Results 71 to 80 of about 14,680 (203)

Patterns of wild meat and other protein consumption in the periphery of Salonga National Park, Democratic Republic of the Congo

People and Nature, EarlyView.
Abstract In Central Africa, human activities are severely impacting terrestrial and aquatic wildlife, threatening the food security of millions of people. Accordingly, sustainable use of wildlife is crucial for the nutrition and livelihoods of many rural communities in the region.
Zolo Admettons, Mattia Bessone, Josué Ausse Baraka, Josué Engombe Botomia, Espérance Miezi, Bénédicte Nsilu, Jonathan Nkamisha Mukole, Michel Opelele Omeno, Jean Semeki Ngabinzeke, Barbara Fruth   +9 more
wiley   +1 more source

The SAGA Survey. IV. The Star Formation Properties of 101 Satellite Systems around Milky Way–mass Galaxies

The Astrophysical Journal
We present the star-forming properties of 378 satellite galaxies around 101 Milky Way analogs in the Satellites Around Galactic Analogs (SAGA) Survey, focusing on the environmental processes that suppress or quench star formation.
Marla Geha, Yao-Yuan Mao, Risa H. Wechsler, Yasmeen Asali, Erin Kado-Fong, Nitya Kallivayalil, Ethan O. Nadler, Erik J. Tollerud, Benjamin Weiner, Mithi A. C. de los Reyes, Yunchong Wang, John F. Wu   +11 more
doaj   +1 more source

A Cosmological Framework for the Co-Evolution of Quasars, Supermassive Black Holes, and Elliptical Galaxies: II. Formation of Red Ellipticals

, 2007
(Abridged) We develop and test a model for the cosmological role of mergers in the formation and quenching of red, early-type galaxies. Making the ansatz that star formation is quenched after a gas-rich, spheroid-forming major merger, we demonstrate that
Athanassoula E., Bower R. G., Cattaneo A., Combes F., Cooper M. C., Dekel A., Dušan Kereš, Hopkins P. F., Krivitsky D. S., Lars Hernquist, Pfenniger D., Philip F. Hopkins, Pipino A., Rees M. J., Soltan A., Thomas J. Cox, Weinmann S. M., White S. D. M.   +17 more
core   +1 more source

Genotyping Contemporary Captive and Historical Wild Western Lowland Gorillas Indicates Captive Breeding Is Maintaining Genetic Diversity in a Critically Endangered Primate

Animal Conservation, EarlyView.
Captive populations of threatened species risk losing genetic diversity over time. We evaluated the genetic status of contemporary captive western lowland gorillas (Gorilla gorilla gorilla) at Howletts and Port Lympne and compared this with specimens from a historical wild population.
Jaimie Morris, Tony King, John Hills, Simon C. Harvey, Jane Hopper, Rodrigo Vega   +5 more
wiley   +1 more source

Star formation quenching in galaxies [PDF]

SCIENTIA SINICA Physica, Mechanica & Astronomica, 2017
The cosmic star formation rate density is peaked at $z\sim2$ and declines continuously since then, implying that the quenching of star formation has been the dominating process in galaxy evolution in the past $\sim10$ Gyr. As a result, the present day universe does not contain many star-bursting galaxies, which were the dominating population at $z\sim2$
openaire   +1 more source

A dichotomy in satellite quenching around L* galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2013
14 pages, 9 ...
Phillips, John I, Wheeler, Coral, Boylan-Kolchin, Michael, Bullock, James S, Cooper, Michael C, Tollerud, Erik J   +5 more
openaire   +4 more sources

Revealing the Impact of Critical Stellar Central Density on Galaxy Quenching through Cosmic Time

The Astrophysical Journal
In a previous work, we investigated the structural and environmental dependence on quenching in the nearby universe. In this work, we extend our investigations to higher redshifts by combining galaxies from the Sloan Digital Sky Survey and The FourStar ...
Bingxiao Xu, Yingjie Peng
doaj   +1 more source

Out There No One Has a Right to Die

Bioethics, EarlyView.
ABSTRACT The eventual goal of space exploration is to colonize exoplanets and their moons outside our solar system. This is a dangerous and immoral endeavour. The extraterrestrial life forms encountered would be hostile, vulnerable or both, and the descendants of the original pioneers would be involuntarily exposed to hazardous conditions and ...
Matti Häyry
wiley   +1 more source

THE MASS DEPENDENCE OF DWARF SATELLITE GALAXY QUENCHING [PDF]

The Astrophysical Journal, 2014
We combine observations of the Local Group with data from the NASA-Sloan Atlas to show the variation in the quenched fraction of satellite galaxies from low mass dwarf spheroidals and dwarf irregulars to more massive dwarfs similar to the Magellanic clouds.
Slater, Colin T., Bell, Eric F.
openaire   +2 more sources

Active Galactic Nucleus Feedback in an Elliptical Galaxy. IV. The Importance of the Jet–Wind Coupling

The Astrophysical Journal
This is the fourth paper of our series investigating the effects of active galactic nucleus (AGN) feedback in the evolution of an elliptical galaxy using the MACER framework.
Minhang Guo, Feng Yuan, Suoqing Ji, Bocheng Zhu   +3 more
doaj   +1 more source