Results 61 to 70 of about 211,606 (245)

Revisiting the Fundamental Metallicity Relation with Observation and Simulation

The Astrophysical Journal Letters
The gas-phase metallicity of galaxies is regulated by multiple astrophysical processes, which makes it a crucial diagnostic of galaxy formation and evolution.
Chengyu Ma, Kai Wang, Enci Wang, Yingjie Peng, Haochen Jiang, Haoran Yu, Cheng Jia, Zeyu Chen, Haixin Li, Xu Kong   +9 more
doaj   +1 more source

Gas circulation and galaxy evolution

, 2010
Galaxies must form and evolve via the acquisition of gas from the intergalactic environment, however the way this gas accretion takes place is still poorly understood.
Fraternali, Filippo
core   +1 more source

JWST/NIRSpec Measurements of Extremely Low Metallicities in High Equivalent Width Lyα Emitters

The Astrophysical Journal, 2023
Deep Very Large Telescope/MUSE optical integral field spectroscopy has recently revealed an abundant population of ultra-faint galaxies ( M _UV ≈ −15; 0.01 L _⋆ ) at z = 2.9−6.7 due to their strong Ly α emission with no detectable continuum.
Michael V. Maseda, Zach Lewis, Jorryt Matthee, Joseph F. Hennawi, Leindert Boogaard, Anna Feltre, Themiya Nanayakkara, Roland Bacon, Amy Barger, Jarle Brinchmann, Marijn Franx, Takuya Hashimoto, Hanae Inami, Haruka Kusakabe, Floriane Leclercq, Lucie Rowland, Anthony J. Taylor, Christy Tremonti, Tanya Urrutia, Joop Schaye, Charlotte Simmonds, Eloïse Vitte   +21 more
doaj   +1 more source

Modeling the Ages and Chemical Abundances of Elliptical Galaxies

The Astrophysical Journal
Spectroscopic studies of elliptical galaxies show that their stellar population ages, mean metallicity, and α enhancement traced by [Mg/Fe] all increase with galaxy stellar mass or velocity dispersion.
Nicole Marcelina Gountanis, David H. Weinberg, Aliza G. Beverage, Nathan R. Sandford, Charlie Conroy, Mariska Kriek   +5 more
doaj   +1 more source

Spatial Variations of Stellar Elemental Abundances in FIRE Simulations of Milky Way-mass Galaxies: Patterns Today Mostly Reflect Those at Formation

The Astrophysical Journal
Spatial patterns of stellar elemental abundances encode rich information about a galaxy’s formation history. We analyze the radial, vertical, and azimuthal variations of metals in stars, both today and at formation, in the FIRE-2 cosmological simulations
Russell L. Graf, Andrew Wetzel, Matthew A. Bellardini, Jeremy Bailin   +3 more
doaj   +1 more source

Stellar Half-mass Radii of 0.5 z < 2.3 Galaxies: Comparison with JWST/NIRCam Half-light Radii

The Astrophysical Journal, 2023
We  use CEERS JWST/NIRCam imaging to measure rest-frame near-IR light profiles of 435 M _⋆ > 10 ^10 M _⊙ galaxies in the redshift range of 0.5 < z < 2.3.
Arjen van der Wel, Marco Martorano, Boris Häußler, Kalina V. Nedkova, Tim B. Miller, Gabriel B. Brammer, Glenn van de Ven, Joel Leja, Rachel S. Bezanson, Adam Muzzin, Danilo Marchesini, Anna de Graaff, Erica J. Nelson, Mariska Kriek, Eric F. Bell, Marijn Franx   +15 more
doaj   +1 more source

Velocity Dispersion of 335 Galaxy Clusters Selected from the Sloan Digital Sky Survey: Statistical Evidence for Dynamical Interaction, and Against Ram-Pressure Stripping

