Results 31 to 40 of about 225,753 (242)

Spatially Resolved Stellar Populations of 0.3 < z < 6.0 Galaxies in WHL 0137–08 and MACS 0647+70 Clusters as Revealed by JWST: How Do Galaxies Grow and Quench over Cosmic Time?

The Astrophysical Journal, 2023
We study the spatially resolved stellar populations of 444 galaxies at 0.3 < z < 6.0 in two clusters (WHL 0137–08 and MACS 0647+70) and a blank field, combining imaging data from the Hubble Space Telescope and JWST to perform spatially resolved spectral ...
Abdurro’uf, Dan Coe, Intae Jung, Henry C. Ferguson, Gabriel Brammer, Kartheik G. Iyer, Larry D. Bradley, Pratika Dayal, Rogier A. Windhorst, Adi Zitrin, Ashish Kumar Meena, Masamune Oguri, Jose M. Diego, Vasily Kokorev, Paola Dimauro, Angela Adamo, Christopher J. Conselice, Brian Welch, Eros Vanzella, Tiger Yu-Yang Hsiao, Xinfeng Xu, Namrata Roy, Celia R. Mulcahey   +22 more
doaj   +1 more source

Deep Learning for Galaxy Mergers in the Galaxy Main Sequence [PDF]

, 2019
Starburst galaxies are often found to be the result of galaxy mergers. As a result, galaxy mergers are often believed to lie above the galaxy main sequence: the tight correlation between stellar mass and star formation rate.
Pearson, William J., Petrillo, Carlo E., Trayford, James, van der Tak, Floris F. S., Wang, Lingyu   +4 more
core   +3 more sources

Galaxy Populations in Groups and Clusters: Evidence for a Characteristic Stellar Mass Scale at M ∗ ∼ 109.5 M ⊙

The Astrophysical Journal, 2023
We use the DR9 of the DESI legacy imaging survey and SDSS galaxy groups to measure the conditional luminosity function (CLF) for groups with halo mass M _h ≥ 10 ^12 M _⊙ and redshift 0.01 ≤ z ≤ 0.08, down to a limiting r -band magnitude of M _r = −10 to −
Jiacheng Meng, Cheng Li, H. J. Mo, Yangyao Chen, Zhen Jiang, Lizhi Xie   +5 more
doaj   +1 more source

Gas-Rich Companions of Isolated Galaxies [PDF]

, 1999
We have used the VLA to search for gaseous remnants of the galaxy formation process around six extremely isolated galaxies. We found two distinct HI clouds around each of two galaxies in our sample (UGC 9762 & UGC 11124).
Byrd G. G., D. J. Pisano, Eric M. Wilcots, Huchtmeier W. K., Kamphuis J., Navarro J. F., Navarro J. F.   +6 more
core   +4 more sources

Formation of galaxies

Nuclear Physics B, 1985
Abstract The present theories of galaxy formation are reviewed. The relation between peculiar velocities and the correlation function of galaxies points to the possibility that galaxies do not form uniformly everywhere. Scale invariant properties of the cluster-cluster correlations are discussed. Comparing the correlation functions in a dimensionless
Alexander S. Szalay, Alexander S. Szalay
openaire   +2 more sources

Observing Massive Galaxy Formation

, 2002
A major goal of contemporary astrophysics is understanding the origin of the most massive galaxies in the universe, particularly nearby ellipticals and spirals.
Conselice, Christopher J.
core   +2 more sources

The role of submillimetre galaxies in hierarchical galaxy formation [PDF]

Monthly Notices of the Royal Astronomical Society, 2011
We study the role of submillimetre galaxies (SMGs) in the galaxy formation process in the Lambda Cold Dark Matter cosmology. We use the Baugh et al. (2005) semi-analytical model, which matches the observed SMG number counts and redshift distribution by assuming a top-heavy initial mass function (IMF) in bursts triggered by galaxy mergers.
González, J.E., Lacey, C.G., Baugh, C.M., Frenk, C.S.   +3 more
openaire   +6 more sources

Redshift Evolution of Electron Density in the Interstellar Medium at z ∼ 0–9 Uncovered with JWST/NIRSpec Spectra and Line-spread Function Determinations

The Astrophysical Journal, 2023
We present electron densities n _e in the interstellar medium (ISM) of star-forming galaxies at z = 4–9 observed by the JWST/NIRSpec GLASS, Early Release Observations, and CEERS programs.
Yuki Isobe, Masami Ouchi, Kimihiko Nakajima, Yuichi Harikane, Yoshiaki Ono, Yi Xu, Yechi Zhang, Hiroya Umeda   +7 more
doaj   +1 more source

Quasar induced galaxy formation: a new paradigm ? [PDF]

, 2009
We discuss observational evidence that quasars play a key role in the formation of galaxies starting from the detailed study of the quasar HE0450-2958 and extending the discussion to a series of converging evidence that radio jets may trigger galaxy ...
Alexander, Bahcall, Bahcall, Bahcall, Begelman, Bell, Bicknell, Bohlin, Brinchmann, Bundy, Calzetti, Canalizo, Chary, Comerford, Cowie, Crawford, Croft, Croton, Croton, D. Elbaz, D. Le Borgne, David, de Grijp, Dekel, Dey, Dey, Di Matteo, Di Matteo, Dickson, E. Pantin, Ebeling, Elbaz, Elvis, Fabian, Fanarof, Favata, Feain, Ferrarese, Ferrarese, Fioc, Fitzpatrick, Fragile, Fu, Fu, G. Letawe, Gebhardt, Genzel, Guzman, Haehnelt, Hasinger, Heavens, Hoffman, Hutchings, Hutchings, Jahnke, Juneau, K. Jahnke, Kennicutt, Kim, King, Klamer, Kodama, Kormendy, Letawe, Letawe, Letawe, Letawe, Li, Low, Maddox, Magain, Magain, Magorrian, Manka, Marconi, Matthews, McCarthy, McCarthy, McLeod, McLure, McLure, McLure, Merritt, Mikkola, Miley, Mirabel, Natarajan, Nesvadba, Nesvadba, Nesvadba, Netzer, Ocvirk, Ooosterloo, Panter, Papadopoulos, Papadopoulos, Pipino, Rees, Rejkuba, Richstone, Riechers, Riechers, Sage, Sandage, Sanders, Sanders, Schawinski, Shields, Silk, Silk, Stockton, Stockton, Stockton, Stockton, Stockton, Tadhunter, Thomas, Thompson, Treu, Van Breugel, Vilenkin, Wampler, Willmer, Willott, Willott, Woo, Zirm   +126 more
core   +2 more sources

On the Formation of Elliptical Galaxies [PDF]

The Astrophysical Journal, 1975
Simple collapse and violent relaxation models produce sharply cut off envelopes with ϱ(r) ∝ r–4, whereas actual elliptical galaxies have more extended envelopes approximately given by ϱ(r) ∝ r–3 as implied by Hubble's Law. Numerical models are presented, showing that when cosmological infall effects are included, galaxies are produced with more ...
openaire   +3 more sources