Results 1 to 10 of about 106,414 (223)

Simulating high-redshift galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2011
Recent observations have gathered a considerable sample of high redshift galaxy candidates and determined the evolution of their luminosity function (LF). To interpret these findings, we use cosmological SPH simulations including, in addition to standard
Ruben Salvaterra, Andrea Ferrara
exaly   +4 more sources

Measuring dynamical masses from gas kinematics in simulated high-redshift galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2020
Advances in instrumentation have recently extended detailed measurements of gas kinematics to large samples of high-redshift galaxies. Relative to most nearby, thin disc galaxies, in which gas rotation accurately traces the gravitational potential, the ...
Sarah Wellons, Claude-André Faucher-Giguère, Daniel Anglés-Alcázar   +2 more
exaly   +4 more sources

Simulations of High-redshift [O iii] Emitters: Chemical Evolution and Multiline Diagnostics

The Astrophysical Journal, 2023
Recent observations by the James Webb Space Telescope discovered a number of high-redshift galaxies with strong emission lines from doubly ionized oxygen.
Yurina Nakazato, Naoki Yoshida, Daniel Ceverino   +2 more
doaj   +1 more source

The GLASS-JWST Early Release Science Program. II. Stage I Release of NIRCam Imaging and Catalogs in the Abell 2744 Region

The Astrophysical Journal, 2023
We present images and a multiwavelength photometric catalog based on all of the JWST NIRCam observations obtained to date in the region of the Abell 2744 galaxy cluster.
Diego Paris, Emiliano Merlin, Adriano Fontana, Andrea Bonchi, Gabriel Brammer, Matteo Correnti, Tommaso Treu, Kristan Boyett, Antonello Calabrò, Marco Castellano, Wenlei Chen, Lilan Yang, Karl Glazebrook, Patrick Kelly, Anton M. Koekemoer, Nicha Leethochawalit, Sara Mascia, Charlotte Mason, Takahiro Morishita, Mario Nonino, Laura Pentericci, Gianluca Polenta, Guido Roberts-Borsani, Paola Santini, Michele Trenti, Eros Vanzella, Benedetta Vulcani, Rogier A. Windhorst, Themiya Nanayakkara, Xin Wang   +29 more
doaj   +1 more source

A Large-scale Kinematic Study of Molecular Gas in High-z Cluster Galaxies: Evidence for High Levels of Kinematic Asymmetry

The Astrophysical Journal, 2023
We investigate the resolved kinematics of the molecular gas, as traced by the Atacama Large Millimeter/submillimeter Array in CO (2−1), of 25 cluster member galaxies across three different clusters at a redshift of z ∼ 1.6.
W. J. Cramer, A. G. Noble, K. Massingill, J. Cairns, D. L. Clements, M. C. Cooper, R. Demarco, J. Matharu, M. McDonald, A. Muzzin, J. Nantais, G. Rudnick, H. Übler, E. van Kampen, T. M. A. Webb, G. Wilson, H. K. C. Yee   +16 more
doaj   +1 more source

Target Selection and Sample Characterization for the DESI LOW-Z Secondary Target Program

The Astrophysical Journal, 2023
We introduce the DESI LOW- Z Secondary Target Survey, which combines the wide-area capabilities of the Dark Energy Spectroscopic Instrument (DESI) with an efficient, low-redshift target selection method.
Elise Darragh-Ford, John F. Wu, Yao-Yuan Mao, Risa H. Wechsler, Marla Geha, Jaime E. Forero-Romero, ChangHoon Hahn, Nitya Kallivayalil, John Moustakas, Ethan O. Nadler, Marta Nowotka, J. E. G. Peek, Erik J. Tollerud, Benjamin Weiner, J. Aguilar, S. Ahlen, D. Brooks, A. P. Cooper, A. de la Macorra, A. Dey, K. Fanning, A. Font-Ribera, S. Gontcho A Gontcho, K. Honscheid, T. Kisner, Anthony Kremin, M. Landriau, Michael E. Levi, P. Martini, Aaron M. Meisner, R. Miquel, Adam D. Myers, Jundan Nie, N. Palanque-Delabrouille, W. J. Percival, F. Prada, D. Schlegel, M. Schubnell, Gregory Tarlé, M. Vargas-Magaña, Zhimin Zhou, H. Zou   +41 more
doaj   +1 more source

Fraction of Clumpy Star-forming Galaxies at 0.5 ≤ z ≤ 3 in UVCANDELS: Dependence on Stellar Mass and Environment

The Astrophysical Journal, 2023
High-resolution imaging of galaxies in rest-frame UV has revealed the existence of giant star-forming clumps prevalent in high-redshift galaxies. Studying these substructures provides important information about their formation and evolution and informs ...
Zahra Sattari, Bahram Mobasher, Nima Chartab, Daniel D. Kelson, Harry I. Teplitz, Marc Rafelski, Norman A. Grogin, Anton M. Koekemoer, Xin Wang, Rogier A. Windhorst, Anahita Alavi, Laura Prichard, Ben Sunnquist, Jonathan P. Gardner, Eric Gawiser, Nimish P. Hathi, Matthew J. Hayes, Zhiyuan Ji, Vihang Mehta, Brant E. Robertson, Claudia Scarlata, L. Y. Aaron Yung, Christopher J. Conselice, Y. Sophia Dai, Yicheng Guo, Ray A. Lucas, Alec Martin, Swara Ravindranath   +27 more
doaj   +1 more source

The Puzzling Properties of the MACS1149-JD1 Galaxy at z = 9.11

The Astrophysical Journal Letters, 2023
We analyze new JWST NIRCam and NIRSpec data on the redshift 9.11 galaxy MACS1149-JD1 (hereafter JD1). Our NIRCam imaging data reveal that JD1 comprises three spatially distinct components. Our spectroscopic data indicate that JD1 appears dust free but is
Massimo Stiavelli, Takahiro Morishita, Marco Chiaberge, Claudio Grillo, Nicha Leethochawalit, Piero Rosati, Stefan Schuldt, Michele Trenti, Tommaso Treu   +8 more
doaj   +1 more source

Accurately predicting the escape fraction of ionizing photons using restframe ultraviolet absorption lines [PDF]

, 2018
The fraction of ionizing photons that escape high-redshift galaxies sensitively determines whether galaxies reionized the early universe. However, this escape fraction cannot be measured from high-redshift galaxies because the opacity of the ...
Bayliss, M., Chisholm, J., Dahle, H., Gazagnes, S., Gladders, M., Rigby, J. R., Schaerer, D., Sharon, K., Verhamme, A.   +8 more
core   +4 more sources

Spectral Templates Optimal for Selecting Galaxies at z > 8 with the JWST

The Astrophysical Journal, 2023
The selection of high-redshift galaxies often involves spectral energy distribution (SED) fitting to photometric data, an expectation for contamination levels, and measurement of sample completeness—all vetted through comparison to spectroscopic redshift
Rebecca L. Larson, Taylor A. Hutchison, Micaela Bagley, Steven L. Finkelstein, L. Y. Aaron Yung, Rachel S. Somerville, Michaela Hirschmann, Gabriel Brammer, Benne W. Holwerda, Casey Papovich, Alexa M. Morales, Stephen M. Wilkins   +11 more
doaj   +1 more source