Results 141 to 150 of about 135,693 (192)

MG II absorption in the spectra of 103 QSOs - Implications for the evolution of gas in high-redshift galaxies

, 1992
Charles C. Steidel, W. L. W. Sargent
openalex   +1 more source

Halo mass functions at high redshift

The Open Journal of Astrophysics
Recent JWST observations of very early galaxies, at $z \geq 10$, has led to claims that tension exists between the sizes and luminosities of high-redshift galaxies and what is predicted by standard ${\Lambda}$CMD models.
Hannah O'Brennan, John A. Regan, Chris Power, Saoirse Ward, John Brennan, Joe McCaffrey   +5 more
doaj   +1 more source

Enhanced Subkiloparsec-scale Star Formation: Results from a JWST Size Analysis of 341 Galaxies at 5 < z < 14

The Astrophysical Journal
We present a comprehensive search and analysis of high-redshift galaxies in a suite of nine public JWST extragalactic fields taken in Cycle 1, covering a total effective search area of $\sim 358\,{\mathrm{arcmin}}^{2}$ .
Takahiro Morishita, Massimo Stiavelli, Ranga-Ram Chary, Michele Trenti, Pietro Bergamini, Marco Chiaberge, Nicha Leethochawalit, Guido Roberts-Borsani, Xuejian Shen, Tommaso Treu   +9 more
doaj   +1 more source

Unveiling the Cosmic Chemistry: Revisiting the Mass–Metallicity Relation with JWST/NIRSpec at 4 < z < 10

The Astrophysical Journal
We present star formation rates (SFRs), the mass–metallicity relation (MZR), and the SFR-dependent MZR across redshifts 4–10 using 81 star-forming galaxies observed by the JWST NIRSpec employing both low-resolution PRISM and medium-resolution gratings ...
Arnab Sarkar, Priyanka Chakraborty, Mark Vogelsberger, Michael McDonald, Paul Torrey, Alex M. Garcia, Gourav Khullar, Gary J. Ferland, William Forman, Scott Wolk, Benjamin Schneider, Mark Bautz, Eric Miller, Catherine Grant, John ZuHone   +14 more
doaj   +1 more source

The structure and composition of high redshift radio galaxies

, 1998
R. A. E. Fosbury, J. Vernet, M. Villar‐Martín, M. H. Cohen, A. Cimatti, S. di Serego Alighieri, P. J. McCarthy   +6 more
openalex   +2 more sources

COSMOS-Web: Intrinsically Luminous z ≳ 10 Galaxy Candidates Test Early Stellar Mass Assembly

The Astrophysical Journal
We report the discovery of 15 exceptionally luminous 10 ≲ z ≲ 14 candidate galaxies discovered in the first 0.28 deg ^2 of JWST/NIRCam imaging from the COSMOS-Web survey.
Caitlin M. Casey, Hollis B. Akins, Marko Shuntov, Olivier Ilbert, Louise Paquereau, Maximilien Franco, Christopher C. Hayward, Steven L. Finkelstein, Michael Boylan-Kolchin, Brant E. Robertson, Natalie Allen, Malte Brinch, Olivia R. Cooper, Xuheng Ding, Nicole E. Drakos, Andreas L. Faisst, Seiji Fujimoto, Steven Gillman, Santosh Harish, Michaela Hirschmann, Shuowen Jin, Jeyhan S. Kartaltepe, Anton M. Koekemoer, Vasily Kokorev, Daizhong Liu, Arianna S. Long, Georgios Magdis, Claudia Maraston, Crystal L. Martin, Henry Joy McCracken, Jed McKinney, Bahram Mobasher, Jason Rhodes, R. Michael Rich, David B. Sanders, John D. Silverman, Sune Toft, Aswin P. Vijayan, John R. Weaver, Stephen M. Wilkins, Lilan Yang, Jorge A. Zavala   +41 more
doaj   +1 more source

EPOCHS. XI. The Structure and Morphology of Galaxies in the Epoch of Reionization to z ∼ 12.5

The Astrophysical Journal
We present a structural analysis of 520 galaxy candidates at 6.5 < z < 12.5 with a signal-to-noise ratio of >10 σ in the F444W filter taken from the EPOCHS v1 sample, consisting of uniformly reduced deep JWST NIRCam data covering the CEERS, JADES GOODS-S,
Lewi Westcott, Christopher J. Conselice, Thomas Harvey, Duncan Austin, Nathan Adams, Fabricio Ferrari, Leonardo Ferreira, James Trussler, Qiong Li, Vadim Rusakov, Qiao Duan, Honor Harris, Caio Goolsby, Thomas J. Broadhurst, Dan Coe, Seth H. Cohen, Simon P. Driver, Jordan C. J. D’Silva, Brenda Frye, Norman A. Grogin, Nimish P. Hathi, Rolf A. Jansen, Anton M. Koekemoer, Madeline A. Marshall, Rafael Ortiz III, Nor Pirzkal, Aaron Robotham, Russell E. Ryan Jr, Jake Summers, Christopher N. A. Willmer, Rogier A. Windhorst, Haojing Yan   +31 more
doaj   +1 more source

Early Bright Galaxies from Helium Enhancements in High-Redshift Star Clusters

The Open Journal of Astrophysics
The first few cycles of JWST have identified an overabundance of UV-bright galaxies and a general excess of UV luminosity density at $z\gtrsim10$ compared to expectations from most (pre-JWST) theoretical models.
Harley Katz, Alexander P Ji, Grace Telford, Peter Senchyna   +3 more
doaj   +1 more source

High-Redshift Milli-Jansky Radio Galaxies [PDF]

, 1996
J. S. Dunlop, J. A. Peacock, Rogier A. Windhorst, H. Spinrad, Arjun Dey, I. Waddington   +5 more
openalex   +1 more source

HST and KECK Observations of High Redshift Radio Galaxies [PDF]

, 1996
W. J. M. van Breugel
openalex   +1 more source