Results 31 to 40 of about 5,210 (162)

Morphological Demographics of Galaxies at z ∼ 10–16: Log-normal Size Distribution and Exponential Profiles Consistent with the Disk Formation Scenario

The Astrophysical Journal
We homogeneously investigate the morphological properties of 169 galaxies at z  ∼ 10–16 with deep JWST NIRCam images employing our established techniques of GALFIT modeling and uncertainty evaluation (systematics+statistics).
Yoshiaki Ono, Masami Ouchi, Yuichi Harikane, Hidenobu Yajima, Kimihiko Nakajima, Seiji Fujimoto, Minami Nakane, Yi Xu   +7 more
doaj   +1 more source

The Formation and Evolution of Field Massive Galaxies [PDF]

Astrophysics and Space Science, 2003
The problem of the formation and evolution of field massive galaxies is briefly reviewed from an observational perspective. The motivations and the characteristics of the K20 survey are outlined. The redshift distribution of Ks<20 galaxies, the evolution of the rest-frame Ks-band luminosity function and luminosity density to z=1.5, the nature and ...
openaire   +2 more sources

Searching within Galaxies for the Earliest Signs of Quenching With Spatially Resolved Star Formation Histories in UVCANDELS Galaxies at z < 0.3

The Astrophysical Journal
Understanding the complicated processes that regulate star formation and cause a galaxy to become quiescent is key to our comprehension of galaxy evolution.
Charlotte Olsen, Eric Gawiser, Charlotte Welker, Harry Teplitz, Kartheik Iyer, Xin Wang, Marc Rafelski, Rogier A. Windhorst, Anton Koekemoer, Anahita Alavi, Ben Sunnquist, Norman Grogin, Yicheng Guo, Christopher J. Conselice, L. Y. Aaron Yung, Kalina Nedkova, Bahram Mobasher, Ray A. Lucas, Vihang Mehta, Y. Sophia Dai, Jonathan P. Gardner   +20 more
doaj   +1 more source

Star Formation Quenching in Quasar Host Galaxies

Frontiers in Astronomy and Space Sciences, 2017
Galaxy evolution is likely to be shaped by negative feedback from active galactic nuclei (AGN). In the whole range of redshifts and luminosities studied so far, galaxies hosting an AGN frequently show fast and extended outflows consisting in both ionized
Stefano Carniani, Stefano Carniani
doaj   +1 more source

Fine-grained Morphological Study of Galaxy Pairs: A Human-in-the-loop Self-supervised Classification Framework

The Astronomical Journal
Galaxy pairs, as key probes for studying galaxy formation and evolution, provide a unique window for observing galaxy interactions, including the associated exchange of material and related galaxy formation activities.
Yating Li, Jiang-hui Cai, Hai-feng Yang, Jie Wang, Lihua Hu   +4 more
doaj   +1 more source

The History of Galaxy Mergers in IllustrisTNG

Universe
The process of galaxy evolution over cosmic time is not yet fully understood, since there is a debate on the impact of galaxy collisions on the star formation and metallicity.
Bendeguz Koncz, Istvan Horvath, András Péter Joó, Andreas Burkert, L. Viktor Tóth   +4 more
doaj   +1 more source

Stochastic 2-D Models of Galaxy Disk Evolution. The Galaxy M33

Open Astronomy, 2014
We have developed a fast numerical 2-D model of galaxy disk evolution (resolved along the galaxy radius and azimuth) by adopting a scheme of parameterized stochastic self-propagating star formation.
Mineikis T., Vansevičius V.
doaj   +1 more source

Evolution of the Physical Properties of the Most Massive Galaxies in Clusters and Their Protohalos

The Astrophysical Journal
We investigated the evolution of the physical properties of the brightest galaxies in clusters and their protohalos from z = 4 to z = 0. Galaxy clusters and groups are identified using a halo-based group finder applied to the COSMOS2020 galaxy catalog ...
Qingyang Li, Xiaohu Yang, Antonios Katsianis, Paola Popesso, Ilaria Marini, Y. Sophia Dai, Chengze Liu, Yipeng Jing, Jia-Sheng Huang, Marcin Sawicki   +9 more
doaj   +1 more source

Targeting cluster galaxies for the 4MOST CHANCES Low-z sub-survey with photometric redshifts

Astronomy & Astrophysics
Context. The evolution of galaxies is shaped by both internal processes and their external environments. Galaxy clusters and their surroundings provide ideal laboratories to study these effects, particularly with respect to mechanisms such as quenching ...
Méndez-Hernández Hugo, Lima-Dias Ciria, Monachesi Antonela, Jaffé Yara L., Haines Christopher P., Teixeira Gabriel S. M., Lösch Elismar, Baier-Soto Raúl, Lima Erik V. R., Amrutha B. M., Bom C. R., D’Ago Giuseppe, Demarco Ricardo, Finoguenov Alexis, Haack Rodrigo F., Lopes Amanda R., de Oliveira C. Mendes, Merluzzi Paola, Piraino-Cerda Franco, Smith Castelli Analía V., Sifón Cristobal, Sodré Laerte, Tejos Nicolás, Torres-Flores Sergio, Argudo-Fernández Maria, Crossett Jacob P., Ibar E., Kuchner Ulrike, Lacerna Ivan, Lopes-Silva Vitor H., Lopez Sebastián, McGee Sean, Morelli Lorenzo, Nantais Julie, Olivares V. Patricio, Pallero Diego, Poggianti Bianca M., Pompei Emanuela, Sampaio V. M., Vulcani Benedetta, Zenteno Alfredo, Almeida-Fernandes F., Bilicki Maciej, Carvalho M. S., Cheng Cheng, Figueiredo A. L.,, Gutiérrez-Soto L. A., Herpich F. R., Kanaan A., Lacerda E A. D., Nakazono L., Oliveira Schwarz G. B., Ribeiro T., Roukema Boudewijn F., Sartori Marília J., Santos-Silva Thaís, Schoenell W.   +56 more
doaj   +1 more source

The Evolution of the Mass-Metallicity Relation at 0.20 < z < 0.35 [PDF]

Journal of Astronomy and Space Sciences, 2013
We present a spectroscopic study of 343 blue compact galaxies (BCGs) at 0.20 < z < 0.35 from the Sloan Digital Sky Survey (SDSS) DR7 data. We derive gas phase oxygen abundance using the empirical and direct method.
Jiwon Chung, Soo-Chang Rey, Eon-Chang Sung   +2 more
doaj   +1 more source