Results 51 to 60 of about 141,253 (114)

Beacons into the Cosmic Dark Ages: Boosted Transmission of Lyα from UV Bright Galaxies at z ≳ 7 [PDF]

, 2018
Recent detections of Lyman alpha (Lyα) emission from z > 7.5 galaxies were somewhat unexpected given a dearth of previous non-detections in this era when the intergalactic medium (IGM) is still highly neutral.
Tommaso Treu, Mark Dijkstra, Andrei Mesinger, Stephane de Barros, Michele Trenti, Trenti, Michele, De Barros, Stephane, Pentericci, Laura, Adriano Fontana, Mason, Charlotte A., Treu, Tommaso, Mesinger, Andrei, Charlotte A. Mason, Dijkstra, Mark, Fontana, Adriano, Laura Pentericci, Eros Vanzella, Vanzella, Eros   +17 more
core   +1 more source

JWST Unveils the Bimodal Nature of Lyα Emitters at 3 < z < 7: Pristine versus Merger-driven Populations

The Astrophysical Journal
We present a systematic study of merging galaxies among Lyα emitters (LAEs) using James Webb Space Telescope/NIRCam high-resolution imaging data. From a large sample of 817 spectroscopically confirmed LAEs at 3  6 to 70% at z  
Jian Ren, F. S. Liu, Nan Li, Qi Song, Pinsong Zhao, Qifan Cui, Yubin Li, Hao Mo, Guanghuan Wang, Hassen M. Yesuf, Weichen Wang   +10 more
doaj   +1 more source

Characterising Lyα damping wings at the onset of reionisation

Astronomy & Astrophysics
One of the major conundrums in contemporary extragalactic astrophysics is the apparent overabundance of a remarkable population of UV-bright galaxies at redshifts z ≳ 9.
Pollock Clara L., Heintz Kasper E., Witstok Joris, Gottumukkala Rashmi, Brammer Gabriel, Bose Sownak, Cameron Alex J., Dayal Pratika, van Dokkum Pieter, Fynbo Johan, Gelli Viola, Hayes Matthew J., Inoue Akio K., Lagos Claudia del P., Laursen Peter, Meyer Romain A., Naidu Rohan, Oesch Pascal, Rowland Lucie E., Tanvir Nial R., Tacchella Sandro, Terp Chamilla, Valentino Francesco, Walter Fabian, Weaver John, Witten Callum   +25 more
doaj   +1 more source

Extended Tidal Structure in Two Lyα-emitting Starburst Galaxies

, 2004
International audienceWe present new Very Large Array (VLA) C-configuration H I imaging of the Lyα-emitting starburst galaxies Tol 1924-416 and IRAS 08339+6517.
Kunth, Daniel, Leitherer, Claus, Mas-Hesse, Miguel, Skillman, Evan D., Östlin, Göran, Petrosian, Artashes, Cannon, John M.   +6 more
core   +1 more source

3D Lyα radiation transfer - I. understanding Lyα line profile morphologies

, 2006
Aims.The development of a general code for 3D Lyα radiation transfer in galaxies to understand the diversity of Lyα line profiles observed in star-forming galaxies and related objects.
D. Schaerer, A. Maselli, A. Verhamme, Verhamme, A., Schaerer, D., Maselli, A.   +5 more
core   +1 more source

Gravity-driven Lyα blobs from cold streams into galaxies [PDF]

, 2017
We use high-resolution cosmological hydrodynamical adaptive mesh refinement (AMR) simulations to predict the characteristics of Lyα emission from the cold gas streams that fed galaxies in massive haloes at high redshift.
Goerdt, Tobias, Primack, J. R., Sternberg, A., Ceverino, D., Dekel, A., Teyssier, R.   +5 more
core  

Neutral gas properties of high-redshift analog galaxies [Elektronisk resurs] : 21cm observations of Lyα and LyC-emitting galaxies

, 2023
Neutral hydrogen (HI) is the most abundant baryonic element and a crucial component of galaxies. In the early universe, the interaction between neutral gas and the light produced by galaxies is thought to have given rise to cosmological reionization ...
Bouwens, Rychard,, Le Reste, Alexandra,, Hayes, Matthew J.,, Cannon, John,   +3 more
core  

Absorption Troughs of Lyα Emitters in HETDEX

The Astrophysical Journal
The Hobby–Eberly Telescope Dark Energy Experiment (HETDEX) is designed to detect and measure the redshifts of more than 1 million Ly α emitting galaxies (LAEs) 1.88 < z < 3.52. In addition to its cosmological measurements, these data enable studies of Ly
Laurel H. Weiss, Dustin Davis, Karl Gebhardt, Simon Gazagnes, Mahan Mirza Khanlari, Erin Mentuch Cooper, John Chisholm, Danielle Berg, William P. Bowman, Chris Byrohl, Robin Ciardullo, Maximilian Fabricius, Daniel Farrow, Caryl Gronwall, Gary J. Hill, Lindsay R. House, Donghui Jeong, Hasti Khoraminezhad, Wolfram Kollatschny, Eiichiro Komatsu, Maja Lujan Niemeyer, Shun Saito, Donald P. Schneider, Gregory R. Zeimann   +23 more
doaj   +1 more source

Mapping the dynamics, star-formation rates, and chemical properties of galaxies with integral field spectroscopy [PDF]

, 2005
Major advances in the development of instruments for eight and ten meter class telescopes are revolutionising our understanding of galaxy formation. In particular, Integral Field Spectrographs (which produce a three dimensional {x, y, velocity) map of a ...
Swinbank, Anthony Mark, Swinback, Anthony Mark   +1 more
core  

MAMMOTH-Subaru. V. Effects of Cosmic Variance on Lyα Luminosity Functions at z = 2.2–2.3

The Astrophysical Journal
Cosmic variance introduces significant uncertainties into galaxy number density properties when surveying the high-redshift Universe with a small volume.
Ke Ma, Haibin Zhang, Zheng Cai, Yongming Liang, Nobunari Kashikawa, Mingyu Li, Yunjing Wu, Qiong Li, Xiaohui Fan, Sean D. Johnson, Masami Ouchi   +10 more
doaj   +1 more source