Results 141 to 150 of about 5,356 (321)

Dynamical age differences among coeval star clusters as revealed by blue stragglers

, 2012
Globular star clusters that formed at the same cosmic time may have evolved rather differently from a dynamical point of view (because that evolution depends on the internal environment) through a variety of processes that tend progressively to segregate
A Dotter, A Marín-Franch, A Renzini, A Sills, A Sollima, A. Mucciarelli, A. Sills, AM Geller, B Lanzoni, B Lanzoni, B. Lanzoni, C Knigge, DC Heggie, E. Dalessandro, E. Vesperini, F. R. Ferraro, FR Ferraro, FR Ferraro, FR Ferraro, FR Ferraro, FR Ferraro, G Meylan, G. Beccari, IR King, J Binney, JG Hills, K Bekki, M Mapelli, M Mapelli, M Mapelli, M Monelli, M. Mapelli, M. Pasquato, MB Davies, MM Shara, N. Sanna, P. Miocchi, R. Contreras, R. T. Rood, S Djorgovski, S. Sigurdsson, SC Trager, WH McCrea   +42 more
core   +1 more source

mocca code for star cluster simulations – V. Initial globular cluster conditions influence on blue stragglers [PDF]

, 2016
Arkadiusz Hypki, Mirek Giersz
openalex   +1 more source

A Stopped‐Flow Instrument for Millisecond Timescale Reaction Monitoring on a Standard NMR Spectrometer

Magnetic Resonance in Chemistry, EarlyView.
A new stopped‐flow instrument allows kinetic measurements of reactions 10 milliseconds after initiating them by mixing in a flow cell inserted into a standard NMR probe and spectrometer. High‐speed video, pressure and NMR line‐shape data are used to characterise mixing and stopping, and a protodeboronation reaction with a 5‐millisecond half‐life used ...
Andrew M. R. Hall, Edward J. King, Lloyd A. L. Mitchell, George A. Steedman, Stuart Johnstone, Clark Landis, Guy C. Lloyd‐Jones   +6 more
wiley   +1 more source

Sexual dimorphic regulation of recombination by the synaptonemal complex in C. elegans. [PDF]

Elife, 2023
Cahoon CK, Richter CM, Dayton AE, Libuda DE.   +3 more
europepmc   +1 more source

First Evidence of Circumstellar Disks around Blue Straggler Stars

, 2004
We present an analysis of optical HST/STIS and HST/FOS spectroscopy of 6 blue stragglers found in the globular clusters M3, NGC6752 and NGC6397. These stars are a subsample of a set of ~50 blue stragglers and stars above the main sequence turn-off in ...
Bessell M. S., David Zurek, Hills J. G., John A. Ouellette, Michael M. Shara, Orsola De Marco, Thierry Lanz, Thorval S.   +7 more
core   +2 more sources

Environmental effects on the globular cluster blue straggler population: a statistical approach [PDF]

, 2008
A. Moretti, F. De Angeli, G. Piotto
openalex   +1 more source

From the brink of extinction to regulation: northern Europe's white‐tailed eagles now face density dependence and climate constraints after rapid population growth

Oikos, EarlyView.
Population growth reflects the combined influence of regulation and density‐independent factors operating through demographic processes. Under exceptional circumstances (e.g. populations recovering from near‐extinction), growth may initially be weakly regulated but typically slows as negative density dependence (NDD) sets in.
Bård‐Jørgen Bårdsen, Elisabeth Hansen, Jan Ove Bustnes   +2 more
wiley   +1 more source

What does coexistence mean? Insight from place‐based trajectories of pastoralists and bears encounters in the Pyrenees

People and Nature, EarlyView.
Abstract The recovery of large carnivores in Europe raises issues related to sharing landscape with humans. Beyond technical solutions, it is widely recognized that social factors also contribute to shaping coexistence. In this context, scholars increasingly stress the need to adopt place‐based approaches by analysing how humans and wildlife interact ...
Alice Ouvrier, Manon Culos, Sylvie Guillerme, Antoine Doré, Helene Figari, John D. C. Linnell, Pierre‐Yves Quenette, Ruppert Vimal   +7 more
wiley   +1 more source

Once a Triple, Not Always a Triple: The Evolution of Hierarchical Triples That Yield Merged Inner Binaries

The Astrophysical Journal
More than half of all main-sequence (MS) stars have one or more companions, and many of those with initial masses 10 yr) companions. Furthermore, both BSS binaries and DWDs exhibit signatures of WD birth kicks.
Cheyanne Shariat, Smadar Naoz, Kareem El-Badry, Antonio C. Rodriguez, Bradley M. S. Hansen, Isabel Angelo, Alexander P. Stephan   +6 more
doaj   +1 more source

Bright Variable Stars in NGC 6819 - An Open Cluster in the Kepler Field

, 2010
We describe a variability study of the moderately old open cluster NGC 6819. We have detected 4 new detached eclipsing binaries near the cluster turnoff (one of which may be in a triple system). Several of these systems should be able to provide mass and
Antonio Talamantes, Auner, Bragaglia, David D. Balam, Eric L. Sandquist, Ferraro, Geller, Hartman, Hole, James L. Clem, Kalirai, Matthew Shetrone, Milone, Pamyatnykh, Pigulski, Rosvick, Rucinski, Russell M. Robb, Samus, Sanders, Sandquist, Shetrone, Stello, VandenBerg, Williams   +24 more
core   +1 more source