Results 121 to 130 of about 3,131 (230)

The Multiple Origin of Blue Straggler Stars: Theory vs. Observations

, 2014
In this chapter we review the various suggested channels for the formation and evolution of blue straggler stars (BSSs) in different environments and their observational predictions.
A. Hypki, A. Jorissen, A. M. Geller, A. M. Geller, A. M. Geller, A. S. Hamers, A. Tokovinin, B. W. Carney, B. W. Carney, C. Abate, D. Fabrycky, D. Raghavan, D. T. F. Weldrake, D. T. F. Weldrake, D. W. Latham, F. Antonini, F. R. Ferraro, F. R. Ferraro, H. B. Perets, H. B. Perets, H. B. Perets, H. B. Perets, J. G. Hills, J. M. Fregeau, J. M. Nemec, J. R. Hurley, L. G. Kiseleva, L. Lovisi, L. Lovisi, M. Auriere, M. B. Davies, M. L. Lidov, M. M. Shara, M. Mapelli, M. Mateo, N. Leigh, N. Leigh, P. Eggleton, P. J. T. Leonard, P. J. T. Leonard, P. J. T. Leonard, P. J. T. Leonard, P. J. T. Leonard, P. P. Eggleton, P. P. Eggleton, R. D. Mathieu, R. D. McClure, R. Kippenhahn, R. S. Harrington, S. Chatterjee, S. M. Rucinski, T. Dermine, T. Mazeh, W. Benz, W. H. McCrea, W. H. McCrea, W. I. Clarkson, W. Landsman, X. Chen, Y. Kozai   +59 more
core   +1 more source

Binary origin of blue straggler stars in Galactic star clusters

Astronomy & Astrophysics
Building on the recent release of a new Gaia-based blue straggler star catalog in Galactic open star clusters (OCs), we explored the properties of these stars in a cluster sample spanning a wide range in fundamental parameters. We employed Gaia EDR3 to assess the membership of any individual blue or yellow straggler to their parent cluster.
M. J. Rain, M. S. Pera, G. I. Perren, O. G. Benvenuto, J. A. Panei, M. A. De Vito, G. Carraro, S. Villanova   +7 more
openaire   +4 more sources

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

Blue Straggler Formation in Clusters

, 2010
Blue stragglers are thought to be formed from the merger or coalescence of two stars, but the details of their formation in clusters has been difficult to disentangle.
Sills, Alison
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

Binary Fraction in Galactic Star Clusters: FSR 866, NGC 1960, and STOCK 2

The Astronomical Journal
The study of binary stars in different astronomical environments offers insights into the dynamical state of the hosting stellar systems. The binary fraction in fact plays a crucial role in the dynamical evolution of stellar systems, regulating processes
L. Yalyalieva, A. Chemel, G. Carraro, E. Glushkova   +3 more
doaj   +1 more source

When invasions go unnoticed: Public perception of the freshwater jellyfish Craspedacusta sowerbii in Europe

People and Nature, EarlyView.
Abstract Biological invasions are a major driver of biodiversity loss, yet inconspicuous or “cryptic” species often escape detection and public awareness, limiting management responses. We investigated the freshwater jellyfish Craspedacusta sowerbii, likely native to China and now present on six continents, through a 22‐month multilingual online survey
Guillaume Marchessaux, Kristína Slovák Švolíková, Barbora Števove, Ali Serhan Tarkan, Daniela Giannetto, Cristina Preda, Belma Kalamujić Stroil, Maciej K. Mańko, András Abonyi, Álmos Becz, Massimo Morpurgo, Evgeny A. Pakhomov, Levan Mumladze, Mar Bosch‐Belmar, Aino Hosia, Patricia Ventura, Jamileh Javidpour, Florian Lüskow   +17 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

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

Enhancing Charge Transport and Extraction in Ta3N5 Photoanodes Via Ti Doping and TiN Contact Layers

Small, EarlyView.
Ta3N5${\rm Ta}_3{\rm N}_{5}$ is a promising photoanode for solar water splitting but suffers from poor charge transport and interfacial losses. We combine Ti compensation doping with ultrathin TiN back‐contact interlayers to suppress bulk recombination, enhance carrier mobility and lifetime, and enable efficient carrier extraction, yielding ...
Laura I. Wagner, Dominik Moser, Dennis Friedrich, Frans Munnik, Olivier Henrotte, Emiliano Cortés, Roel van de Krol, Verena Streibel, Ian D. Sharp   +8 more
wiley   +1 more source