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Related papers: Large-Scale Structure of Short-Lived Lyman\alpha E…

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We use the {\sc astraeus} framework to investigate how the visibility and spatial distribution of Lyman-$\alpha$ (Ly$\alpha$) emitters (LAEs) during reionisation is sensitive to a halo mass-dependent fraction of ionising radiation escaping…

Astrophysics of Galaxies · Physics 2023-08-09 Anne Hutter , Maxime Trebitsch , Pratika Dayal , Stefan Gottlöber , Gustavo Yepes , Laurent Legrand

We report results of a unprecedentedly deep, blind search for Ly-alpha emitters (LAEs) at z = 5.7 using IMACS, the Inamori-Magellan Areal Camera & Spectrograph, with the goal of identifying missing sources of reionization that could also be…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 Alan Dressler , Crystal L. Martin , Alaina Henry , Marcin Sawicki , Patrick McCarthy

We report optical VLT FORS2 spectroscopy of the two Ly-alpha emitters (LAEs) companions to the quasi-stellar object (QSO) - sub-millimetre galaxy (SMG) system BRI1202-0725 at z = 4.7, which have recently been detected in the [CII]158um line…

Astrophysics of Galaxies · Physics 2015-06-18 R. J. Williams , J. Wagg , R. Maiolino , C. Foster , M. Aravena , T. Wiklind , C. L. Carilli , R. G. McMahon , D. Riechers , F. Walter

The Ly$\alpha$ line of high-redshift galaxies has emerged as a powerful probe of both early galaxy evolution and the epoch of reionization (EoR). Motivated by the upcoming wide-field survey with the Subaru Hyper Suprime-Cam (HSC), we study…

Cosmology and Nongalactic Astrophysics · Physics 2015-09-10 Emanuele Sobacchi , Andrei Mesinger

We present results of a spectroscopic search for Lyman-alpha emitters (LAEs) in the Cl1604 supercluster field using the extensive spectroscopic Keck/DEIMOS database taken as part of the Observations of Redshift Evolution in Large Scale…

We present semi-analytical models of high redshift Lyman-{\alpha} emitters (LAEs) in order to constrain the star formation efficiency in those galaxies. Our supernova feedback induced star formation model along with Sheth-Tormman halo mass…

Astrophysics of Galaxies · Physics 2019-06-25 Arnab Sarkar , Saumyadip Samui

Surveys of faint galaxies at high redshifts often result in a "pencil-beam" geometry that is much longer along the line-of-sight than across the sky. We explore the effects of this geometry on the abundance and clustering of Lyman-break…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 Joseph A. Muñoz , Hy Trac , Abraham Loeb

The recently discovered population of ultra-faint extended line emitters can account for the majority of the incidence rate of Damped Lyman Alpha systems (DLAs) at z ~ 3 if the line emission is interpreted as Ly alpha. We show here that a…

Astrophysics · Physics 2011-01-19 Luke A. Barnes , Martin G. Haehnelt

We investigate the rest-frame UV morphologies of a large sample of Lyman-a emitters (LAEs) from z~2 to z~6, selected in a uniform way with 16 different narrow- and medium-bands over the full COSMOS field. We use 3045 LAEs with HST coverage…

We report a new technique to select 1.6<z<4.6 dusty Lyman-alpha emitters (LAEs), over a third of which are `blobs' (LABs) with emission extended on scales of 30-100kpc. Combining data from the NASA Wide-field Infrared Survey Explorer (WISE)…

Deep, 17.8 hours, narrow band imaging obtained at the ESO 3.5m New Technology Telescope has revealed extended (galaxy sized) Ly-alpha emission from a high redshift Lyman limit absorber. The absorber is a z(abs) approx. z(em) Lyman limit…

Astrophysics · Physics 2011-05-23 J. U. Fynbo , B. Thomsen , P. Moller

We present diffuse Lyman-alpha halos (LAHs) identified in the composite Subaru narrowband images of 100-3600 Lyman-alpha emitters (LAEs) at z=2.2, 3.1, 3.7, 5.7, and 6.6. First, we carefully examine potential artifacts mimicking LAHs that…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-19 Rieko Momose , Masami Ouchi , Kimihiko Nakajima , Yoshiaki Ono , Takatoshi Shibuya , Kazuhiro Shimasaku , Suraphong Yuma , Masao Mori , Masayuki Umemura

The Ly-alpha luminosity function (LF) of high-redshift Ly-alpha emitters (LAEs) is one of the few observables of the re-ionization epoch accessible to date with 8-10 m class telescopes. The evolution with redshift allows one to constrain…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 P. Hibon , J. -G. Cuby , J. Willis , B. Clément , C. Lidman , S. Arnouts , J. -P. Kneib , C. J. Willott , C. Marmo , H. McCracken

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). This model combines observed UV-LFs of…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-23 Max Gronke , Mark Dijkstra , Michele Trenti , Stuart Wyithe

Lyman-{\alpha} emitters (LAEs) are a promising target to probe the large scale structure of the Universe at high redshifts, $z\gtrsim 2$. However, their detection is sensitive to radiative transfer effects that depend on local astrophysical…

Cosmology and Nongalactic Astrophysics · Physics 2019-04-10 Siddhartha Gurung-López , Álvaro A. Orsi , Silvia Bonoli , Carlton M. Baugh , Cedric G. Lacey

We investigate the spatial distribution of Lyman alpha emitting galaxies (LAEs) at $z \approx 2.67$, selected from the NOAO Deep Wide-Field Survey (NDWFS), using two-point statistics and topological diagnostics adopted from network science.…

Lyman-alpha emitters are thought to be young, low-mass galaxies with ages of ~10^8 yr. An overdensity of them in one region of the sky (the SSA 22 field) traces out a filamentary structure in the early Universe at a redshift of z = 3.1…

We study the Ly$\alpha$ escape fraction, $f_{\mathrm{esc}}^{\mathrm{Ly\alpha}}$ of Ly$\alpha$ emitters (LAEs) identified by Subaru/HSC narrowband imaging at $z = 2.2-6.6$, using publicly available deep imaging data from HST and JWST. We…

Astrophysics of Galaxies · Physics 2025-09-17 Shunta Shimizu , Nobunari Kashikawa , Satoshi Kikuta , Yoshihiro Takeda , Junya Arita , Ryo Emori , Kentaro Koretomo

We selected 40 candidate Lyman Alpha Emitting galaxies (LAEs) at z ~=3.1 with observed frame equivalent widths >150A and inferred emission line fluxes >2.5x10^-17 ergs/cm^2/s from deep narrow-band and broad-band MUSYC images of the Extended…

We report the discovery of a large-scale structure containing multiple overdensities at $z= 4.54 \pm 0.03$ in the COSMOS field, with the most prominent one likely infalling towards the recently identified Taralay protocluster. We use…

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