, 2005
There has been plenty of observational evidence of cluster galaxy evolution. However, it has been difficult to identify the origin of the cluster galaxy evolution. Here we show that gravitational interaction/friction between galaxies is the statistically
Abadi, Abazajian, Adami, Adami, Andreon, Andreon, Andreon, Beers, Bekki, Bennett, Biviano, Biviano, Blanton, Butcher, Butcher, Carlberg, Couch, Couch, Czoske, Danese, Dressler, Ellingson, Fabricant, Farouki, Fasano, Finn, Fujita, Fujita, Fujita, Gal, Goto, Goto, Goto, Goto, Goto, Goto, Goto, Goto, Goto, Goto, Goto, Gunn, Gómez, Icke, Jones, Kauffmann, Kauffmann, Kennicutt, Kent, Kodama, Kodama, Lares, Larson, Lavery, Makino, Mamon, Mamon, Margoniner, Margoniner, McIntosh, Moore, Moore, Ostriker, Poggianti, Postman, Postman, Postman, Quilis, Rakos, Schlegel, Shimasaku, Sodre, Stein, Strateva, Tanaka, Tomotsugu Goto, Treu, van Dokkum, Yamauchi, Zabludoff   +79 more
core   +1 more source

The Next Generation Deep Extragalactic Exploratory Public (NGDEEP) Survey

The Astrophysical Journal Letters
We present the Next Generation Deep Extragalactic Exploratory Public (NGDEEP) Survey, a deep slitless spectroscopic and imaging Cycle 1 JWST treasury survey designed to constrain feedback mechanisms in low-mass galaxies across cosmic time. NGDEEP targets
Micaela B. Bagley, Nor Pirzkal, Steven L. Finkelstein, Casey Papovich, Danielle A. Berg, Jennifer M. Lotz, Gene C. K. Leung, Henry C. Ferguson, Anton M. Koekemoer, Mark Dickinson, Jeyhan S. Kartaltepe, Dale D. Kocevski, Rachel S. Somerville, L. Y. Aaron Yung, Bren E. Backhaus, Caitlin M. Casey, Marco Castellano, Óscar A. Chávez Ortiz, Katherine Chworowsky, Isabella G. Cox, Romeel Davé, Kelcey Davis, Vicente Estrada-Carpenter, Adriano Fontana, Seiji Fujimoto, Jonathan P. Gardner, Mauro Giavalisco, Andrea Grazian, Norman A. Grogin, Nimish P. Hathi, Taylor A. Hutchison, Anne E. Jaskot, Intae Jung, Lisa J. Kewley, Allison Kirkpatrick, Rebecca L. Larson, Jasleen Matharu, Priyamvada Natarajan, Laura Pentericci, Pablo G. Pérez-González, Swara Ravindranath, Barry Rothberg, Russell Ryan, Lu Shen, Raymond C. Simons, Gregory F. Snyder, Jonathan R. Trump, Stephen M. Wilkins   +47 more
doaj   +1 more source

The physics of galaxy evolution with EAGLE [PDF]

1st AO4ELT conference - Adaptive Optics for Extremely Large Telescopes, 2010
6 pages, 4 Figures, to appear in the proceedings of the AO4ELT meeting held in Paris, 22-26 June ...
Puech, Mathieu, Lehnert, Matthew D., Yang, Yanbin, Cuby, Jean-Gabriel, Morris, Simon L., Evans, Christopher J., Neichel, Benoît, Fusco, Thierry, Rousset, Gérard, Flores, Hector   +9 more
openaire   +4 more sources

Exploring the Relationship between Stellar Mass, Metallicity, and Star Formation Rate at z ∼ 2.3 in KBSS-MOSFIRE

The Astrophysical Journal
The metal enrichment of a galaxy is determined by the cycle of baryons in outflows, inflows, and star formation. The relative contribution and timescale of each process sets the relationship between stellar mass, metallicity, and the star formation rate (
Nathalie A. Korhonen Cuestas, Allison L. Strom, Tim B. Miller, Charles C. Steidel, Ryan F. Trainor, Gwen C. Rudie, Evan Haze Nuñez   +6 more
doaj   +1 more source