Results 91 to 100 of about 114,760 (309)

The nature of obscuration in AGN: II. insights from clustering properties

, 2014
Based on large optical and mid-infrared (IR) surveys, we investigate the relation between nuclear activity in local Seyfert 2 galaxies and galaxy interactions using a statistical neighbour counting technique.
Kauffmann, Guinevere, Li, Cheng, Shao, Li, Wang, Jing   +3 more
core   +1 more source

SDSS-IV MaNGA: Spatial Evolution of Gas-phase Metallicity Changes Induced by Galaxy Interactions

The Astrophysical Journal
Gas-phase metallicity in interacting and merging galaxies offers key insights into their star formation processes and evolutionary histories. This study investigates the spatial evolution of gas-phase metallicity (i.e., oxygen abundance, 12 + log(O/H ...
Hsi-An Pan, Lihwai Lin, Sebastián F. Sánchez, Jorge K. Barrera-Ballesteros, Bau-Ching Hsieh   +4 more
doaj   +1 more source

Isolated Galaxies versus Interacting Pairs with MaNGA

Galaxies, 2015
We present preliminary results of the spectral analysis on the radial distributions of the star formation history in both a galaxy merger and a spiral isolated galaxy observed with MaNGA.
María del Carmen Argudo Fernández, Fangting Yuan, Shiyin Shen, Jun Yin, Ruixiang Chang, Shuai Feng   +5 more
doaj   +1 more source

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

A Physically Motivated Framework to Compare the Merger Timescales of Isolated Low- and High-mass Galaxy Pairs Across Cosmic Time

The Astrophysical Journal
The merger timescales of isolated low-mass pairs (10 ^8 < M _* < 5 × 10 ^9 M _⊙ ) on cosmologically motivated orbits have not yet been studied in detail, though isolated high-mass pairs (5 × 10 ^9 < M _* < 10 ^11 M _⊙ ) have been studied extensively.
Katie Chamberlain, Ekta Patel, Gurtina Besla, Paul Torrey, Vicente Rodriguez-Gomez   +4 more
doaj   +1 more source

GMRT Detection of HI 21 cm-line Absorption from the Peculiar Galaxy in Abell 2125

, 2000
Using the recently completed Giant Meterwave Radio Telescope, we have detected the HI 21 cm-line absorption from the peculiar galaxy C153 in the galaxy cluster Abell 2125.
A. Dressler, F. N. Owen, F. N. Owen, G. D. Wirth, G. S. Shostak, G. Swarup, J. E. Barnes, J. E. Gunn, J. H. Gorkom van, J. M. Dickey, J. M. Hulst van der, K. S. Dwarakanath, K. S. Dwarakanath, K. S. Dwarakanath, R. J. Lavery, W. J. Couch   +15 more
core   +3 more sources

Ring or No Ring—Revisiting the Multiphase Nuclear Environment in M31

The Astrophysical Journal
Nuclear rings, prevalent in barred galaxies, are essential to understanding gas transport toward galactic nuclei. However, the peculiar nuclear ring in our neighboring galaxy M31 remains poorly understood.
Zongnan Li, Zhao Su, Sumin Wang, Yufan F. Zhou, Zhiyuan Li, Xuanyi Lyu, Fanyi Meng, Kai Zhang, Di Li, Chaowei Tsai, Jingwen Wu, Jiachang Zhang   +11 more
doaj   +1 more source

The impact of interactions, bars, bulges, and AGN on star formation efficiency in local massive galaxies

, 2012
Using observations from the GASS and COLD GASS surveys and complementary data from SDSS and GALEX, we investigate the nature of variations in gas depletion time observed across the local massive galaxy population.
Aalto, Abdo, Abraham, Alonso-Herrero, Amélie Saintonge, Barbara Catinella, Bell, Bell, Bigiel, Bigiel, Bigiel, Blanc, Blitz, Bolatto, Bournaud, Carsten Kramer, Combes, Conselice, Daddi, Dame, Dasyra, David Schiminovich, Diamond-Stanic, Donovan Meyer, Downes, Elfhag, Elmegreen, Engel, Evans, Feldmann, Franx, Gao, Genzel, Giovanelli, Graciá-Carpio, Graciá-Carpio, Graves, Haynes, Helfer, Heyer, Ho, Häring, Israel, Javier Graciá-Carpio, Jing Wang, Jogee, Juneau, Karl Schuster, Kewley, Krumholz, Kuno, Leroy, Leroy, Leroy, Leroy, Linda J. Tacconi, Lotz, Lotz, Magnelli, Magorrian, Maiolino, Martig, Martin, Merloni, Mirabel, Moran, Nakamura, Nishiyama, Noeske, Papadopoulos, Peng, Rahman, Regan, Reinhard Genzel, Rodighiero, Rosolowsky, Sakamoto, Salim, Schiminovich, Schruba, Sean Moran, Sheth, Shi, Shimasaku, Silvia Fabello, Solomon, Stijn Wuyts, Strateva, Strong, Tacconi, Timothy M. Heckman, Tremaine, Tremonti, Veilleux, Wada, Wake, Wei, Wiklind, Wong, Wuyts, Young   +100 more
core   +1 more source

AGNs and galaxy interactions

, 2007
We perform a statistical analysis of AGN host characteristics and nuclear activity for AGNs in pairs and without companions. Our study concerns a sample of AGNs derived from the SDSS-DR4 data by Kauffmann et al (2003) and pair galaxies obtained from the same data set by Alonso et al. (2006).
Alonso, M. Sol, Lambas, Diego G., Tissera, Patricia, Coldwell, Georgina   +3 more
openaire   +2 more sources

The Curious Case of CysE: Diversity and Distribution of Serine Acetyltransferases in Bacteria

Proteins: Structure, Function, and Bioinformatics, EarlyView.
ABSTRACT Serine acetyltransferase (CysE) is a member of the left‐handed β‐helix family of acetyltransferases that catalyze the rate limiting step in de novo cysteine biosynthesis. There are two isoforms of CysE that differ in length, with the shorter isoform lacking approximately 76 amino acids at the N‐terminus of the protein from the serine ...
Keely E. A. Oldham, Adele K. Williamson, Emily K. Grout, Joanna L. Hicks   +3 more
wiley   +1 more source