Results 1 to 10 of about 4,675 (217)

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

open access: yesThe 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   +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

open access: yesThe 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   +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

open access: yesThe 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   +16 more
doaj   +1 more source

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

open access: yesThe 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   +41 more
doaj   +1 more source

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

open access: yesThe 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   +8 more
doaj   +1 more source

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

open access: yesThe 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   +27 more
doaj   +1 more source

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

open access: yesThe 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   +11 more
doaj   +1 more source

Searching for high-z DSFGs with NIKA2 and NOEMA [PDF]

open access: yesEPJ Web of Conferences, 2022
As the possible progenitors of passive galaxies at z=2-3, dusty starforming galaxies (DSFGs) at z>4 provide a unique perspective to study the formation, assembly, and early quenching of massive galaxies in the early Universe.
Bing L.   +47 more
doaj   +1 more source

Early Results from GLASS-JWST. XV. Properties of the Faintest Red Sources in the NIRCAM Deep Fields

open access: yesThe Astrophysical Journal Letters, 2023
We present a first look at the reddest 2–5 μ m sources found in deep images from the GLASS Early Release Science program. We undertake a general search, i.e., not looking for any particular spectral signatures, for sources detected only in
K. Glazebrook   +22 more
doaj   +1 more source

Structural and Morphological Properties of Ultraluminous Infrared Galaxies at 1 < z < 3

open access: yesOpen Astronomy, 2015
Using the Hubble Space Telescope (HST)/Wide Field Camera 3 (WFC3) near-infrared high-resolution imaging from the 3D-HST survey, we analyze the morphology and structure of 502 ultraluminous infrared galaxies (ULIRGs; LIR > 1012L⊙) at 1 < z < 3. Their rest-
Fang Guanwen   +3 more
doaj   +1 more source

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