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Ultraluminous Lyman alpha (Lya) emitting galaxies (ULLAEs) with log L (Lya)>43.5 erg/s near the epoch of reionization (z>5) make up the bright end of the LAE luminosity function (LF) and may provide insight into the process of reionization,…

Astrophysics of Galaxies · Physics 2022-07-13 Anthony J. Taylor , Lennox L. Cowie , Amy J. Barger , Esther M. Hu , Antoinette Songaila

We present spectroscopic Ly$\alpha$ luminosity functions (LFs) at z = 5.7 and z = 6.6 based on a large 209 source sample of Ly$\alpha$ emitter (LAE) candidates identified in Subaru/Hyper Suprime-Cam narrowband imaging and confirmed with…

Astrophysics of Galaxies · Physics 2025-06-18 A. J. Taylor , A. J. Barger , L. L. Cowie , E. M. Hu , A. Songaila

We report on a search for ultraluminous Lyman alpha emitting galaxies (LAEs) at z=6.6 using the NB921 filter on Hyper Suprime-Cam on the Subaru telescope. We searched a 30 degree squared area around the North Ecliptic Pole, which we…

We report the first direct and robust measurement of the faint-end slope of the Lyman-alpha emitter (LAE) luminosity function at z = 5.7. Candidate LAEs from a low-spectral-resolution blind search with IMACS on Magellan-Baade were targeted…

Astrophysics of Galaxies · Physics 2015-06-11 Alan Dressler , Alaina Henry , Crystal L. Martin , Marcin Sawicki , Patrick McCarthy , Edward Villaneuva

Using wide field narrow-band surveys, we provide a new measurement of the $z=6.6$ Lyman-$\alpha$ Emitter (LAE) luminosity function (LF), which constraints the bright end for the first time. We use a combination of archival narrow-band NB921…

Astrophysics of Galaxies · Physics 2015-06-01 Jorryt Matthee , David Sobral , Sérgio Santos , Huub Röttgering , Behnam Darvish , Bahram Mobasher

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 present a sample of Ly{\alpha} emitters (LAEs) at $z\approx6.6$ from our spectroscopic survey of high-redshift galaxies using the multi-object spectrograph M2FS on the Magellan Clay telescope. The sample consists of 36 LAEs selected by…

Astrophysics of Galaxies · Physics 2022-03-09 Yuanhang Ning , Linhua Jiang , Zhen-Ya Zheng , Jin Wu

Recent evidence suggests that high-redshift Ly-alpha emitting galaxies (LAEs) with logL(Ly-alpha) > 43.5 erg/s, referred to as ultraluminous LAEs (ULLAEs), may show less evolution than lower-luminosity LAEs in the redshift range z=5.7-6.6.…

Astrophysics of Galaxies · Physics 2022-12-20 A. Songaila , A. J. Barger , L. L. Cowie , E. M. Hu , A. J. Taylor

We detect 20 $z=7.0$ Ly$\alpha$ emitter (LAE) candidates to $L({\rm Ly}\alpha) \geq 2 \times 10^{42}$ erg s$^{-1}$ or $0.3$ $L^*_{z=7}$ and in $6.1\times 10^5$ Mpc$^3$ volume in the Subaru Deep Field and the Subaru/XMM-Newton Deep Survey…

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

We present a large sample of Ly-alpha emitting galaxies spectroscopically confirmed at z~4.5, based on IMACS spectroscopic observations of candidate LAEs in the LALA Cetus field. We identify 110 z~4.5 LAEs based on single line detections…

Cosmology and Nongalactic Astrophysics · Physics 2009-11-13 Jun-Xian Wang , Sangeeta Malhotra , James E. Rhoads , Hao-Tong Zhang , Steven L. Finkelstein

Using new Keck DEIMOS spectroscopy, we examine the origin of the steep number counts of ultra-faint emission-line galaxies recently reported by Dressler et al. (2011). We confirm six Lyman Alpha emitters (LAEs), three of which have…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-03 Alaina Henry , Crystal Martin , Alan Dressler , Marcin Sawicki , Patrick McCarthy

Recent observations of z >~ 7 Ly{\alpha} emitters (LAEs) have derived a variety of Ly{\alpha} luminosity functions (LFs) with contradictory results, evolution or non-evolution from z <~ 6, the epoch after reionization. This could be because…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-04 Kazuaki Ota , Masanori Iye

We present the Ly$\alpha$ luminosity functions (LFs) at $z=$5.7 and 6.6 derived from a new large sample of 1,266 Ly$\alpha$ emitters (LAEs) identified in total areas of 14 and 21 deg$^2$, respectively, based on the early narrowband data of…

We present a spectroscopic survey of Ly$\alpha$ emitters (LAEs) at $z\sim3.7$ and $z\sim4.8$. The LAEs are selected using the narrowband technique based on the combination of deep narrowband and broadband imaging data in two deep fields,…

Astrophysics of Galaxies · Physics 2023-10-12 Weiyang Liu , Linhua Jiang

We present spectroscopic follow-up observations on two bright Ly$\alpha$ emitter (LAE) candidates originally found by Krug et al. (2012) at a redshift of z~7.7 using the Multi-Object Spectrometer for Infra-Red Exploration (MOSFIRE) at Keck.…

Cosmology and Nongalactic Astrophysics · Physics 2014-05-27 A. L. Faisst , P. Capak , C. M. Carollo , C. Scarlata , N. Scoville

We present a new measurement of the Ly$\alpha$ luminosity function at redshift $z=6.9$, finding moderate evolution from $z=5.7$ that is consistent with a fully or largely ionized $z\sim7$ intergalactic medium. Our result is based on four…

(Abridged) We investigate the Lyman $\alpha$ emitter luminosity function (LAE LF) within the redshift range $2.9 \leq z \leq 6$ from the first instalment of the blind integral field spectroscopic survey MUSE-Wide. This initial part of the…

We present a spectroscopically confirmed sample of Lyman alpha emitting galaxies (LAEs) at z ~ 4.5 in the Extended Chandra Deep Field South (ECDFS), which we combine with a sample of z ~ 4.5 LAEs from the Large Area Lyman Alpha (LALA)…

We present 36 spectroscopically confirmed intrinsically UV-faint Ly$\alpha$ emitting galaxies from follow-up observations with Keck/DEIMOS of gravitationally lensed high-redshift candidates. Candidates were selected to be between $5\lesssim…

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