Results 101 to 110 of about 30,724 (219)

Quenching through Tidal Gas Removal: Molecular Gas and Star Formation in Tidal Tails of z ∼ 0.7 Post-starburst Galaxies

The Astrophysical Journal
The active suppression of star formation in galaxies is critical for preventing the growth of overly massive systems and explaining the formation of present-day elliptical galaxies.
Vincenzo R. D’Onofrio, Justin S. Spilker, Rachel Bezanson, Robert Feldmann, Andy D. Goulding, Jenny E. Greene, Mariska Kriek, Yuanze Luo, Desika Narayanan, David J. Setton, Katherine A. Suess, Yunchong Zhang, Pengpei Zhu   +12 more
doaj   +1 more source

Star-forming compact groups: Tracing the early evolutionary stages of compact group environments

Astronomy & Astrophysics
Context. In the context of pre-processing – a scenario where galaxies quench their star formation within substructures before falling into clusters – we investigate the impact of environment on the physical and morphological properties of galaxies in ...
Ortiz-Gómez S., Torres-Flores S., Monachesi A., Montaguth G. P., Véliz Astudillo S., Mendes de Oliveira C., Olave-Rojas D. E., Lima-Dias C., Demarco R., Pallero D., Lopes A. R., Cortesi A., Telles E., Kanaan A., Ribeiro T., Schoenell W.   +15 more
doaj   +1 more source

COSMOS-Web: Unraveling the Evolution of Galaxy Size and Related Properties at 2 < z < 10

The Astrophysical Journal Supplement Series
We measure galaxy sizes from 2 
Lilan Yang, Jeyhan S. Kartaltepe, Maximilien Franco, Xuheng Ding, Mark J. Achenbach, Rafael C. Arango-Toro, Caitlin M. Casey, Nicole E. Drakos, Andreas L. Faisst, Steven Gillman, Ghassem Gozaliasl, Marc Huertas-Company, Shuowen Jin, Daizhong Liu, Georgios Magdis, Richard Massey, John D. Silverman, Takumi S. Tanaka, Si-Yue Yu, Hollis B. Akins, Natalie Allen, Olivier Ilbert, Anton M. Koekemoer, Henry Joy McCracken, Louise Paquereau, Jason Rhodes, Brant E. Robertson, Marko Shuntov, Sune Toft   +28 more
doaj   +1 more source

Secondary evolution of galaxies investigated by N-body simulations

, 2008
In the ΛCDM cosmology, merging is one of the most important physical processes that drives the formation and evolution of galaxies. In the present work, we use N-body techniques to investigate some of currently open issues related to the formation and ...
Coppola, Giuseppina
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266 E+A galaxies selected from the Sloan Digital Sky Survey Data Release 2: the origin of E+A galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2005
E+A galaxies are characterized as a galaxy with strong Balmer absorption lines but without any [OII] nor H$α$ emission lines. The existence of strong Balmer absorption lines indicates that E+A galaxies have experienced starburst within recent one Gyr.
openaire   +2 more sources

Combined Fit of Spectrum and Composition for FR0 Radio-galaxy-emitted Ultra–high energy Cosmic Rays with Resulting Secondary Photons and Neutrinos

The Astrophysical Journal
This study comprehensively investigates the gamma-ray dim population of Fanaroff–Riley Type 0 (FR0) radio galaxies as potentially significant sources of ultra–high energy cosmic rays (UHECRs, E > 10 ^18 eV) detected on Earth.
Jon Paul Lundquist, Serguei Vorobiov, Lukas Merten, Anita Reimer, Margot Boughelilba, Paolo Da Vela, Fabrizio Tavecchio, Giacomo Bonnoli, Chiara Righi   +8 more
doaj   +1 more source

Spatially resolved spectroscopy of faint star-forming galaxies & their environments in the high redshift universe [PDF]

, 2011
This thesis is concerned with the spectroscopic observations of distant galaxies, 1 < z < 5. The galaxies presented here are intrinsically faint such that their ux is dominated by ordinary star formation rather than galaxy-galaxy merging and/or ...
Hurley, Mairéad
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An automated polarimeter and its use in the study of active galaxies [PDF]

, 1996
In this thesis I present the design and development of an automated polarimeter for use in mapping the percentage levels and position angles of linearly polarized light from extended astronomical objects.
Stockdale, D.P., Stockdale, D.
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The AURORA Survey: Tracing Galactic Outflows at z ≳ 2.5 with JWST/NIRSpec Near-ultraviolet Absorption Lines

The Astrophysical Journal
We probe galactic-scale outflows in star-forming galaxies at z  ≳ 2.5 drawn from the JWST/NIRSpec AURORA program. For the first time, we directly compare outflow properties from the early Universe to the present day using near-UV absorption lines.
Emily Kehoe, Alice E. Shapley, Ryan L. Sanders, Naveen A. Reddy, Michael W. Topping, Natalie Lam, Leonardo Clarke, Fergus Cullen, Richard S. Ellis, N. M. Förster Schreiber, Tucker Jones, Ali Ahmad Khostovan, Derek J. McLeod, Ross J. McLure, Desika Narayanan, Pascal Oesch, Anthony J. Pahl   +16 more
doaj   +1 more source

X-ray luminous clusters of galaxies at z > 0.3 [PDF]

, 2003
This thesis presents optical CCD imaging taken as part of the follow-up programme to the Massive Cluster Survey, a ROSAT All-Sky Survey based cluster survey aiming to discover X-ray luminous galaxy clusters at redshifts above 0.3.
Courtney, Nathan James Daniel
core