Results 81 to 90 of about 83,866 (252)

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 evolution of galaxy sizes

, 2012
We present a study of galaxy sizes in the local Universe as a function of galaxy environment, comparing clusters and the general field. Galaxies with radii and masses comparable to high-z massive and compact galaxies represent 4.4% of all galaxies more ...
Bettoni, Daniela, Bindoni, Daniele, Calvi, Rosa, D'Onofrio, Mauro, De Lucia, Gabriella, Fasano, Giovanni, Fritz, Jacopo, Gullieuszik, Marco, Moretti, Alessia, Omizzolo, Alessandro, Poggianti, Bianca M., Valentinuzzi, Tiziano, Vulcani, Benedetta   +12 more
core   +1 more source

On the Age Distribution of Classical Cepheids in the Galaxy

Astronomische Nachrichten
ABSTRACTWe revisit the problem of the positive correlation between age and Galactocentric distance seen in Galactic Classical Cepheids, which at first sight may seem counter‐intuitive in the context of inside‐out galaxy formation. To explain it, we use the Besançon Galaxy Model and a simulation of star particles in the Galactic disc coupled with ...
Friedrich Anders, Chloé Padois, Marc Vilanova Sar, Marcin Semczuk, Marc del Alcázar‐Julià, Francesca Figueras   +5 more
openaire   +2 more sources

COLORS, AGES, AND METALLICITIES OF GALAXIES IN SIX NEARBY GALAXY CLUSTERS [PDF]

Journal of The Korean Astronomical Society, 2008
We present an optical-infrared photometric study of galaxies in six nearby clusters of galaxies at z=0.041∼0.098 (A1436, A1773, A1809, A2048, A2142, and A2152). Using BV I photometry obtained at the Bohyunsan Optical Astronomical Observatory and JHKS photometry extracted from the 2-Micron All-Sky Survey catalog, we investigate the colors of galaxies in
Jong-Chul Lee, Myung-Gyoon Lee, Tae-Hyun Kim   +2 more
openaire   +1 more source

Impact of the low solar abundance on the ages of globular clusters

, 2010
We present the result of our investigation on the impact of the low Solar abundance of Asplund and collaborators (2004) on the derived ages for the oldest star clusters based on isochrone fittings. We have constructed new stellar models and corresponding
Kim, Yong -Cheol, Yi, Sukyoung K.
core   +1 more source

Ages and metallicities of Hickson compact group galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2004
Hickson compact groups (HCGs) constitute an interesting extreme in the range of environments in which galaxies are located, as the space density of galaxies in these small groups are otherwise only found in the centres of much larger clusters. The work presented here uses Lick indices to make a comparison of ages and chemical compositions of galaxies ...
Proctor, Robert N., Forbes, Duncan, Hau, George K.T., Beasley, Michael A., De Silva, G. M., Contreras, R., Terlevich, A. I.   +6 more
openaire   +3 more sources

Diving Deeper Into Mechanisms of Acrylamide‐Induced Toxicity: RNA Sequencing Reveals Transcriptomic Alteration and Retrotransposon Expression in Drosophila melanogaster

Environmental Toxicology, EarlyView.
ABSTRACT Given the inevitability of human and animal exposure to acrylamide, there is increasing concern regarding its potential health risks. While a number of molecular mechanisms have been proposed, the complexity of acrylamide toxicological pathways and interactions remains incompletely characterized.
Oluwabukola Mary Farodoye, Titilayomi Ayomide Otenaike, Daniela Moreira Mombach, Monica Medeiros Silva, Amos Olalekan Abolaji, Elgion Lucio Da Silva Loreto   +5 more
wiley   +1 more source

Theoretical Re-evaluations of Scaling Relations between SMBHs and Their Host Galaxies–2. Importance of AGN Feedback Suggested by Stellar Age–Velocity Dispersion Relation

Frontiers in Astronomy and Space Sciences, 2017
We present the galactic stellar age—velocity dispersion relation obtained from a semi-analytic model of galaxy formation. We divide galaxies into two populations: galaxies which have over-massive/under-massive black holes (BHs) against the best-fitting ...
Hikari Shirakata, Toshihiro Kawaguchi, Takashi Okamoto, Tomoaki Ishiyama   +3 more
doaj   +1 more source

Formation of a Malin 1 analogue in IllustrisTNG by stimulated accretion [PDF]

, 2018
The galaxy Malin 1 contains the largest stellar disk known but the formation mechanism of this structure has been elusive. In this paper, we report a Malin 1 analogue in the 100 Mpc IllustrisTNG simulation and describe its formation history.
Gaspari, Massimo, Genel, Shy, Hernquist, Lars, Li, Yuexing, Marinacci, Federico, Nelson, Dylan, Pakmor, Rüdiger, Pillepich, Annalisa, Rodriguez-Gomez, Vicente, Springel, Volker, Torrey, Paul, Vogelsberger, Mark, Weinberger, Rainer, Xu, Dandan, Zhu, Qirong, Zjupa, Jolanta   +15 more
core   +2 more sources

Age of Massive Galaxies at Redshift 8

The Astrophysical Journal
Abstract Recent James Webb Space Telescope data analyses have shown that massive red galaxies existed at redshifts z ≳ 6, a discovery that is difficult to understand in the context of standard cosmology (ΛCDM). Here, we analyze these observations more deeply, by fitting a stellar population model to the optical and near-infrared ...
M. López-Corredoira, F. Melia, J.-J. Wei, C.-Y. Gao   +3 more
openaire   +3 more sources