Results 91 to 100 of about 4,313 (174)

Deep multi-telescope photometry of NGC 5466. I. Blue Stragglers and binary systems

, 2013
We present a detailed investigation of the radial distribution of blue straggler star and binary populations in the Galactic globular cluster NGC 5466, over the entire extension of the system.
Beccari, G., Bellazzini, M., Dalessandro, E., Ferraro, F. R., Lanzoni, B., Miocchi, P., Sollima, A.   +6 more
core   +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

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

Leverage points for transformative change towards nature inclusivity on Bonaire and Aruba

People and Nature, EarlyView.
Abstract Transformative change for a just and sustainable world is urgent to halt and reverse biodiversity loss and climate change. Identifying leverage points for transformative change is crucial but difficult due to the complexity and interconnectedness of systems, compounded by uncertainty and diverse stakeholder views.
Thirze D. G. Hermans, H. Julia S. Hartman, Sander W. K. van den Burg, Bertram de Rooij, Peter J. F. M. Verweij   +4 more
wiley   +1 more source

UBVI CCD Photometry of the Old Open Cluster NGC 1193

, 2008
We present UBVI photometry of the old open cluster NGC 1193. Color-magnitude diagrams (CMDs) of this cluster show a well defined main sequence and a sparse red giant branch.
Hiriart, David, Kim, Sang Chul, Kyeong, Jaemann, Sung, Eon-Chang   +3 more
core   +1 more source

Detecting and attributing climate change effects on vegetation: Australia as a test case

PLANTS, PEOPLE, PLANET, EarlyView.
Climate change is contributing to vegetation changes that threaten life support systems. Yet, inherent climatic variability and past and present human actions—such as clearing, burning and grazing regimes—also alter vegetation and complicate understanding of vegetation change. Australian ecosystems exemplify such complexity.
Laura J. Williams, Rachael V. Gallagher, Sami W. Rifai, Matthew A. Adeleye, Patrick J. Baker, David M. J. S. Bowman, Jake Eckersley, Jacqueline R. England, Michael‐Shawn Fletcher, Pauline F. Grierson, Assaf Inbar, Jürgen Knauer, Clare M. Stephens, Raphaël Trouvé, Belinda E. Medlyn   +14 more
wiley   +1 more source

Stellar Encounters with Multiple Star Systems and the Blue Straggler Problem

, 2010
We present a technique to identify the most probable dynamical formation scenario for an observed binary or triple system containing one or more merger products or, alternatively, to rule out the possibility of a dynamical origin. Our method relies on an
Leigh, Nathan, Sills, Alison
core   +1 more source

The Blue Straggler Star population in NGC6229

The Monthly Notices of the Royal Astronomical Society , 2012
We have used a combination of high-resolution Hubble Space Telescope Wide Field Planetary Camera 2 and wide-field ground-based observations in ultraviolet and optical bands to study the blue straggler star (BSS) population of the outer halo globular cluster NGC 6229 over its entire radial extent.
SANNA, NICOLETTA, DALESSANDRO, EMANUELE, LANZONI, BARBARA, FERRARO, FRANCESCO ROSARIO, G. Beccari, R. T. Rood   +5 more
openaire   +1 more source

Analysis of Vibration‐enabled Dynamic Dispensing of Surrogate Energetic Powders

Propellants, Explosives, Pyrotechnics, EarlyView.
ABSTRACT Energetic materials have uniquely high energy densities and rapid release rates that provide solutions to a wide range of engineering problems, such as propulsion and demolition. The sensitivity of energetics is dependent on many factors, including microstructure and sources of initiation (i.e., mechanical insult, thermal, and electrostatic ...
Andrew Bok, Bryan Gong, Katie Hart, Monique McClain   +3 more
wiley   +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