Results 71 to 80 of about 205,088 (284)

Exploring the Gas-phase Metallicity Gradients of Star-forming Galaxies at Cosmic Noon

The Astrophysical Journal
We explore the relationships between the [O/H] gas-phase metallicity radial gradients and multiple galaxy properties for 238 star-forming galaxies at 0.6 < z < 2.6 selected from the CANDELS Ly α Emission at Reionization survey with stellar mass $8.5\lt ...
Yingjie Cheng, Mauro Giavalisco, Raymond C. Simons, Zhiyuan Ji, Darren Stroupe, Nikko J. Cleri   +5 more
doaj   +1 more source

Chemical behavior of the Dwarf Irregular Galaxy NGC 6822. Its PN and HII region abundances

, 2009
We aim to derive the chemical behavior of a significant sample of PNe and HII regions in the irregular galaxy NGC 6822 The selected objects are distributed in different zones of the galaxy.
Allen, Bauman, Brandenburg, Carigi, Carigi, Carigi, Costa, de Blok, de Blok, Demers, Dufour, Fisher, Franco, Gieren, Grevesse, Henry, Henry, Hernández-Martínez, Herwig, Hidalgo-Gámez, Hirschi, Hirschi, Hodge, J. García-Rojas, Karakas, Killen, Kingdon, Kingsburgh, Kniazev, Kroupa, L. Carigi, L. Hernández-Martínez, Lee, Leisy, Leisy, Leisy, M. Peña, Magrini, Magrini, Marigo, Massey, Mateo, Meynet, Nomoto, Peimbert, Peimbert, Peña, Porter, Richer, Richer, Seaton, Shaw, Stasinska, Storey, Venn, Wang, Woosley   +56 more
core   +1 more source

Luminosity-Metallicity Relation for dIrr Galaxies in the Near-Infrared

, 2008
(abridged) The present work is a first step to collect homogeneous abundances and near-infrared (NIR) luminosities for a sample of dwarf irregular (dIrr) galaxies, located in nearby groups.
Alloin, Bica, Bouchard, Bruzual, Bruzual, Buzzoni, Cairós, Caldwell, Caldwell, Calura, Cardelli, Chiosi, Côté, D. Alloin, Dekel, Dufour, E. V. Held, Edmunds, F. Bresolin, Ferguson, Ferguson, French, Froebrich, Garnett, Garnett, Gil de Paz, Hamuy, Hamuy, Hidalgo-Gámez, Hidalgo-Gámez, Hidalgo-Gámez, Hirashita, Hummer, Hunt, Hunter, Hunter, Hunter, I. Saviane, Izotov, Izotov, Izotov, Izotov, James, Jarrett, Jerjen, Karachentsev, Karachentsev, Karachentseva, Karachentseva, Kennicutt, Kobulnicky, L. Rizzi, Larson, Lee, Lee, Maeder, Marcolini, Martin, Martin, Mateo, Mendes de Oliveira, Miller, Moorwood, Oke, Persson, Pilyugin, Pilyugin, Pilyugin, Pilyugin, R. M. Rich, Richer, Roy, Salzer, Saviane, Saviane, Saviane, Schlegel, Schmidt, Schmidt, Searle, Shi, Silich, Skillman, Skillman, Skillman, Skillman, Stasinska, Storchi-Bergmann, Thuan, Thuan, Thuan, Tinsley, Tonry, Tosi, Tremonti, V. D. Ivanov, Vaduvescu, van Zee, van Zee, Vanzi, Vigroux   +100 more
core   +1 more source

Gas-phase oxygen abundances and radial metallicity gradients in the two nearby spiral galaxies NGC7793 and NGC4945 [PDF]

, 2015
Gas-phase abundances in HII regions of two spiral galaxies, NGC7793 and NGC4945, have been studied to determine their radial metallicity gradients. We used the strong-line method to derive oxygen abundances from spectra acquired with GMOS-S, the multi ...
Casasola, Viviana, Magrini, Laura, Stanghellini, Letizia   +2 more
core   +2 more sources

Allobaculum plays a predominant role in the activation of brown fat tissue by diallyl trisulfide

Food Frontiers, EarlyView.
Diallyl trisulfide activates brown adipose tissue and prevents obesity by promoting the relative abundance of Allobaculum in the gut of mice. Oral supplementation of Allobaculum stercoricanis, a primary species in Allobaculum, activates brown adipose tissue and prevents obesity.
Yanzhou Hu, Ye Xu, Bingxin Huangfu, Ruiqi Zhang, Jia Xu, Ruxin Gao, Teng Wang, Jiantang Wang, Kunlun Huang, Yunbo Luo, Xiaoyun He   +10 more
wiley   +1 more source

[ArIII]/[OIII] and [SIII]/[OIII]: well-behaved oxygen abundance indicators for HII regions and star forming galaxies [PDF]

, 2006
We propose two statistical methods to derive oxygen abundances in HII regions and star forming galaxies and calibrate them with a sample of several hundred giant HII regions in spiral and blue compact galaxies as well as of galaxies from the Sloan Digital Sky Survey. We show the advantages of our new abundance indicators over previous ones.
arxiv   +1 more source

Abundance Ratios in Hierarchical Galaxy Formation [PDF]

Monthly Notices of the Royal Astronomical Society, 1999
7 pages, 3 figures, accepted by ...
openaire   +7 more sources

Stellar Abundances in Local Group Galaxies [PDF]

Highlights of Astronomy, 2005
AbstractHere we describe some of our latest results from measuring detailed abundances in Local Group dwarf galaxies with the VLT. Combining spectroscopic abundances with Color-Magnitude diagrams allows the effective measurement of detailed chemical evolution with time in these galaxies.
Eline Tolstoy, Kim Venn
openaire   +3 more sources

Integrative cross‐tissue analysis unveils complement‐immunoglobulin augmentation and dysbiosis‐related fatty acid metabolic remodeling during mammalian aging

iMeta, EarlyView.
Our study provides a comprehensive multi‐omics profile of aging, integrating proteomic, metabolomic, and metagenomic analyses across diverse tissues and plasma. We identified the synergistic amplification of the circulating complement system and tissue‐wide immunoglobulin accumulation as key molecular drivers of inflammaging.
Feng Zhang, Rong Li, Yasong Liu, Jinliang Liang, Yihang Gong, Cuicui Xiao, Jianye Cai, Tingting Wang, Qiang You, Jiebin Zhang, Haitian Chen, Jiaqi Xiao, Yingcai Zhang, Yang Yang, Hua Li, Jia Yao, Qi Zhang, Jun Zheng   +17 more
wiley   +1 more source

An Equilibrium Model of the Galaxy Determined by Element Abundance Gradients

The Astrophysical Journal
We present a method to determine the gravitational potential of the Milky Way from measurements of the locations, velocities, and element abundances of stars in the Galactic disk.
Lawrence M. Widrow, David W. Hogg, Danny Horta, Haochaun Li, Adrian M. Price-Whelan   +4 more
doaj   +1 more source