Results 71 to 80 of about 208,581 (197)

Chemo-dynamical Evolution of Galaxies

, 2023
Stars are fossils that retain the history of their host galaxies. Elements heavier than helium are created inside stars and are ejected when they die. From the spatial distribution of elements in galaxies, it is therefore possible to constrain the physical processes during galaxy formation and evolution.
Kobayashi, Chiaki, Taylor, Philip
openaire   +2 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

Dark-ages reionization and galaxy formation simulation--VII. The sizes of high-redshift galaxies

, 2016
We investigate high-redshift galaxy sizes using a semi-analytic model constructed for the Dark-ages Reionization And Galaxy-formation Observables from Numerical Simulation project.
Angel, Paul W., Duffy, Alan R., Geil, Paul M., Liu, Chuanwu, Mesinger, Andrei, Mutch, Simon J., Poole, Gregory B., Wyithe, J. Stuart B.   +7 more
core   +1 more source

Revealing the Impact of Critical Stellar Central Density on Galaxy Quenching through Cosmic Time

The Astrophysical Journal
In a previous work, we investigated the structural and environmental dependence on quenching in the nearby universe. In this work, we extend our investigations to higher redshifts by combining galaxies from the Sloan Digital Sky Survey and The FourStar ...
Bingxiao Xu, Yingjie Peng
doaj   +1 more source

Pairwise dwarf galaxy formation and galaxy downsizing: some clues from extremely metal-poor Blue Compact Dwarf galaxies

, 2011
Some of the extremely metal-poor Blue Compact Dwarf galaxies (XBCDs) in the nearby universe form galaxy pairs with remarkably similar properties. This fact points to an intriguing degree of synchronicity in the formation history of these binary dwarf ...
H-H Loose, ID Karachentsev, KY Lo, P Papaderos, P Papaderos, P Papaderos, P Papaderos, P Papaderos, S Silich, SA Pustilnik, SA Pustilnik, V Icke, YI Izotov   +12 more
core   +1 more source

The Morphological Evolution of Galaxies

Science, 2001
Many galaxies have taken on their familiar appearance relatively recently. In the distant Universe, galaxy morphology deviates significantly (and systematically) from that of nearby galaxies at redshifts (z) as low as 0.3. This corresponds to a time ∼3.5 × 109years in the past, which is only ∼25% of the present age of the Universe.
Abraham, Roberto G., Bergh, Sidney van den   +1 more
openaire   +3 more sources

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

Roles of Supernova and Active Galactic Nucleus Feedback in Shaping the Baryonic Content in a Wide Range of Dark Matter Halo Masses

The Astrophysical Journal Supplement Series
We build upon FEGA25 , a previously introduced semianalytic model (SAM) for galaxy formation and evolution, by focusing on its enhanced treatment of supernova (SN) and active galactic nucleus (AGN) feedback mechanisms.
Emanuele Contini, Changjo Seo, Jinsu Rhee, Seyoung Jeon, Sukyoung K. Yi   +4 more
doaj   +1 more source

A Perspective on the Milky Way Bulge Bar as Seen from the Neutron-capture Elements Cerium and Neodymium with APOGEE

The Astrophysical Journal
This study probes the chemical abundances of the neutron-capture elements cerium and neodymium in the inner Milky Way from an analysis of a sample of ∼2000 stars in the Galactic bulge bar spatially contained within ∣ X _Gal ∣ < 5 kpc, ∣ Y _Gal ∣ < 3.5 ...
J. V. Sales-Silva, K. Cunha, V. V. Smith, S. Daflon, D. Souto, R. Guerço, A. Queiroz, C. Chiappini, C. R. Hayes, T. Masseron, Sten Hasselquist, D. Horta, N. Prantzos, M. Zoccali, C. Allende Prieto, B. Barbuy, R. Beaton, D. Bizyaev, J. G. Fernández-Trincado, P. M. Frinchaboy, J. A. Holtzman, J. A. Johnson, Henrik Jönsson, S. R. Majewski, D. Minniti, D. L. Nidever, R. P. Schiavon, M. Schultheis, J. Sobeck, G. S. Stringfellow, G. Zasowski   +30 more
doaj   +1 more source

Calibrating Nonparametric Morphological Indicators from JWST Images for Galaxies over 0.5 < z < 3

The Astrophysical Journal
The measurements of morphological indicators of galaxies are often influenced by a series of observational effects. In this study, we utilize a sample of 832 TNG50 simulated galaxies with log( M _* / M _⊙ )> 9 at 0.5 < z < 3 to investigate the ...
Jian Ren, F. S. Liu, Nan Li, Qifan Cui, Pinsong Zhao, Yubin Li, Qi Song, Hassen M. Yesuf, Xian Zhong Zheng   +8 more
doaj   +1 more source