Results 91 to 100 of about 14,388 (158)

Probing the IGM-galaxy connection at z<0.5 II. New insights into the galaxy environments of OVI absorbers in PKS 0405-123

, 2013
We present new absorption-line analysis and new galaxy survey data obtained for the field around PKS0405-123 at z=0.57. Combining previously known OVI absorbers with new identifications in the higher S/N UV spectra obtained with COS, we have established ...
Chen, Hsiao-Wen, Johnson, Sean D., Mulchaey, John S.   +2 more
core   +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

Ancient giants: on the farthest galaxy at z=8.6

, 2011
The observational frontiers for the detection of high-redshift galaxies have recently been pushed to unimaginable distances with the record-holding Lyman Alpha Emitter (LAE) UDFy-38135539 discovered at redshift z=8.6. However, the physical nature and the
Andrea Ferrara, Bianchi, Bouwens, Dayal, Dayal, Dayal, Dayal, Dijkstra, Dijkstra, Fangano, Finkelstein, Finkelstein, Giavalisco, Gnedin, Hansen, Kashikawa, Komatsu, Lehnert, Leitherer, Madau, Malhotra, McKee, Neufeld, Nozawa, Pratika Dayal, Salvaterra, Santos, Saro, Seab, Shimasaku, Springel, Steidel, Tanvir, Todini, Tornatore, Vanzella, Verhamme   +36 more
core   +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

Connecting Faint End Slopes of the Lyman-$\alpha$ emitter and Lyman-break Galaxy Luminosity Functions

, 2015
We predict Lyman-$\alpha$ (Ly$\alpha$) luminosity functions (LFs) of Ly$\alpha$-selected galaxies (Ly$\alpha$ emitters, or LAEs) at $z=3-6$ using the phenomenological model of Dijkstra & Wyithe (2012).
Dijkstra, Mark, Gronke, Max, Trenti, Michele, Wyithe, Stuart   +3 more
core   +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

Effect of Lyα Radiative Transfer on Intensity Mapping Power Spectra

The Astrophysical Journal
Clustering of Ly α -emitting galaxies (LAEs) and Ly α line intensity mapping (LIM) are useful probes of cosmology. However, Ly α radiative transfer (RT) effects, such as absorption, line shift, and line broadening, and their dependence on the large-scale
Maja Lujan Niemeyer
doaj   +1 more source