Results 81 to 90 of about 228,395 (174)
The Astrophysical Journal Letters, 2023 The JWST observations of high-redshift galaxies are used to measure their star formation histories—the buildup of stellar mass in the earliest galaxies.
Alan Dressler +22 more
doaj +1 more source
Inkjet Printed Photonic Cellulose Nanocrystal Patterns
Advanced Materials, Volume 36, Issue 1, January 4, 2024.Patterned arrays of photonic cellulose nanocrystal microfilms are prepared by inkjet printing. By dispensing directly through an oil layer, the printing and drying processes can be decoupled, which avoids the coffee stain effect and enables complex arrays to be produced.
Cyan A. Williams +4 more
wiley +1 more source
A Steep Decline in the Galaxy Space Density beyond Redshift 9 in the CANUCS UV Luminosity Function
The Astrophysical JournalWe present a new sample of 158 galaxies at redshift z > 7.5 selected from deep James Webb Space Telescope (JWST) NIRCam imaging of five widely separated sight lines in the CANUCS survey.
Chris J. Willott +17 more
doaj +1 more source
The Evolution of the Mass-Metallicity Relation at 0.20 < z < 0.35 [PDF]
Journal of Astronomy and Space Sciences, 2013 We present a spectroscopic study of 343 blue compact galaxies (BCGs) at 0.20 < z < 0.35 from the Sloan Digital Sky Survey (SDSS) DR7 data. We derive gas phase oxygen abundance using the empirical and direct method.
Jiwon Chung +2 more
doaj +1 more source
Creation Field Cosmological Model with Variable Cosmological Term (Λ) in Bianchi Type III Space‐Time
Advances in High Energy Physics, Volume 2024, Issue 1, 2024.The paper is devoted to the study of cosmological models with time‐varying cosmological term (Λ) in the presence of creation field in the framework of Bianchi type III space‐time. To obtain deterministic model of the universe, we have assumed Λ ∝ 1/R3, where R is the scale factor, for steady state cosmology and creation field, and shear (σ) is ...
Raj Bali, Seema Saraf, Donato Nicolo
wiley +1 more source
, 2015 We study relations between global characteristics of low-redshift (0 < z < 1) compact star-forming galaxies, including absolute optical magnitudes, Hbeta emission-line luminosities (or equivalently star-formation rates), stellar masses, and oxygen ...
Fricke, K. J. +3 more
core +2 more sources
Galaxy Properties in Clusters: Dependence on the Environment and the Cluster Identification Techniques [PDF]
, 2009 We investigate the dependence of several galaxy properties on the environment and cluster identification techniques. We select clusters of galaxies from two catalogues based on the SDSS: the ROSAT-SDSS Galaxy Cluster Survey, and the MaxBCG Catalogue. Based on a volume limited sample of galaxies drawn from the spectroscopic DR5 SDSS, we constructed sub ...
arxiv +1 more source
Environmentally Driven Global Evolution of Galaxies
, 2011 Utilizing high-resolution large-scale galaxy formation simulations of the standard cold dark matter model, we examine global trends in the evolution of galaxies due to gravitational shock heating by collapse of large halos and large-scale structure.
Baldry +39 more
core +1 more source
Big Three Dragons: Molecular Gas in a Bright Lyman-break Galaxy at z = 7.15
The Astrophysical Journal, 2023 We report Atacama Large Millimeter/submillimeter Array Band 3 observations of CO(6−5), CO(7−6), and [C i ](2−1) in B14-65666 (“Big Three Dragons”), one of the brightest Lyman-break galaxies at z > 7 in the rest-frame ultraviolet continuum, far-infrared ...
Takuya Hashimoto +13 more
doaj +1 more source
The Fastest Galaxy Evolution in an Unbiased Compact Group Sample with WISE [PDF]
, 2017 We study the mid-infrared (MIR) properties of galaxies in compact groups and their environmental dependence using the \textit{Wide-field Infrared Survey Explorer (WISE)} data. We use a volume-limited sample of 670 compact groups and their 2175 member galaxies with $M_r< -19.77$ and $0.01
arxiv +1 more source