Results 71 to 80 of about 220,237 (344)

Simulations of stellar convection, pulsation and semiconvection [PDF]

, 2010
We report on modelling in stellar astrophysics with the ANTARES code. First, we describe properties of turbulence in solar granulation as seen in high-resolution calculations.
Bascoul, Buchler, Buchler, Eva Mundprecht, Florian Zaussinger, Friedrich Kupka, Hannes Grimm-Strele, Herbert J. Muthsam, Muthsam, Muthsam, Muthsam, Natalie Happenhofer, Smolec, Spruit   +13 more
core   +1 more source

Properties of stellar clusters around high-mass young stars [PDF]

Astronomy & Astrophysics, 2009
[Abridged] Twenty-six high-luminosity IRAS sources believed to be collection of stars in the early phases of high-mass star formation have been observed in the NIR (J, H, K) to characterize the clustering properties of their young stellar population and gain insight into the initial conditions of star formation in these clusters (Initial Mass Function [
FAUSTINI F, MOLINARI S, TESTI L, BRAND J
openaire   +2 more sources

Cell wall target fragment discovery using a low‐cost, minimal fragment library

FEBS Letters, EarlyView.
LoCoFrag100 is a fragment library made up of 100 different compounds. Similarity between the fragments is minimized and 10 different fragments are mixed into a single cocktail, which is soaked to protein crystals. These crystals are analysed by X‐ray crystallography, revealing the binding modes of the bound fragment ligands.
Kaizhou Yan, Mathew Stanley, Olawale Raimi, Andrew T. Ferenbach, Helge C Dorfmueller, Daan M. F. van Aalten   +5 more
wiley   +1 more source

Structural biology of ferritin nanocages

FEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Stellar Cruise Control: Weakened Magnetic Braking Leads to Sustained Rapid Rotation of Old Stars

The Astrophysical Journal
Despite a growing sample of precisely measured stellar rotation periods and ages, the strength of magnetic braking and the degree of departure from standard (Skumanich-like) spin-down have remained persistent questions, particularly for stars more ...
Nicholas Saunders, Jennifer L. van Saders, Alexander J. Lyttle, Travis S. Metcalfe, Tanda Li, Guy R. Davies, Oliver J. Hall, Warrick H. Ball, Richard Townsend, Orlagh Creevey, Curt Dodds   +10 more
doaj   +1 more source

The nature of z ~ 2.3 Lyman-alpha emitters

, 2011
We study the multi-wavelength properties of a set of 171 Ly-alpha emitting candidates at redshift z = 2.25 found in the COSMOS field, with the aim of understanding the underlying stellar populations in the galaxies.
Baade, Bell, Blain, Bloom, Bongiovanni, Bruzual, C. Tapken, Calzetti, Chapman, Christensen, Colbert, Cowie, Daddi, Elvis, Finkelstein, Finkelstein, Finkelstein, Finkelstein, Finkelstein, Franx, Fynbo, Fynbo, Förster Schreiber, G. Östlin, Gawiser, Gawiser, Gawiser, Giavalisco, Gronwall, Grove, Guaita, Hayes, Hornschemeier, Ilbert, Ivison, Ivison, J. P. U. Fynbo, K. K. Nilsson, Kennicutt, Lai, Lai, Leitherer, Madau, Maraston, Muzzin, Møller, Møller, Nilsson, Nilsson, Nilsson, Nilsson, Nilsson, Nilsson, O. Möller-Nilsson, Ono, Ono, Ouchi, Ouchi, P. Møller, Papovich, Papovich, Pentericci, Pirzkal, Raiter, Ranalli, Reddy, Reddy, Sanders, Schaerer, Schmidt, Shapley, Steidel, Steidel, Tumlinson, Venemans, Verma, W. Freudling, Wang, Yuma, Zackrisson, Östlin   +80 more
core   +1 more source

Fundamental Stellar Properties from Optical Interferometry

, 2010
High-resolution observations by visible and near-infrared interferometers of both single stars and binaries have made significant contributions to the foundations that underpin many aspects of our knowledge of stellar structure and evolution for cool stars.
van Belle, Gerard T., Aufdenberg, Jason, Boyajian, Tabetha, Harper, Graham, Hummel, Christian, Pedretti, Ettore, Baines, Ellyn, White, Russel, Ravi, Vikram, Ridgway, Steve   +9 more
openaire   +3 more sources

Tau acetylation at K331 has limited impact on tau pathology in vivo

FEBS Letters, EarlyView.
We mapped tau post‐translational modifications in humanized MAPT knock‐in mice and in amyloid‐bearing double knock‐in mice. Acetylation within the repeat domain, particularly around K331, showed modest increases under amyloid pathology. To test functional relevance, we generated MAPTK331Q knock‐in mice.
Shoko Hashimoto, Yukio Matsuba, Mika Takahashi, Takaomi C. Saido   +3 more
wiley   +1 more source

The Relationship of Stellar Radius Inflation to Rotation and Magnetic Starspots at 10–670 Myr

The Astrophysical Journal Letters
Active, low-mass stars are widely observed to have radii that are larger than predicted by standard stellar models. Proposed mechanisms for this radius inflation generally involve stellar magnetism, either in the form of added pressure support in the ...
Lyra Cao, Keivan G. Stassun
doaj   +1 more source

Disentangling age and metallicity in distant unresolved stellar systems

, 2008
We present some results of an observational and theoretical study on unresolved stellar systems based on the Surface Brightness Fluctuations (SBF) technique.
Amedeo Tornambe, E. Brocato, Enzo Brocato, G. Raimondo, Gabriella Raimondo, Giuliana Giobbi, L. A. Antonelli, M. Cantiello, Marco Limongi, Nicola Menci   +9 more
core   +1 more source