Results 151 to 160 of about 695,772 (397)

MMT Extremely Metal Poor Galaxy Survey I. An Efficient Technique to Identify Metal Poor Galaxies

, 2007
We demonstrate a successful strategy for identifying extremely metal poor galaxies. Our preliminary survey of 24 candidates contains 10 metal poor galaxies of which 4 have 12+log(O/H)
Aller L. H., Campbell A., Izotov Y. I. & Thuan T. X., Kunth D., Kunth D. & Östlin G., Lisa J. Kewley, Margaret J. Geller, Margutti R., Osterbrock D. E., Rego M., Schaller G., Stanek K. Z., Stasinska G., Terlevich R., Warren R. Brown   +14 more
core   +1 more source

Hot Stars, Young Stellar Populations and Dust with Swift/UVOT

Universe
In this review, we highlight the contributions made by the Swift/UVOT instrument to the understanding of the ultraviolet (UV) attenuation and extinction properties of interstellar dust and provide insight into hot stars and young stellar populations. The
Michael H. Siegel, Caryl Gronwall
doaj   +1 more source

Alignment of galaxies relative to their local environment in SDSS-DR8

, 2016
We study the alignment of galaxies relative to their local environment in SDSS-DR8 and, using these data, we discuss evolution scenarios for different types of galaxies. We defined a vector field of the direction of anisotropy of the local environment of
Einasto, M., Hirv, A., Pelt, J., Saar, E., Tago, E., Tamm, A., Tempel, E.   +6 more
core   +1 more source

CANDELS Observations Of The Structural Properties Of Cluster Galaxies At Z=1.62 [PDF]

, 2012
We discuss the structural and morphological properties of galaxies in a z = 1.62 proto-cluster using near-IR imaging data from Hubble Space Telescope Wide Field Camera 3 data of the Cosmic Assembly Near-IR Deep Extragalactic Legacy Survey (CANDELS).
Bassett, Robert, Bell, Eric F., Conselice, Christopher J., Dekel, Avishai, Dunlop, J. S., Faber, S. M., Farrah, D., Ferguson, Henry C., Finkelstein, Keely D., Finkelstein, Steven L., Guo, Y. C., Haussler, Boris, Kocevski, D. D., Koekemoer, A. M., Koo, D. C., Lotz, Jennifer M., McGrath, E. J., McIntosh, Daniel H., McLure, R. J., Momcheva, I., Newman, Jeffrey A., Papovich, Casey, Rudnick, Gregory, Tran, K. V., van der Wel, A., Weiner, B., Willmer, Christopher N. A., Wuyts, S.   +27 more
core   +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

The luminosity function of field galaxies

, 2011
Schmidt's method for construction of luminosity function of galaxies is generalized by taking into account the dependence of density of galaxies from the distance in the near Universe.
A Dressler, A Dressler, A Jr, A Sandage, A Sandage, A. P. Mahtessian, AI Zabludoff, ALB Ribeiro, AP Mahtessian, AP Mahtessian, B Binggeli, B Garilli, B Garilli, BC Bromley, BM Garilli, C Marinoni, CA Valotto, CNA Willmer, D Lynden-Bell, DH Gudehus, E Gaidos, G Efstathiou, H Jerjen, H Lin, H Muriel, HC Ferguson, J Choloniewski, J Huchra, J Loveday, JE Felten, JF Nicol, LF Barrientos, M Paolillo, M Ramella, M Schmidt, MA Arakelyan, MJ Cuesta-Bolao, MM Colless, N Trentham, N Trentham, O Lopez-Cruz, O Lopez-Cruz, P Schechter, PM Lugger, RO Marzke, S Andreon, S Andreon, S Rayzy, SE Zepf, SL Lumsden, SP Driver, T Goto, VYu Terebizh, WR Oegerle, WR Oegerle   +54 more
core   +1 more source

Investigation of the Stellar Population of Several Polar Ring Galaxies

Galaxies, 2016
We present results of our investigation of two multi-spin galaxies which were taken from the catalog of polar ring galaxies. All of them possess nucleus-like knots.
Liliya Shalyapina, Gulnara Karataeva, Olga Merkulova, Valeriya Yakovleva, Nina Yablokova   +4 more
doaj   +1 more source

Gravitational potential and X-ray luminosities of early-type galaxies observed with XMM-Newton and Chandra

, 2009
We study dark matter content in early-type galaxies and investigate whether X-ray luminosities of early-type galaxies are determined by the surrounding gravitational potential.
Anders, Bender, Beuing, Blanton, Canizares, Chakrabarty, Ciotti, Dickey, Diehl, Diehl, Djorgovski, Elvis, Ford, Forman, Fukazawa, Gerhard, Humphrey, Jones, K. Matsushita, Kronawitter, Lin, Machacek, Mathews, Matsushita, Matsushita, Matsushita, Matsushita, Matsushita, Matsushita, Mellier, Navarro, Navarro, O'Sullivan, Prugniel, R. Nagino, Randall, Romanowsky, Smith, Tawara, van Albada, Xu, Zappacosta   +41 more
core   +1 more source

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

High‐Coercivity Nd2Fe14B/α‐Fe Nanocomposites With Ultrafine Nanocrystalline Structure via Zr‐Induced Synchronous Precipitation

Rare Metals, EarlyView.
ABSTRACT Nanocomposite permanent magnets with reduced rare‐earth content represent a promising class of materials for next‐generation high‐performance applications. However, asynchronous precipitation of soft and hard magnetic phases often results in grain size mismatch and limited coercivity.
Xiaowei Zhang, Jun Li, Chang Liu, Renquan Wang, Hongfu Liu, Xiaotao Bao, Ying Liu   +6 more
wiley   +1 more source