Results 141 to 150 of about 108,043 (278)

Violent Starbursts and Quiescence Induced by Far-ultraviolet Radiation Feedback in Metal-poor Galaxies at High Redshift

open access: yesThe Astrophysical Journal
JWST observations of galaxies at z ≳ 8 suggest that they are more luminous and clumpier than predicted by most models, prompting several proposals on the physics of star formation and feedback in the first galaxies. In this paper, we focus on the role of
Kazuyuki Sugimura   +4 more
doaj   +1 more source

Emulating redshift mixing due to blending in weak gravitational lensing

open access: yesAstronomy & Astrophysics
Context. Galaxies whose images overlap in the focal plane of a telescope, commonly referred to as blends, are often located at different redshifts. Blending introduces a challenge to weak-lensing cosmology probes since such blends are subject to shear ...
Zhang Zekang   +4 more
doaj   +1 more source

On the Clustering of Lyα Clouds, High‐Redshift Galaxies, and Underlying Mass [PDF]

open access: bronze, 1998
Renyue Cen   +3 more
openalex   +1 more source

MAMMOTH-Subaru. III. Lyα Halo Identified by Stacking ∼3300 Lyα Emitters at z = 2.2–2.3

open access: yesThe Astrophysical Journal
In this paper, we present a Ly α halo (LAH) identified by stacking ∼3300 Ly α emitters (LAEs) at z = 2.2–2.3. We carry out imaging observations and data reduction with Subaru/Hyper Suprime-Cam.
Haibin Zhang   +10 more
doaj   +1 more source

High redshift X-ray galaxy clusters [PDF]

open access: bronze, 2007
M. Branchesi   +3 more
openalex   +1 more source

A Simple Model of the Radio–Infrared Correlation Depending on Gas Surface Density and Redshift

open access: yesThe Astrophysical Journal
We introduce a simple parametric model of the radio–infrared correlation (i.e., the ratio between the IR luminosity and the 1.4 GHz radio luminosity, q _IR ) by considering the energy loss rate of high-energy cosmic-ray (CR) electrons governed by ...
Ilsang Yoon
doaj   +1 more source

A Simple Direct Empirical Observation of Systematic Bias of the Redshift as a Distance Indicator

open access: yesUniverse
Recent puzzling observations, such as the H0 tension, large-scale anisotropies, and massive disk galaxies at high redshifts, have been challenging the standard cosmological model.
Lior Shamir
doaj   +1 more source

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