Results 61 to 70 of about 149 (117)

A quiescent galaxy in a gas-rich cosmic web node at z ∼ 3

Astronomy & Astrophysics
Recent JWST observations have unveiled a large number of quiescent galaxies at z ≳ 3, bringing potential challenges to current galaxy formation models.
Wang Weichen, Cantalupo Sebastiano, Galbiati Marta, Travascio Andrea, Pensabene Antonio, Steidel Charles C., Pezzulli Gabriele, Wang Bingjie, Wang Xiaohan, Dutta Rajeshwari, Lazeyras Titouan, Ledos Nicolas, Mao Huiyang, Quadri Giada   +13 more
doaj   +1 more source

Transformative science from the lunar farside: observations of the dark ages and exoplanetary systems at low radio frequencies. [PDF]

Philos Trans A Math Phys Eng Sci, 2021
Burns JO.
europepmc   +1 more source

Challenging the LyC–Lyα Relation: Strong Lyα Emitters without LyC Leakage at z ∼ 2.3

The Astrophysical Journal
The escape fraction of Lyman continuum (LyC) ionizing radiation ( ${f}_{{\rm{esc}}}^{{\rm{LyC}}}$ ) is crucial for understanding reionization, yet difficult to measure at z  ≳ 4. Recently, studies have focused on calibrating indirect indicators of ${f}_{{
Annalisa Citro, Claudia M. Scarlata, Kameswara B. Mantha, Liliya R. Williams, Marc Rafelski, Mitchell Revalski, Matthew J. Hayes, Alaina Henry, Michael J. Rutkowski, Harry I. Teplitz, Andrea Grazian, Anahita Alavi   +11 more
doaj   +1 more source

High-redshift star formation in the Atacama large millimetre/submillimetre array era. [PDF]

R Soc Open Sci, 2020
Hodge JA, da Cunha E.
europepmc   +1 more source

MUSEQuBES: Unveiling Cosmic Web Filaments at z ≈ 3.6 through Dual Absorption and Emission Line Analysis

The Astrophysical Journal Letters
According to modern cosmological models, galaxies are embedded within cosmic filaments, which supply a continuous flow of pristine gas, fueling star formation and driving their evolution. However, due to their low density, the direct detection of diffuse
Eshita Banerjee, Sowgat Muzahid, Joop Schaye, Sebastiano Cantalupo, Sean D. Johnson   +4 more
doaj   +1 more source

A Massive H i-absorption-selected Galaxy at z ≈ 2.356

The Astrophysical Journal Letters
We use the Karl G. Jansky Very Large Array (VLA) and the Atacama Large Millimeter/submillimeter Array to detect CO(1–0), CO(3–2), and rest-frame 349 GHz continuum emission from an H i -selected galaxy, DLA1020+2733g, at z  ≈ 2.3568 in the field of the z =
B. Kaur, N. Kanekar, M. Neeleman, Y. Zhu, J. X. Prochaska, M. Rafelski, G. Becker   +6 more
doaj   +1 more source

ODIN: Identifying Protoclusters and Cosmic Filaments Traced by Lyα-emitting Galaxies

The Astrophysical Journal
To understand the formation and evolution of massive cosmic structures, studying them at high redshift, in the epoch when they formed the majority of their mass, is essential.
Vandana Ramakrishnan, Kyoung-Soo Lee, Maria Celeste Artale, Eric Gawiser, Yujin Yang, Changbom Park, Yi-Kuan Chiang, Robin Ciardullo, Arjun Dey, Caryl Gronwall, Lucia Guaita, Ho Seong Hwang, Sang Hyeok Im, Woong-Seob Jeong, Seongjae Kim, Ankit Kumar, Jaehyun Lee, Seong-Kook Lee, Byeongha Moon, Nelson Padilla, Alexandra Pope, Roxana Popescu, Akriti Singh, Hyunmi Song, Paulina Troncoso, Francisco Valdes, Ann Zabludoff   +26 more
doaj   +1 more source

Lyα Emission Line Profiles of Extreme [O iii]- emitting Galaxies at z ≳ 2: Implications for Lyα Visibility in the Reionization Era

The Astrophysical Journal
JWST observations have recently begun delivering the first samples of Ly α velocity profile measurements at z > 6, opening a new window into the reionization process.
Mengtao Tang, Daniel P. Stark, Richard S. Ellis, Michael W. Topping, Charlotte Mason, Zhihui Li, Adèle Plat   +6 more
doaj   +1 more source

ODIN: Clustering Analysis of 14,000 Lyα-emitting Galaxies at z = 2.4, 3.1, and 4.5

The Astrophysical Journal Letters
Ly α emitters (LAEs) are star-forming galaxies that efficiently probe the spatial distribution of galaxies in the high-redshift Universe. The spatial clustering of LAEs reflects the properties of their individual host dark matter halos, allowing us to ...
Danisbel Herrera, Eric Gawiser, Barbara Benda, Nicole M. Firestone, Vandana Ramakrishnan, Byeongha Moon, Kyoung-Soo Lee, Changbom Park, Francisco Valdes, Yujin Yang, María Celeste Artale, Robin Ciardullo, Caryl Gronwall, Lucia Guaita, Ho Seong Hwang, Jacob Kennedy, Ankit Kumar, Ann Zabludoff   +17 more
doaj   +1 more source

Lyα Profile Shape as an Escape-fraction Diagnostic at High Redshift

The Astrophysical Journal
While the shape of the Ly α profile is viewed as one of the best tracers of ionizing-photon escape fraction ( f _esc ) within low-redshift ( z ∼ 0.3) surveys of the Lyman continuum, this connection remains untested at high redshift. Here, we combine deep,
Anthony Pahl, Alice Shapley, Charles C. Steidel, Naveen A. Reddy, Yuguang Chen, Gwen C. Rudie   +5 more
doaj   +1 more source