Results 111 to 120 of about 62,204 (222)

Massive Quiescent Disk Galaxies at 0.5 ≤ z ≤ 1 in CANDELS: Color Gradients and Likely Origin

open access: yesThe Astrophysical Journal
A rare population of massive disk-dominated quiescent galaxies has recently drawn much attention, which intrudes the red sequence (RS) population without destroying the underlying stellar disks.
Qifan Cui, Pinsong Zhao, F. S. Liu
doaj   +1 more source

Probabilistic Forward Modeling of Galaxy Catalogs with Normalizing Flows

open access: yesThe Astronomical Journal
Evaluating the accuracy and calibration of the redshift posteriors produced by photometric redshift (photo- z ) estimators is vital for enabling precision cosmology and extragalactic astrophysics with modern wide-field photometric surveys.
John Franklin Crenshaw   +7 more
doaj   +1 more source

The JWST Advanced Deep Extragalactic Survey: Discovery of an Extreme Galaxy Overdensity at z = 5.4 with JWST/NIRCam in GOODS-S

open access: yesThe Astrophysical Journal
We report the discovery of an extreme galaxy overdensity at z = 5.4 in the GOODS-S field using James Webb Space Telescope (JWST)/NIRCam imaging from JADES and JEMS alongside JWST/NIRCam wide-field slitless spectroscopy from FRESCO.
Jakob M. Helton   +30 more
doaj   +1 more source

IllustrisTNG in the HSC-SSP: No Shortage of Thin Disk Galaxies in TNG50

open access: yesThe Astrophysical Journal
We perform a thorough analysis of the projected shapes of nearby galaxies in both observations and cosmological simulations. We implement a forward-modeling approach to overcome the limitations in previous studies, which hinder accurate comparisons ...
Dewang Xu   +4 more
doaj   +1 more source

86th Annual Meeting of the Meteoritical Society (2024)

open access: yes
Meteoritics &Planetary Science, Volume 59, Issue S1, Page A1-A468, August 2024.
wiley   +1 more source

Data-space Validation of High-dimensional Models by Comparing Sample Quantiles

open access: yesThe Astrophysical Journal Supplement Series
We present a simple method for assessing the predictive performance of high-dimensional models directly in data space when only samples are available.
Stephen Thorp   +5 more
doaj   +1 more source

On the Stellar Disk Vertical Scale Height of Edge-on Galaxies from S4G

open access: yesThe Astrophysical Journal
Disk galaxies viewed as thin planar structures resulting from the conservation of angular momentum of an initially rotating pregalactic cloud allow merely a first-order model of galaxy formation, but the presence of vertically extended structures has ...
Notahiana Ranaivoharimina   +4 more
doaj   +1 more source

Star Formation at the Epoch of Reionization with CANUCS: The Ages of Stellar Populations in MACS1149-JD1

open access: yesThe Astrophysical Journal Letters
We present measurements of stellar populations properties of a z = 9.1 gravitationally lensed galaxy MACS1149-JD1 using deep James Webb Space Telescope NIRISS slitless spectroscopy as well as NIRISS and NIRCam imaging from the CAnadian NIRISS Unbiased ...
Maruša Bradač   +17 more
doaj   +1 more source

A Study of the Merging Dwarf Galaxy VCC322

open access: yesThe Astrophysical Journal
Galaxy interactions and mergers can enhance or reduce star formation, but a complete understanding of the involved processes is still lacking. The effect of dwarf galaxy mergers is even less clear than their massive counterpart.
Lan-Yue Zhang   +2 more
doaj   +1 more source

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