Results 1 to 10 of about 148,773 (199)

The star-formation history of the Milky Way Galaxy

, 2009
The star-formation histories of the main stellar components of the Milky Way constrain critical aspects of galaxy formation and evolution. I discuss recent determinations of such histories, together with their interpretation in terms of theories of disk ...
Bensby, Bensby, Bensby, Cignoni, Famaey, François, Maiolino, Nordström, Rocha-Pinto, Rosemary F. G. Wyse, Wyse, Wyse   +11 more
core   +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

The Romulus Cosmological Simulations: A Physical Approach to the Formation, Dynamics and Accretion Models of SMBHs [PDF]

, 2017
We present a novel implementation of supermassive black hole (SMBH) formation, dynamics, and accretion in the massively parallel tree+SPH code, ChaNGa. This approach improves the modeling of SMBHs in fully cosmological simulations, allowing for a more de-
Anderson, Lauren, Bellovary, Jillian, Governato, Fabio, Karcher, Michael, Pontzen, Andrew, Quinn, Tom, Tremmel, Michael, Volonteri, Marta   +7 more
core   +3 more sources

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 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

Galaxy peculiar velocities and evolution-bias [PDF]

, 2007
Galaxy bias can be split into two components: a formation-bias based on the locations of galaxy creation, and an evolution-bias that details their subsequent evolution. In this letter we consider evolution-bias in the peaks model.
Percival, Will J., Schaefer, Bjoern M.
core   +2 more sources

Studying Galaxy Formation and Evolution from Local Group Galaxies [PDF]

, 2007
8 pages, 2 figures. To appear in the proceedings for the VII Scientific Meeting of the Spanish Astronomical Society (SEA) held in Barcelona, September 12-15 ...
openaire   +2 more sources

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 Thick Disk in the Galaxy NGC 4244 from S^4G Imaging [PDF]

, 2010
If thick disks are ubiquitous and a natural product of disk galaxy formation and/or evolution processes, all undisturbed galaxies that have evolved during a significant fraction of a Hubble time should have a thick disk. The late-type spiral galaxy NGC
Athanassoula, E., Bosma, Albert, Buta, Ronald J., Comerón, Sébastien, Elmegreen, Bruce G., Gil de Paz, Armando, Hinz, Joannah L., Ho, Luis C., Holwerda, Benne W., Kim, Taehyun, Knapen, Johan H., Laurikainen, Eija, Menéndez-Delmestre, Karín, Muñoz-Mateos, Juan-Carlos, Regan, Michael W., Salo, Heikki, Schinnerer, Eva, Seibert, Mark, Sheth, Kartik   +18 more
core   +5 more sources

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