome positioning, Golgi organization, and microtubule acetylation to control epithelial polarity. Their loss disrupts this axis, causing centrosome mispositioning, Golgi fragmentation, reduced microtubule acetylation, and polarity inversion via upregulation of the ...
Ting ting Cai, Mohyeddine Omrane, Nassima Benzoubir, Didier Samuel, Ama Gassama‐Diagne   +4 more
wiley   +1 more source

Calibrating Eruptive Mass Loss in Red Supergiants with Local Group Data

The Astrophysical Journal
We calibrate a physically motivated, super-Eddington eruptive mass-loss prescription for red supergiants (RSGs) using Local Group stellar populations.
Shelley J. Cheng, Charlie Conroy, Jared A. Goldberg   +2 more
doaj   +1 more source

Multicomponent radiatively driven stellar winds

, 2001
We study the stability of isothermal two-component radiatively driven stellar winds to one-dimensional perturbations larger than the Sobolev length, and radiative-acoustic waves in such stellar winds.
J. Krtička, J. Kubát
core   +1 more source

Degradation mechanism of the von Willebrand factor A2 domain by nattokinase

FEBS Letters, EarlyView.
Nattokinase, a natto‐derived protease, exhibits potent antithrombotic effects. This study demonstrates that nattokinase directly cleaves the von Willebrand factor (vWF) A2 domain in vitro. Unlike the native regulator ADAMTS13, nattokinase degrades folded vWF independently of shear stress.
Ryuichi Hyakumoto, Masatomo So, Ayako Furukawa, Kenji Sugase   +3 more
wiley   +1 more source

Quasi-Keplerian Be-star Disks with Mimicking Viscosity

The Astrophysical Journal
Classical Be stars are fast-rotating B-type stars with gaseous quasi-Keplerian disks formed by equatorial ejection of material. While the viscous decretion disk (VDD) model reproduces many observed properties, the role of radiative line driving in ...
Michel Curé, Ignacio Araya, Rodrigo Meneses, Matías Montesinos, Roberto O. J. Venero, Catalina Arcos, Abigali Rodriguez, Lydia S. Cidale   +7 more
doaj   +1 more source

Star/disk interaction and angular momentum evolution model for solar-like stars

EPJ Web of Conferences, 2014
The magnetic field in young stellar object is undoubtedly the most important component when one dealing with the angular momentum evolution. It controls this latter one from the pre-main sequence, during the so-called disk locking phase where the stars ...
Gallet Florian
doaj   +1 more source

A near-infrared interferometric survey of debris disc stars. III. First statistics based on 42 stars observed with CHARA/FLUOR [PDF]

, 2013
peer reviewedContext. Dust is expected to be ubiquitous in extrasolar planetary systems due to the dynamical activity of minor bodies. Inner dust populations are, however, still poorly known due to the high contrast and small angular separation with ...
Mérand, Antoine, Augereau, J. -C., Sturmann, Laszlo, Hanot, C., Monnier, J. D., E. Di Folco, Augereau, Jean-Charles, C. Hanot, J.-C. Augereau, McAlister, Harold, Mollier, Benjamin, Tuthill, Peter, Che, X., Tuthill, P. G., J. D. Monnier, Absil, O., Monnier, John, N. Turner, Kervella, Pierre, P. Kervella, Ertel, Steve, Sturmann, Judit, L. Sturmann, Absil, Olivier, Scott, Nicholas, Ertel, S., Defrère, D., Foresto, V. Coudé Du, V. Coudé du Foresto, Sturmann, L., ten Brummelaar, T. A., H. A. McAlister, Che, Xiao, ten Brummelaar, Theo, McAlister, H. A., Mérand, A., B. Mollier, D. Defrère, Scott, N., Thureau, N., Di Folco, E., P. G. Tuthill, Mollier, B., Coudé du Foresto, Vincent, Kervella, P., Turner, N., Brummelaar, T. A. Ten, A. Mérand, Turner, Nils, T. A. ten Brummelaar, Defrere, Denis, Scott, Nicholas William, N. Scott, Hanot, Charles, O. Absil, Coudé du Foresto, V., Thureau, Nathalie Danielle, N. Thureau, S. Ertel, X. Che, Di Folco, Emmanuel, Thureau, Nathalie, Sturmann, J., J. Sturmann   +63 more
core   +1 more source

Salmonella lipopolysaccharide‐containing supported lipid bilayers as platforms to study bacteriophage interactions

FEBS Letters, EarlyView.
We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace, Alyssa Borges, Charles Arnaud, Tove Karlsson, Nina K. Bröker, Stefanie Barbirz, Marta Bally   +6 more
wiley   +1 more source

Fictions, Conditionals, and Stellar Astrophysics [PDF]

, 2013
This article argues in favour of an inferential role for fictions in scientific modelling. The argument proceeds by means of a detailed case study, namely models of the internal structure of stars in stellar astrophysics.
Suárez, Mauricio, Mauricio Suárez
core   +1 more source