Results 111 to 120 of about 1,887,044 (177)

WIYN Open Cluster Study. XCVII. An Extended Radial-velocity Survey and Spectroscopic Binary Orbits in the Open Cluster NGC 188

The Astronomical Journal
We present 35 new spectroscopic-binary orbits from our extended radial-velocity (RV) survey of the old (6.4 ± 0.2 Gyr) open cluster NGC 188. Using data from the WIYN Open Cluster Study (WOCS) and APOGEE-2, this work nearly doubles the temporal baseline ...
Ritvik Sai Narayan, Evan Linck, Robert D. Mathieu, Aaron M. Geller   +3 more
doaj   +1 more source

Cytogenotoxic Effects of Fluopyram in Allium cepa Root Cells Involving Microtubule Disruption

Environmental Toxicology, EarlyView.
ABSTRACT Fluopyram is a next‐generation fungicide widely used in agriculture; however, its persistence in soils and mobility toward aquatic systems have raised concerns regarding potential ecotoxicological risks. This study evaluated the cytogenotoxic effects of a commercial fluopyram‐based pesticide formulation on Allium cepa root meristem cells ...
Carlos Filipe Camilo‐Cotrim, Natanael Alves da Silva, Gabriela Gomes Lima, Igor Rodrigues Vasconcelos, Luciana Souza Ondei, Elisa Flávia Luiz Cardoso Bailão, Antônio Sérgio Nakao de Aguiar, Marcelino Benvindo‐Souza, Leonardo Luiz Borges, Virgínia Damin, Luciane Madureira Almeida   +10 more
wiley   +1 more source

Blue Straggler in the Making: An X-Ray Active Binary in Algol Configuration

The Astrophysical Journal Letters
We report an extremely rare X-ray active blue straggler star (BSS) in Collinder 261, undergoing ongoing Roche-lobe overflow in a semidetached binary in an Algol-type configuration with an orbital period of P _orb  ∼ 2.112 days, providing direct ...
A. H. Sheikh, Biman J. Medhi, Annapurni Subramaniam, Sergio Messina, Susmita Das, Hitendra Sarkar, Anupam Bhardwaj, Atila Poro, Marina Kounkel, Ram Sagar   +9 more
doaj   +1 more source

How to stay wild in a highly domesticated landscape? Spatiotemporal behaviour of wolves in Germany

Wildlife Biology, EarlyView.
Wild animals can adapt to the increasing presence of humans by either becoming accustomed to it or by avoiding humans by spatiotemporal separation. The return of the wolf to the German lowlands raised the opportunity to study wolf behaviour in one of the most densely populated and fragmented countries in Europe, in an area where topography offers no ...
Ilka Reinhardt, Ugo Arbieu, Philipp Mendgen, Barbara Zimmermann, Anne Berger, Gesa Kluth, Thomas Mueller   +6 more
wiley   +1 more source

Stellar Spin-down in Post-mass-transfer Binary Systems

The Astrophysical Journal
Motivated by measurements of the rotation speed of accretor stars in post-mass-transfer (post-MT) systems, we investigate how magnetic braking affects the spin-down of individual stars during binary evolution with the MESAbinary module.
Meng Sun, Seth Gossage, Emily M. Leiner, Aaron M. Geller   +3 more
doaj   +1 more source

Blue straggler stars : Formation channels

, 2016
I review formation channels for blue stragglers. I consider how they may be produced via collisions between two single main-sequence stars, or via collisions during encounters involving binary stars. Further, I discuss how blue stragglers may be produced
Davies, M. B.
core  

Dietary and Ranging Behavior of Semi‐Free Ranging Lemur catta and Varecia rubra at Myakka City Lemur Reserve, Florida, USA

Zoo Biology, EarlyView.
Betsiboka, a female red ruffed lemur (Varecia rubra) eating Carolina redroot in the Tower forest. ABSTRACT Lemurs are severely threatened due to anthropogenic habitat loss and climate change. Therefore, understanding how lemurs adapt their diets to novel habitats is critically important for maintaining healthy wild populations and effectively managing ...
Ethan Gulledge, Hannah L. Lyles, Lydia E. O. Light, Taylor Fisher, Elizabeth Gandy, Bruce Holst, Timothy D. Bransford, Erik R. Patel   +7 more
wiley   +1 more source

The Early Upper Palaeolithic in British caves: problems and potential Le Paléolithique supérieur ancien dans les grottes de Grande‐Bretagne : problèmes et potentiels

Journal of the Royal Anthropological Institute, EarlyView.
Recent years have seen landmark progress in our understanding of early Homo sapiens occupation of Europe, owing to new excavations and the application of new analytical methods. Research on British sites, however, continues to lag. This is because of limitations inherent in existing cave collections, and limited options for new fieldwork at known sites.
Robert Dinnis
wiley   +1 more source

The Impact of Stellar Rotations and Binaries on the Shape of Upper Main Sequence near Turnoff in Open Cluster NGC 6067

The Astrophysical Journal
We present the analysis of the extended main-sequence turnoff (eMSTO) in the open cluster NGC 6067. We derive the projected rotational velocity, v sin i , of the stars belonging to the eMSTO region of the main sequence (MS) utilizing Gaia-ESO spectra ...
Jayanand Maurya, Yu Zhang, Sebastian Kamann, Hubiao Niu, Yves Frémat, Kaixiang Lang, Y. C. Joshi, M. R. Samal, Peter De Cat, Ali Esamdin   +9 more
doaj   +1 more source

Comparative Efficiency of eDNA, Camera Traps and Scat Surveys to Detect a Semi‐Aquatic Mammal Across Multiple Catchments

Animal Conservation, EarlyView.
Monitoring semi‐aquatic mammals is essential for their conservation, but it is made difficult by their elusive lifestyle and generally low abundance. Eurasian otter (Lutra lutra) monitoring has traditionally relied on scat surveys, but eDNA and camera‐trapping are emerging as promising alternatives.
Simon Lacombe, Sébastien Devillard, Louise D'Hollande, Yann Raulet, Vincent Sablain, Louis Barbu, Geoffrey Didier, Raphaël Mathevet, Claude Miaud, Clément Oyon, Eve le Pommelet, Sébastien Richarte, Serge Rouvière, Alice Valentini, Nathalie Vazzoler‐Antoine, Olivier Gimenez   +15 more
wiley   +1 more source