Results 51 to 60 of about 476 (65)

Stable social structure of spotted hyenas Crocuta crocuta during the dry and wet season in Central Tuli, Botswana

Wildlife Biology, Volume 2025, Issue 6, November 2025.
Group‐living animals often exhibit dynamic social structures, with fission–fusion behavior enabling adaptive responses to environmental changes. Spotted hyenas Crocuta crocuta are large carnivores with complex social dynamics influenced by intrinsic factors, such as rank and kinship, and extrinsic factors, such as prey availability.
Atze van der Goot, Richard Mazebedi, Frank van Langevelde, Sander Vissia   +3 more
wiley   +1 more source

Predators and management influence adult sex ratio of ungulate communities: Synergies and challenges for contemporary conservation

Journal of Applied Ecology, Volume 62, Issue 11, Page 3026-3039, November 2025.
Predators and management can influence ungulate adult sex ratio (ASR) through multiple pathways, with important implications for breeding system evolution and population dynamics. Given many landscapes are defaunated of natural predators, we demonstrate the importance of incorporating sex‐biased wildlife management into contemporary conservation plans.
Andrew J. Abraham, Wendy Panaino, Olivia Jones, Dylan Smith, Celesté Maré, Marcus Clauss, Elizabeth le Roux, Andrea B. Webster   +7 more
wiley   +1 more source

The star-forming environment of a ULX in NGC 4559: an optical study

, 2004
We have studied the candidate optical counterparts and the stellar population in the star-forming complex around a bright ULX in NGC4559, using HST/WFPC2, XMM-Newton/OM, and ground-based data.
Griffiths, K. Wu, Kroupa, M. Cropper, M. Pakull, R. Mushotzky, R. Soria   +6 more
core   +1 more source

3D Simulations of Betelgeuse's Bow Shock

, 2012
Betelgeuse, the bright, cool red supergiant in Orion, is moving supersonically relative to the local interstellar medium. The star emits a powerful stellar wind which collides with this medium, forming a cometary structure, a bow shock, pointing in the ...
Agertz, Barnes, Bernat, Brighenti, Cao, Eldridge, Esquivel, Frisch, Garcia-Segura, Glassgold, Gvaramadze, Harper, Hartmann, Heger, Huggins, J. Mackey, Ladjal, Lambert, Martin, Mayer, Meynet, Monaghan, N. Langer, Noriega-Crespo, Ohnaka, Price, Price, Raga, Rodgers, Rosswog, S. Mohamed, Sahai, Smith, Smith, Springel, Springel, Springel, Springel, Stencel, Sutherland, Suttner, Townes, Ueta, Valcke, van Marle, van Marle, Villaver, Wadsley, Wareing, Wareing, Weaver, Wilkin, Wolfire, Young, Young   +54 more
core   +1 more source

Post-mortem enamel surface texture alteration during taphonomic processes-do experimental approaches reflect natural phenomena? [PDF]

PeerJ, 2022
Weber K, Winkler DE, Schulz-Kornas E, Kaiser TM, Tütken T.   +4 more
europepmc   +1 more source

Binary Stars among Cataclysmic Variables. XI. Photoelectric and Spectroscopic Observations of the Dwarf Nova Z Camelopardalis

The Astrophysical Journal, 1969
Robert P. Kraft, W. Krzeminski, George S. Mumford   +2 more
openaire   +1 more source

Modifying the Standard Disk Model for the Ultraviolet Spectral Analysis of Disk-dominated Cataclysmic Variables. I. The Novalikes MV Lyrae, BZ Camelopardalis, and V592 Cassiopeiae. [PDF]

Astrophys J, 2017
Godon P, Sion EM, Balman Ş, Balman Ş, Blair WP.   +4 more
europepmc   +1 more source

OSO-8 X-ray observations of AM Herculis [PDF]

Hard X-ray observations of the binary system AM Her were coincident with soft X-ray and ground-based optical measurements. In the 2-60 KeV band, variability was detected with an eclipse during phases 0.5 to 0.7 with respect to the 0.
Boldt, E., Holt, S. S., Lampton, M., Serlemitsos, P. J., Swank, J. H.   +4 more
core   +1 more source

Changes of Period in Variable Stars of Long Period. [PDF]

Proc Natl Acad Sci U S A, 1937
Sterne TE, Campbell L.
europepmc   +1 more source

Galactic and Extragalactic Studies: XX. On the Distribution of 78,000 of the Brighter Northern Galaxies. [PDF]

Proc Natl Acad Sci U S A, 1950
Shapley H.
europepmc   +1 more source