Results 91 to 100 of about 8,408 (187)

The Web Epoch of Reionization Lyα Survey (WERLS). I. MOSFIRE Spectroscopy of z ∼ 7–8 Lyα Emitters

The Astrophysical Journal
We present the first results from the Web Epoch of Reionization Ly α Survey (WERLS), a spectroscopic survey of Ly α emission using Keck I/MOSFIRE and LRIS.
Olivia R. Cooper, Caitlin M. Casey, Hollis B. Akins, Jake Magee, Alfonso Melendez, Mia Fong, Stephanie M. Urbano Stawinski, Jeyhan S. Kartaltepe, Steven L. Finkelstein, Rebecca L. Larson, Intae Jung, Ash Bista, Jaclyn B. Champagne, Óscar A. Chávez Ortiz, Sadie Coffin, M. C. Cooper, Nicole Drakos, Andreas L. Faisst, Maximilien Franco, Seiji Fujimoto, Steven Gillman, Ghassem Gozaliasl, Santosh Harish, Taylor A. Hutchison, Anton M. Koekemoer, Vasily Kokorev, Jitrapon Lertprasertpong, Daizhong Liu, Arianna S. Long, Casey Papovich, R. Michael Rich, Brant E. Robertson, Margherita Talia, Brittany N. Vanderhoof, John R. Weaver, Katherine E. Whitaker, Jorge A. Zavala   +36 more
doaj   +1 more source

Damped Lyman α systems in galaxy formation simulations [PDF]

Monthly Notices of the Royal Astronomical Society, 2008
We investigate the population of z=3 damped Lyman alpha absorbers (DLAs) in a recent series of high resolution galaxy formation simulations. The simulations are of interest because they form at z=0 some of the most realistic disk galaxies to date. No free parameters are available in our study: these have been fixed by physical and z=0 observational ...
Pontzen, A, Governato, F, Pettini, M, Booth, C, Stinson, G, Wadsley, J, Brooks, A, Quinn, T, Haehnelt, M   +8 more
openaire   +2 more sources

The clustering of Lyman Alpha Emitting galaxies at [PDF]

Journal of Cosmology and Astroparticle Physics
We measure the clustering of Lyman Alpha Emitting galaxies (LAEs) selected from the One-hundred-square-degree DECam Imaging in Narrowbands (ODIN) survey, with spectroscopic follow-up from Dark Energy Spectroscopic Instrument (DESI). We use DESI spectroscopy to optimize our selection and to constrain the interloper fraction and redshift distribution of ...
White, Martin, Raichoor, A, Dey, Arjun, Garrison, Lehman H, Gawiser, Eric, Lang, D, Lee, Kyoung-soo, Myers, AD, Schlegel, D, Valdes, F, Aguilar, J, Ahlen, S, Brooks, D, Chaussidon, E, Claybaugh, T, Dawson, K, de la Macorra, A, Dey, Biprateep, Doel, P, Fanning, K, Font-Ribera, A, Forero-Romero, JE, Gontcho, S Gontcho A, Gutierrez, G, Guy, J, Honscheid, K, Kirkby, D, Kremin, A, Landriau, M, Le Guillou, L, Levi, ME, Magneville, C, Manera, M, Martini, P, Meisner, A, Miquel, R, Moon, B, Newman, JA, Niz, G, Palanque-Delabrouille, N, Park, C, Percival, WJ, Prada, F, Rossi, G, Ruhlmann-Kleider, V, Sanchez, E, Schlafly, EF, Schubnell, M, Seo, H, Sprayberry, D, Tarlé, G, Weaver, BA, Yang, Y, Yèche, C, Zou, H   +54 more
openaire   +5 more sources

LATIS Data Release: ∼4200 Spectra of z ∼ 2–3 Galaxies, Redshifts, and Intergalactic Medium Tomography Maps

