Results 61 to 70 of about 108,440 (263)

Galaxies at High Redshifts

, 1998
To appear in "Large Scale Structure: Tracks and Traces", Proceedings of the 12th Potsdam Cosmology Workshop, eds. V. M"uller, S. Gottl"ober, J. P. M"ucket, J. Wambsganss, (Singapore: World Scientific), 1998. 9 LaTeX pages, including 5 figures.
Yahil, A., Lanzetta, K. M., Fernandez-Soto, A.   +2 more
openaire   +2 more sources

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

Journal of Research in Science Teaching, Volume 62, Issue 8, Page 1923-1940, October 2025.
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

THE CANADA-FRANCE REDSHIFT SURVEY V: Global Properties of the Sample

, 1995
The photometric and spectroscopic data of the CFRS survey of objects with 17.5 < I_{AB} < 22.5 are combined and analysed. The overall completeness is 85%. The redshift histogram of the sample is presented for 591 field galaxies with secure redshifts. The
Crampton, David, Fevre, O. Le, Hammer, F., Lilly, S. J.   +3 more
core   +1 more source

UV–Vis Spectra of Carbonic Acid: Rationalizing Experimental Redshifts between Monomer and Bulk based on (H2CO3)n Calculations

ChemPhysChem, Volume 26, Issue 18, September 19, 2025.
In bulk carbonic acid (e.g., in interstellar icy dust grains) cluster formation produces two distinct UV‐Vis spectral features redshifted by ≈2 eV (25 nm) and by ≈5 eV (80 nm) compared to gas phase single molecule carbonic acid 's adiabatic ionization energy. Theory and experiment were used to investigate the origin of these shifts.
Dennis F. Dinu, Bastian Klein, Chaojiang Zhang, Radu A. Talmazan, Thomas Loerting, Hinrich Grothe, Ralf I. Kaiser, Maren Podewitz   +7 more
wiley   +1 more source

First Detection of CO Isotopologues in a High-redshift Main-sequence Galaxy: Evidence of a Top-heavy Stellar Initial Mass Function

The Astrophysical Journal
Recent observations and theories have presented a strong challenge to the universality of the stellar initial mass function (IMF) in extreme environments. A notable example has been found for starburst conditions, where evidence favors a top-heavy IMF, i.
Ziyi Guo, Zhi-Yu Zhang, Zhiqiang Yan, Eda Gjergo, Allison W. S. Man, R. J. Ivison, Xiaoting Fu, Yong Shi   +7 more
doaj   +1 more source

CEERS Key Paper. III. The Diversity of Galaxy Structure and Morphology at z = 3–9 with JWST

The Astrophysical Journal Letters, 2023
We present a comprehensive analysis of the evolution of the morphological and structural properties of a large sample of galaxies at z = 3–9 using early James Webb Space Telescope (JWST) CEERS NIRCam observations. Our sample consists of 850 galaxies at z
Jeyhan S. Kartaltepe, Caitlin Rose, Brittany N. Vanderhoof, Elizabeth J. McGrath, Luca Costantin, Isabella G. Cox, L. Y. Aaron Yung, Dale D. Kocevski, Stijn Wuyts, Henry C. Ferguson, Micaela B. Bagley, Steven L. Finkelstein, Ricardo O. Amorín, Brett H. Andrews, Pablo Arrabal Haro, Bren E. Backhaus, Peter Behroozi, Laura Bisigello, Antonello Calabrò, Caitlin M. Casey, Rosemary T. Coogan, M. C. Cooper, Darren Croton, Alexander de la Vega, Mark Dickinson, Adriano Fontana, Maximilien Franco, Andrea Grazian, Norman A. Grogin, Nimish P. Hathi, Benne W. Holwerda, Marc Huertas-Company, Kartheik G. Iyer, Shardha Jogee, Intae Jung, Lisa J. Kewley, Allison Kirkpatrick, Anton M. Koekemoer, James Liu, Jennifer M. Lotz, Ray A. Lucas, Jeffrey A. Newman, Camilla Pacifici, Viraj Pandya, Casey Papovich, Laura Pentericci, Pablo G. Pérez-González, Jayse Petersen, Nor Pirzkal, Marc Rafelski, Swara Ravindranath, Raymond C. Simons, Gregory F. Snyder, Rachel S. Somerville, Elizabeth R. Stanway, Amber N. Straughn, Sandro Tacchella, Jonathan R. Trump, Jesús Vega-Ferrero, Stephen M. Wilkins, Guang Yang, Jorge A. Zavala   +61 more
doaj   +1 more source

Millimetre/submillimetre-wave emission line searches for high-redshift galaxies [PDF]

, 2000
The redshifted spectral line radiation emitted from both atomic fine-structure and molecular rotational transitions in the interstellar medium (ISM) of high-redshift galaxies can be detected in the centimetre, millimetre and submillimetre wavebands. Here
Blain, Andrew W., Bock, J. J., Frayer, D. T., Scoville, N. Z.   +3 more
core   +2 more sources

Two Micron‐Size Dark Dimensions

Fortschritte der Physik, Volume 73, Issue 8, August 2025.
Abstract Two extra dimensions of micron scale might simultaneously address the gauge and cosmological hierarchy problems. In this paper various observational bounds in scenarios with one and two large extra dimensions are examined, to see if they are compatible with the micron scale.
Luis A. Anchordoqui, Ignatios Antoniadis, Dieter Lüst   +2 more
wiley   +1 more source

Galaxies Going Bananas: Inferring the 3D Geometry of High-Redshift Galaxies with JWST-CEERS [PDF]

, 2023
Viraj Pandya, Haowen Zhang, Marc Huertas-Company, Kartheik G. Iyer, Elizabeth J. McGrath, Guillermo Barro, Steven L. Finkelstein, M. Kuemmel, William G. Hartley, Henry C. Ferguson, Jeyhan S. Kartaltepe, Joel R. Primack, Avishai Dekel, S. M. Faber, David C. Koo, Greg L. Bryan, Rachel S. Somerville, R. Amorín, Pablo Arrabal Haro, Micaela B. Bagley, Eric F. Bell, E. Bertin, Luca Costantin, Romeel Davé, Mark Dickinson, Robert Feldmann, A. Fontana, R. Gavazzi, Mauro Giavalisco, A. Grazian, Norman A. Grogin, Yuchen Guo, ChangHoon Hahn, Benne W. Holwerda, Lisa J. Kewley, Allison Kirkpatrick, Anton M. Koekemoer, Jennifer M. Lotz, Ray A. Lucas, L. Pentericci, Pablo G. Pérez‐González, Nor Pirzkal, Dale D. Kocevski, Casey Papovich, Swara Ravindranath, Caitlin Rose, Marc Schefer, Raymond C. Simons, Amber N. Straughn, Sandro Tacchella, Jonathan R. Trump, Alexander de la Vega, Stephen M. Wilkins, Stijn Wuyts, Guang Yang, L. Y. Aaron Yung   +55 more
openalex   +1 more source

Redshift‐Agnostic Machine Learning Classification: Unveiling Peak Performance in Galaxy, Star, and Quasar Classification (Using SDSS DR17)

Astronomische Nachrichten, Volume 346, Issue 5, June 2025.
ABSTRACT Classification of galaxies, stars, and quasars using spectral data is fundamental to astronomy, but often relies heavily on redshift. This study evaluates the performance of 10 machine learning algorithms on SDSS data to classify these objects, with a particular focus on scenarios where redshift information is unavailable.
Debashis Chatterjee, Prithwish Ghosh
wiley   +1 more source