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Studies of the distant Universe are providing key insights into our understanding of the formation of galaxies. The advent of the James Webb Space Telescope (JWST) has significantly enhanced our observational capabilities, leading to an…

Astrophysics of Galaxies · Physics 2025-11-13 Jorryt Matthee

The NASA/ESA/CSA James Webb Space Telescope (JWST) will be the successor to the Hubble Space Telescope and may be launched as early as mid-2011. The key scientific goals for JWST are discovering and understanding the formation of the first…

Astrophysics · Physics 2017-11-01 Nino Panagia

Early JWST observations have revealed substantial numbers of galaxies out to redshifts as high as $z \simeq 14$, reflecting a slow evolution of the galaxy UV luminosity function (LF) not anticipated by many models of galaxy evolution. The…

Astrophysics of Galaxies · Physics 2025-04-16 C. T. Donnan , J. S. Dunlop , R. J. McLure , D. J. McLeod , F. Cullen

The James Webb Space Telescope (JWST) has enabled the discovery of a significant population of galaxies at z > 10. Our understanding of the astrophysical properties of these galaxies relies on fitting templates developed using models…

Instrumentation and Methods for Astrophysics · Physics 2026-04-09 Thorbjørn Clausen , Charles L. Steinhardt , Arden Shao , Gaurav Senthil Kumar

Stellar masses in future James Webb Space Telescope (JWST) deep blank-fields will be mainly derived fitting the spectral energy distribution with theoretical galaxy templates. We investigate the uncertainties and biases of the stellar…

We present the first James Webb Space Telescope/NIRCam-led determination of $7<z<9$ galaxy properties based on broadband imaging from 0.8 to 5~$\mathrm{\mu m}$ as part of the GLASS-JWST Early Release Science program. This is the deepest…

The James Webb Space Telescope (JWST) will enable observations of galaxies at redshifts z > 10 and hence allow to test our current understanding of structure formation at very early times. Previous work has shown that the very first…

Cosmology and Nongalactic Astrophysics · Physics 2011-05-10 Andreas H. Pawlik , Milos Milosavljevic , Volker Bromm

The James Webb Space Telescope (JWST) has revealed extremely distant galaxies at unprecedentedly early cosmic epochs from its deep imaging using the technique of photometric redshift estimation, with its subsequent spectroscopy confirming…

Astrophysics of Galaxies · Physics 2023-10-04 Stephen Serjeant , Tom J. L. C. Bakx

The James Webb Space Telescope (JWST) is optimized for observations in the near and mid infrared and will provide essential observations for targets that cannot be conducted from the ground or other missions during its lifetime. The state…

Earth and Planetary Astrophysics · Physics 2016-01-11 Stefanie N. Milam , John A. Stansberry , George Sonneborn , Cristina Thomas

Galaxies grow their supermassive black holes in concert with their stars, although the relationship between these major galactic components is poorly understood. Observations of the cosmic growth of stars and black holes in galaxies suffer…

We present the first results of an ongoing spectroscopic survey of galaxies selected in the rest-frame ultraviolet (UV). The redshift distribution extends over 0<z<0.5 and a high fraction of the sources show intense nebular emission lines…

Astrophysics · Physics 2009-10-30 M. A. Treyer , R. S. Ellis , B. Milliard , J. Donas , T. J. Bridges

The James Webb Space Telescope (JWST) is predicted to make great advances in the field of exoplanet atmospheres. Its 25 m2 mirror means that it can reach unprecedented levels of precision in observations of transit spectra, and can thus…

Earth and Planetary Astrophysics · Physics 2015-02-10 Joanna K. Barstow , Suzanne Aigrain , Patrick G. J. Irwin , Sarah Kendrew , Leigh N. Fletcher

We present a framework for high-redshift ($z \geq 7$) galaxy formation that traces their dark matter (DM) and baryonic assembly in four cosmologies: Cold Dark Matter (CDM) and Warm Dark Matter (WDM) with particle masses of $m_x =$ 1.5, 3…

Astrophysics of Galaxies · Physics 2015-06-17 Pratika Dayal , Andrei Mesinger , Fabio Pacucci

The high-redshift galaxy UV luminosity function (UVLF) has become essential for understanding the formation and evolution of the first galaxies. Yet, UVLFs only measure galaxy abundances, giving rise to a degeneracy between the mean galaxy…

Cosmology and Nongalactic Astrophysics · Physics 2023-08-22 Julian B. Muñoz , Jordan Mirocha , Steven Furlanetto , Nashwan Sabti

The build-up of stellar mass in galaxies is the consequence of their past star formation and merging histories. Here we report measurements of rest-frame optical light and calculations of stellar mass at high redshift based on an…

Astrophysics · Physics 2011-05-05 Mark Dickinson , Casey Papovich , Henry C. Ferguson , Tamas Budavari

We compute the mass function of galactic dark matter halos for different values of the Warm Dark Matter (WDM) particle mass m_X and compare it with the abundance of ultra-faint galaxies derived from the deepest UV luminosity function…

Cosmology and Nongalactic Astrophysics · Physics 2016-02-17 N. Menci , N. G. Sanchez , M. Castellano , A. Grazian

Observations with the {\it James Webb Space Telescope} have revealed a high abundance of bright galaxies at redshift, $z\gtrsim 12$, which has been widely interpreted as conflicting with the $\Lambda$CDM model. In Cowley et al. (2018)…

Astrophysics of Galaxies · Physics 2024-11-27 Shengdong Lu , Carlos S. Frenk , Sownak Bose , Cedric G. Lacey , Shaun Cole , Carlton M. Baugh , John C. Helly

We present a simple formalism to interpret two galaxy statistics, the UV luminosity function and two-point correlation functions for star-forming galaxies at z~4, 5, 6 in the context of LCDM cosmology. Both statistics are the result of how…

The James Webb Space Telescope (JWST), scheduled for launch in 2014, is expected to revolutionize our understanding of the high-redshift Universe. Even so, many of the most interesting sources that may be hiding at redshifts z~10…

Cosmology and Nongalactic Astrophysics · Physics 2015-03-17 E. Zackrisson