The Astrophysical Journal Supplement Series
We present the data release of the Ly α Tomography IMACS Survey (LATIS), one of the largest optical spectroscopic surveys of faint high-redshift galaxies.
Andrew B. Newman, Gwen C. Rudie, Guillermo A. Blanc, Daniel D. Kelson, Nima Chartab, Enrico Congiu, Victoria Pérez, Mahdi Qezlou, Simeon Bird, Brian C. Lemaux, Olga Cucciati   +10 more
doaj   +1 more source

Cosmology from clustering of Lyman-alpha galaxies: breaking non-gravitational Lyman-alpha radiative transfer degeneracies using the bispectrum

, 2012
Large surveys for Lyman-alpha emitting (LAE) galaxies have been proposed as a new method for measuring clustering of the galaxy population at high redshift with the goal of determining cosmological parameters.
Greig, Bradley, Komatsu, Eiichiro, Wyithe, J. Stuart B.   +2 more
core   +1 more source

The galaxy-IGM connection in THESAN: the physics connecting the IGM Lyman-$α$ opacity and galaxy density in the reionization epoch

The Open Journal of Astrophysics
The relation between the Lyman-$\alpha$ effective optical depth of quasar sightlines ($\tau_\mathrm{los}$) and the distribution of galaxies around them is an emerging probe of the connection between the first collapsed structures and the IGM properties ...
Enrico Garaldi, Verena Bellscheidt, Aaron Smith, Rahul Kannan   +3 more
doaj   +1 more source

A Nitrogen-rich AGN Powering a Large Ionizing Bubble at z = 8.63

The Astrophysical Journal
We report the detection of Ly α in CANUCS-LRD-z8.6, a recently discovered active galactic nucleus (AGN) at z = 8.63 by R. Tripodi et al. ( 2025 ), in new NIRSpec/MSA G140H/F070LP observations.
Takahiro Morishita, Massimo Stiavelli, Charlotte A. Mason, Roberta Tripodi, Marco Chiaberge, Stefan Schuldt, Chris J. Willott, Yechi Zhang   +7 more
doaj   +1 more source

Escape Fractions from Unattenuated Lyα Emitters around Luminous z > 6 Quasars

The Astrophysical Journal Letters
Ionized proximity zones around luminous quasars provide a unique laboratory to characterize the Ly α emission lines from z  > 6 galaxies without significant attenuation from the intergalactic medium (IGM).
Minghao Yue, Anna-Christina Eilers, Jorryt Matthee, Rohan P. Naidu, Rongmon Bordoloi, Frederick B. Davies, Joseph F. Hennawi, Daichi Kashino, Ruari Mackenzie, Robert A. Simcoe   +9 more
doaj   +1 more source

Evidence for Spatially Compact Lyman Alpha Emission in z=3.1 Lyman-Alpha-Emitting Galaxies

, 2010
We present the results of a high-spatial-resolution study of the line emission in a sample of z=3.1 Lyman-Alpha-Emitting Galaxies (LAEs) in the Extended Chandra Deep Field-South. Of the eight objects with coverage in our HST/WFPC2 narrow-band imaging, two have clear detections and an additional two are barely detected (~2-sigma).
Bond, Nicholas A., Feldmeier, John J., Matkovic, Ana, Gronwall, Caryl, Ciardullo, Robin, Gawiser, Eric   +5 more
openaire   +2 more sources

The Sunburst Arc with JWST. IV. The Importance of Interaction, Turbulence, and Feedback for Lyman-continuum Escape

The Astrophysical Journal
At present, the best opportunity for detailed Lyman continuum (LyC) escape studies is in gravitationally lensed galaxies at z  ≳ 2. Only one such galaxy currently exists in the literature with sufficient magnification and spatial resolution: the Sunburst
T. Emil Rivera-Thorsen, Brian Welch, Taylor Hutchison, Matthew J. Hayes, Jane R. Rigby, Keunho Kim, Suhyeon Choe, Michael Florian, Matthew B. Bayliss, Gourav Khullar, Keren Sharon, Håkon Dahle, John Chisholm, Erik Solhaug, M. Riley Owens, Michael D. Gladders   +15 more
doaj   +1 more source