Results 21 to 30 of about 476 (65)

On the progenitor system of V392 Persei [PDF]

, 2018
A discussion regarding the progenitor system of the nova and dwarf nova system V392 Persei using archival data from 2MASS and WISE. We find that the system is unlikely to contain a luminous red giant donor (i.e.
Buczynski D., Cutri R. M., Cutri R. M., Darnley M. J., Darnley M. J., Downes R. A., Gaia Collaboration, Green G. M., Grezen G. M., Leadbeater R., Li K.-L., Lindegren L., Nakamura Y., Wagner R. M., Zwitter T.   +14 more
core   +2 more sources

First Vasectomy Procedure Successfully Performed on a Southern African Male Giraffe (Giraffa camelopardalis giraffa)

Zoo Biology, EarlyView.
First successful vasectomy in a southern African male giraffe, Giraffa camelopardis giraffa ABSTRACT This study reports the first successful vasectomy on a southern African male giraffe (Giraffa camelopardalis giraffa). The goal of the procedure was to create a teaser male for reproductive studies.
Francois Deacon, Willem Daffue, Edward Collin Albertyn, Susanna Maria Krüger, Ayanda Maqhashu, Jacquiline Goedhals, Andri Grobbelaar, Marike Badenhorst   +7 more
wiley   +1 more source

Multiphase State Transitions and Thermal−Tidal Decoupling in the AM CVn−Type Star V803 Cen

The Astrophysical Journal
AM CVn systems are ultracompact, short-period binaries emitting multimessenger signals and showing both normal outbursts and superoutbursts. They serve as ideal laboratories for studying accretion physics under extreme conditions and for testing the disk
Qi-Bin Sun, Sheng-Bang Qian, Li-Ying Zhu, Qin-Mei Li, Wen-Ping Liao, Fu-Xing Li, Wen-Xu Lin, Min-Yu Li, Ping Li, Zi-Mo Li, Tao Wang, Mao-Han Zhang   +11 more
doaj   +1 more source

Long-term Periodicities of Cataclysmic Variables with Synoptic Surveys [PDF]

, 2017
A systematic study on the long-term periodicities of known Galactic cataclysmic variables (CVs) was conducted. Among 1580 known CVs, 344 sources were matched and extracted from the Palomar Transient Factory (PTF) data repository.
Chou, Yi, Djorgovski, Stanislav G., Donalek, Ciro, Drake, Andrew J., Graham, Matthew J., Hu, Chin-Ping, Kulkarni, Shrinivas R., Laher, Russ, Levitan, David, Mahabal, Ashish A., Ngeow, Chow-Choong, Prince, Thomas A., Su, Yi-Hao, Surace, Jason, Yang, Michael Ting-Chang   +14 more
core   +3 more sources

Monitoring African Megafauna in an Anthropogenic Landscape: A 15‐Year Case Study of the Vulnerable West African Giraffe

Animal Conservation, EarlyView.
We used pattern recognition software to correct misidentifications in a 15‐year photographic database of the last, vulnerable West African giraffe population in Niger. After revealing substantial methodological errors that had inflated population estimates by nearly 19%, we corrected individual encounter histories and applied capture‐mark‐recapture ...
Mara Vukelić, Ella W. White, Julian Fennessy, Abdoul Razack Moussa Zabeirou, Kateřina Gašparová, Simon Valle, Michael B. Brown, Thomas Rabeil, Karolína Brandlová   +8 more
wiley   +1 more source

The sizes of mini-voids in the local universe: an argument in favor of a warm dark matter model?

, 2009
Using high-resolution simulations within the Cold and Warm Dark Matter models we study the evolution of small scale structure in the Local Volume, a sphere of 8 Mpc radius around the Local Group.
A. V. Tikhonov, Abazajian, Abazajian, Avila-Reese, Baugh, Begum, Begum, Bode, Bryan, Colberg, Colín, Crain, El-Ad, G. Yepes, Gottlöber, Hoeft, Hoffman, Hoffman, Karachentsev, Kazantzidis, Kirshner, Klypin, Knebe, Knollmann, Koposov, Macciò, Martinez-Vaquero, Miranda, Moore, Neto, Okamoto, Peebles, Peebles, Peñarrubia, S. Gottlöber, Spergel, Spergel, Springel, Steffen, Stoehr, Tikhonov, Tikhonov, van den Bosch, Viel, Viel, Viel, Wang, Y. Hoffman, Zavala   +48 more
core   +1 more source

Body Mass Records of Zoo‐Managed Rhinoceros (Ceratotherium simum, Diceros bicornis, Rhinoceros unicornis) as Compared to Field Data of Free‐Ranging Specimens

Zoo Biology, Volume 45, Issue 1, Page 74-83, January/February 2026.
Female white rhinos in zoos systematically exceed the body mass range for free‐ranging specimens; this is not the case in black rhinos. ABSTRACT The body mass of zoo animals may differ from those in wild populations due to the different environmental and dietary conditions being offered under human‐managed care.
Elisa Garand, Christiane Krauss, Anna Hauffe, Max Hahn‐Klimroth, Dennis W. H. Müller, Paul W. Dierkes, Marcus Clauss, João Pedro Meireles   +7 more
wiley   +1 more source

Discovery of Faint Nebulosity around a Z Camelopardalis–type Cataclysmic Variable in Antlia: Nova Shell or Ancient Planetary Nebula?

The Astronomical Journal
We report our discovery of a faint nebula surrounding a previously little-studied 15th mag variable star, ASASSN-19ds, in the Southern Hemisphere constellation Antlia. Spectra verify that the star is a cataclysmic variable (CV).
Howard E. Bond, Dana Patchick, Daniel Stern, Jonathan Talbot, John R. Thorstensen   +4 more
doaj   +1 more source

The Star Catalogue of Hevelius

, 2010
The catalogue by Johannes Hevelius with the positions and magnitudes of 1564 entries was published by his wife Elisabeth Koopman in 1690. We provide a machine-readable version of the catalogue, and briefly discuss its accuracy on the basis of comparison ...
van Gent, Robert H., Verbunt, Frank
core   +1 more source

A 50‐year perspective on the use and potential of artiodactyl calcanei in bone adaptation studies

Biological Reviews, Volume 101, Issue 1, Page 437-485, February 2026.
ABSTRACT Sheep and deer calcanei are important models for studying cortical (compact) and trabecular (cancellous) bone adaptation because they are amenable to direct strain measurement (due to lack of surrounding muscles), experience relatively simple/unidirectional bending, exhibit osteon remodelling, and have the most pronounced regional variations ...
John G. Skedros
wiley   +1 more source