Results 31 to 40 of about 103,703 (233)

ON THE [C ii]–SFR RELATION IN HIGH REDSHIFT GALAXIES [PDF]

open access: bronze, 2015
After two Atacama Large Millimeter/submillimeter Array (ALMA) observing cycles, only a handful of [C ii] 158 μm emission line searches in z > 6 galaxies have reported a positive detection, questioning the applicability of the local [C ii]–star formation ...
L. Vallini   +6 more
openalex   +3 more sources

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

open access: yesMonthly notices of the Royal Astronomical Society, 2019
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
S. Wellons   +6 more
semanticscholar   +1 more source

Are High-redshift Galaxies Hot? Temperature of z > 5 Galaxies and Implications for Their Dust Properties [PDF]

open access: yes, 2017
Recent studies have found a significant evolution and scatter in the relationship between the UV spectral slope (βUV) and the infrared excess (IRX; LIR/LUV) at z > 4, suggesting different dust properties of these galaxies.
A. Faisst   +8 more
semanticscholar   +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

Globular clusters as the relics of regular star formation in ‘normal’ high-redshift galaxies [PDF]

open access: yes, 2015
We present an end-to-end, two-phase model for the origin of globular clusters (GCs). In the model, populations of stellar clusters form in the high-pressure discs of high-redshift ($z>2$) galaxies (a rapid-disruption phase due to tidal perturbations from
J. Kruijssen
semanticscholar   +1 more source

Early Results from GLASS-JWST. IX. First Spectroscopic Confirmation of Low-mass Quiescent Galaxies at z > 2 with NIRISS

open access: yesThe Astrophysical Journal Letters, 2023
How passive galaxies form, and the physical mechanisms which prevent star formation over long timescales, are some of the most outstanding questions in understanding galaxy evolution.
Danilo Marchesini   +22 more
doaj   +1 more source

THE ALMA SPECTROSCOPIC SURVEY IN THE HUBBLE ULTRA DEEP FIELD: MOLECULAR GAS RESERVOIRS IN HIGH-REDSHIFT GALAXIES [PDF]

open access: yes, 2016
We study the molecular gas properties of high-z galaxies observed in the ALMA Spectroscopic Survey (ASPECS) that targets an ∼1 arcmin2 region in the Hubble Ultra Deep Field (UDF), a blind survey of CO emission (tracing molecular gas) in the 3 and 1 mm ...
R. Decarli   +31 more
semanticscholar   +1 more source

The MUSE Hubble Ultra Deep Field Survey: II. Spectroscopic redshifts and comparisons to color selections of high-redshift galaxies [PDF]

open access: yes, 2017
We have conducted a two-layered spectroscopic survey (1′ × 1′ ultra deep and 3′ × 3′ deep regions) in the Hubble Ultra Deep Field (HUDF) with the Multi Unit Spectroscopic Explorer (MUSE).
H. Inami   +30 more
semanticscholar   +1 more source

The problematic growth of dust in high-redshift galaxies [PDF]

open access: yes, 2016
Dust growth via accretion of gas species has been proposed as the dominant process to increase the amount of dust in galaxies. We show here that this hypothesis encounters severe difficulties that make it unfit to explain the observed UV and IR ...
A. Ferrara, S. Viti, C. Ceccarelli
semanticscholar   +1 more source

Spatial Extent of Molecular Gas, Dust, and Stars in Massive Galaxies at z ∼ 2.2–2.5 Determined with ALMA and JWST

open access: yesThe Astrophysical Journal Letters, 2023
We present the results of 0.″6-resolution observations of CO J = 3 − 2 line emission in 10 massive star-forming galaxies at z ∼ 2.2–2.5 with the Atacama Large Millimeter/submillimeter Array (ALMA).
Ken-ichi Tadaki   +5 more
doaj   +1 more source

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