Results 51 to 60 of about 5,210 (162)

The Formation and Evolution of S0 Galaxies [PDF]

, 2007
Ph.D. Thesis submitted to The University of Nottingham, U.K.
openaire   +4 more sources

Properties of barred galaxies with the environment

Astronomy & Astrophysics
Context. Bars are elongated structures developed by a large fraction of disk galaxies in their central few kiloparsecs. However, the bar formation process is still not fully understood, particularly the role played by the galaxy environment in the ...
Cuomo Virginia, Aguerri J. Alfonso L., Morelli Lorenzo, Choque-Challapa Nelvy, Zarattini Stefano   +4 more
doaj   +1 more source

An Hα Cloud in the H I Tail: Recent Star Formation in the Outskirts of NGC 4258 Revealed by Nanshan 1 m Telescope

The Astronomical Journal
We present first-light deep H α imaging taken with the Nanshan 1 m wide-field telescope on the local galaxy NGC 4258, alongside archival data from Hubble Space telescope (HST), Westerbork Synthesis Radio Telescope, and The Dark Energy Camera Legacy ...
Cheng Cheng, Jia-Sheng Huang, Peng Wei, Ali Esamdin, Guojie Feng, Zhi-Xiang Zhang, Haojing Yan, Wei Du, Pei Zuo, Zijian Li, Gustavo Orellana-González, Letian Wang, Yong Wang, Abdusamatjan Iskandar, Shahidin Yaqup   +14 more
doaj   +1 more source

Star Formation and Magnetic Field Amplification due to Galactic Spirals

The Astrophysical Journal
We use global MHD galaxy simulations to investigate the effects of spiral arms on the evolution of magnetic fields and star formation within a self-regulated interstellar medium.
Hector Robinson, James Wadsley, J. A. Sellwood, Ralph E. Pudritz   +3 more
doaj   +1 more source

Caught in the act: Interaction-driven evolution in the nearby compact galaxy group Robert’s Quartet (SCG0018-4854)

Astronomy & Astrophysics
We present a spatially resolved multiwavelength study of the compact galaxy group Robert’s Quartet (RQ; SCG0018-4854), aimed at understanding interaction-driven galaxy evolution in dense environments.
Keshri Saili, Barway Sudhanshu, Das Mousumi, Paswan Abhishek   +3 more
doaj   +1 more source

Quantifying Bursty Star Formation in Dwarf Galaxies

The Open Journal of Astrophysics
Dwarf galaxy star formation histories are theoretically expected to be bursty, potentially leaving distinct imprints on their chemical evolution. We propose that episodic starbursts with quiescent periods longer than ~100 Myr should lead to discontinuous
Yuan-Sen Ting, Alexander Ji
doaj   +1 more source

Tracing Galaxy Evolution by Their Present-Day Luminosity Function

Open Astronomy, 2011
Galaxy luminosity functions are derived for different morphological types and various colors of galaxies, to trace the evolutionary effects which a priori should be different for void and supercluster galaxies.
Tempel E.
doaj   +1 more source

Quantifying the Velocity Anisotropy Profile of Galaxy Clusters Using the Uchuu Cosmological Simulation

The Astrophysical Journal
Galaxy clusters are powerful laboratories for studying both cosmic structure formation and galaxy evolution. We present a comprehensive analysis of the velocity anisotropy profile, β ( r ), in galaxy clusters using the Uchuu-UniverseMachine mock galaxy ...
Mohamed H. Abdullah, Raouf H. Mabrouk, Tomoaki Ishiyama, Gillian Wilson, Magdy Y. Amin, Elamira Hend Khattab, H. I. Abdel Rahman   +6 more
doaj   +1 more source

The Cosmic Owl: Twin Active Collisional Ring Galaxies with Starburst Merging Front at z = 1.14

The Astrophysical Journal
Galaxy mergers play a critical role in driving galaxy evolution, especially by transforming galaxy morphology, redistributing gas around galaxies, triggering active galactic nuclei (AGN), and stimulating star formation.
Mingyu Li, Bjorn H. C. Emonts, Zheng Cai, Takumi S. Tanaka, Wilfried Mercier, Yunjing Wu, Fujiang Yu, Fengwu Sun, Fuyan Bian, Emanuele Daddi, Xiaohui Fan, Xiaojing Lin, Jianwei Lyu, Jeyhan S. Kartaltepe, Francesco Valentino   +14 more
doaj   +1 more source

Overdense fireworks in GOODS-N: Unveiling a record number of massive dusty star-forming galaxies at z ∼ 5.2 with the N2CLS

Astronomy & Astrophysics
High-density environments, such as early galaxy overdensities, play a critical role in hierarchical structure formation and galaxy evolution, providing an ideal setting for accelerated galaxy growth. The GOODS-N overdensity at z ≃ 5.2 has long been known,
Lagache G., Xiao M., Beelen A., Berta S., Ciesla L., Neri R., Pello R., Adam R., Ade P., Ajeddig H., Amarantidis S., André P., Aussel H., Benoît A., Béthermin M., Bing L.-J., Bongiovanni A., Bounmy J., Bourrion O., Calvo M., Catalano A., Chérouvrier D., Chowdhury U., De Petris M., Désert F.-X., Doyle S., Driessen E. F. C., Ejlali G., Ferragamo A., Gomez A., Goupy J., Hanser C., Katsioli S., Kéruzoré F., Kramer C., Ladjelate B., Leclercq S., Lestrade J.-F., Macías-Pérez J. F., Madden S. C., Maury A., Mayet F., Monfardini A., Moyer-Anin A., Muñoz-Echeverría M., Myserlis I., Oesch P., Paliwal A., Perotto L., Pisano G., Ponthieu N., Revéret V., Rigby A. J., Ritacco A., Roussel H., Ruppin F., Sánchez-Portal M., Savorgnano S., Schuster K., Sievers A., Tucker C., Zylka R.   +61 more
doaj   +1 more source