Results 81 to 90 of about 234,940 (272)

It takes a supercluster to raise a galaxy [PDF]

arXiv, 2014
The properties of galaxies depend on their environment: red, passive elliptical galaxies are usually located in denser environments than blue, star-forming spiral galaxies. This difference in galaxy populations can be detected at all scales from groups of galaxies to superclusters.
arxiv  

Tools for Learning—Promoting Reflection for Student Teachers' Development of PCK

Journal of Research in Science Teaching, EarlyView.
ABSTRACT This paper investigates how the coherent integration of three different tools for reflection during a science methods course can contribute to student teachers' planning and enactment of science teaching, that is, their development of pedagogical content knowledge (PCK).
Pernilla Nilsson, Anne‐Marie Cederqvist   +1 more
wiley   +1 more source

A Massive Quiescent Galaxy in a Group Environment at z = 4.53

The Astrophysical Journal
We report on the spectroscopic confirmation of a massive quiescent galaxy at z _spec = 4.53 in the COSMOS field. The object was first identified as a galaxy with suppressed star formation at z _phot ∼ 4.65 from the COSMOS2020 catalog.
Takumi Kakimoto, Masayuki Tanaka, Masato Onodera, Rhythm Shimakawa, Po-Feng Wu, Katriona M. L. Gould, Kei Ito, Shuowen Jin, Mariko Kubo, Tomoko L. Suzuki, Sune Toft, Francesco Valentino, Kiyoto Yabe   +12 more
doaj   +1 more source

The Close Environment of Seyfert Galaxies and Its Implication for Unification Models [PDF]

, 1999
D. Dultzin‐Hacyan, Y. Krongold, I. Fuentes-Guridi, P. Marziani   +3 more
openalex   +1 more source

The Effect of Seductive Details on Knowledge Retention in Physics Videos: A Mixed Methods Study

Journal of Research in Science Teaching, EarlyView.
ABSTRACT Research reports that interesting but irrelevant information, seductive details, in teaching material can impede learning. In science education, the inclusion of historical narratives in lessons to promote interest has been recommended but may hinder learning.
Richard Brock, Liam Cini O'Dwyer, Ben Rogers   +2 more
wiley   +1 more source

To High Redshift and Low Mass: Exploring the Emergence of Quenched Galaxies and Their Environments at 3 < z < 6 in the Ultra-deep JADES MIRI F770W Parallel

The Astrophysical Journal
We present the robust selection of high-redshift quiescent galaxies (QG) and poststarburst (PSB) galaxies using ultra-deep NIRCam and MIRI imaging from the JWST Advanced Deep Extragalactic Survey (JADES).
Stacey Alberts, Christina C. Williams, Jakob M. Helton, Katherine A. Suess, Zhiyuan Ji, Irene Shivaei, Jianwei Lyu, George Rieke, William M. Baker, Nina Bonaventura, Andrew J. Bunker, Stefano Carniani, Stephane Charlot, Emma Curtis-Lake, Francesco D’Eugenio, Daniel J. Eisenstein, Anna de Graaff, Kevin N. Hainline, Ryan Hausen, Benjamin D. Johnson, Roberto Maiolino, Eleonora Parlanti, Marcia J. Rieke, Brant E. Robertson, Yang Sun, Sandro Tacchella, Christopher N. A. Willmer, Chris J. Willott   +27 more
doaj   +1 more source

Machine learning approach of multi‐RAT selection for travelling users in 5G NSA networks

IET Networks, EarlyView.
The authors present RAT selection algorithm for efficient resource allocation for public bus travelling user(s), utilising live data from multiple 5G NSA base stations. Models of the supervised machine learning algorithms: SVM, DNN and XGBoost were deployed for implementation to predict or select the appropriate RAT between 4G and 5G RATs.
Nurudeen O. Salau, Sanaullah Manzoor, Muhammad Z. Shakir   +2 more
wiley   +1 more source

Large-scale Structures in COSMOS2020: Evolution of Star Formation Activity in Different Environments at 0.4 < z < 4

The Astrophysical Journal
To study the role of environment in galaxy evolution, we reconstruct the underlying density field of galaxies based on COSMOS2020 (The Farmer catalog) and provide the density catalog for a magnitude-limited ( K _s < 24.5) sample of ∼210,000 galaxies at 0.
Sina Taamoli, Bahram Mobasher, Nima Chartab, Behnam Darvish, John R. Weaver, Shoubaneh Hemmati, Caitlin M. Casey, Zahra Sattari, Gabriel Brammer, Peter L. Capak, Olivier Ilbert, Jeyhan S. Kartaltepe, Henry J. McCracken, Andrea Moneti, David B. Sanders, Nicholas Scoville, Charles L. Steinhardt, Sune Toft   +17 more
doaj   +1 more source

Radio-quiet QSO environments — I. The correlation of QSOs and bJ < 23 galaxies [PDF]

, 1999
S. M. Croom, T. Shanks
openalex   +1 more source

Star Formation and Dust in the Cosmic Web

The Astrophysical Journal
The large-scale environment of the cosmic web is believed to impact galaxy evolution, but there is still no consensus regarding the mechanisms. We use a semi-analytic model (SAM) galaxy catalog to study the star formation and dust content of local ...
Massimiliano Parente, Cinthia Ragone-Figueroa, Pablo López, Héctor J. Martínez, Andrés N. Ruiz, Laura Ceccarelli, Valeria Coenda, Facundo Rodriguez, Gian Luigi Granato, Andrea Lapi, Rien van de Weygaert   +10 more
doaj   +1 more source