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We construct a flux-limited sample of 135 candidate z~1 Lya emitters (LAEs) from Galaxy Evolution Explorer (GALEX) grism data using a new data cube search method. These LAEs have luminosities comparable to those at high redshifts and lie…

Cosmology and Nongalactic Astrophysics · Physics 2014-03-05 Isak G. B. Wold , Amy J. Barger , Lennox L. Cowie

We present the results of a search for Lyman-alpha emission galaxies at z~ 5.7 in the FORS Deep Field. The objective of this study is to improve the faint end of the luminosity function of high-redshift Lyman-alpha emitting galaxies and to…

Astrophysics · Physics 2009-11-11 C. Tapken , I. Appenzeller , A. Gabasch , J. Heidt , U. Hopp , R. Bender , D. Mehlert , S. Noll , S. Seitz , W. Seifert

The GALEX (Galaxy Evolution Explorer) spectroscopic survey mode, with a resolution of about 8 A in the FUV (1350 - 1750 A) and about 20 A in the NUV (1950 - 2750 A) is used for a systematic search of Ly-a emitting galaxies at low redshift.…

We present a spectroscopic survey of high-redshift, luminous galaxies over four square degrees on the sky, aiming to build a large and homogeneous sample of Ly$\alpha$ emitters (LAEs) at $z\approx5.7$ and 6.5, and Lyman-break galaxies…

We discovered a sample of 250 Ly-Alpha emitting (LAE) galaxies at z=2.1 in an ultra-deep 3727 A narrow-band MUSYC image of the Extended Chandra Deep Field-South. LAEs were selected to have rest-frame equivalent widths (EW) > 20 A and…

Cosmology and Nongalactic Astrophysics · Physics 2014-11-20 L. Guaita , E. Gawiser , N. Padilla , H. Francke , N. A. Bond , C. Gronwall , R. Ciardullo , J. J. Feldmeier , S. Sinawa , G. A. Blanc , S. Virani

We study a sample of 14 spectroscopically confirmed Ly$\alpha$ Emitters (LAEs) in the late era of reionization (at redshift $z\approx6$) based on the JWST/NIRCam imaging dataset. These LAEs with high Ly$\alpha$ luminosity of $L$(Ly$\alpha$)…

Astrophysics of Galaxies · Physics 2024-03-07 Yuanhang Ning , Zheng Cai , Xiaojing Lin , Zhen-Ya Zheng , Xiaotong Feng , Mingyu Li , Qiong Li , Daniele Spinoso , Yunjing Wu , Haibin Zhang

We present a catalog of 59 z=4.5 Lyman alpha emitting galaxies spectroscopically confirmed in a campaign of Keck/DEIMOS follow-up observations to candidates selected in the Large Area Lyman Alpha (LALA) narrow-band imaging survey. We…

Lyman alpha (Lya) emission lines should be attenuated in a neutral intergalactic medium (IGM). Therefore the visibility of Lya emitters at high redshifts can serve as a valuable probe of reionization at about the 50% level. We present an…

We describe the results of a new, wide-field survey for z=3.1 Ly-alpha emission-line galaxies (LAEs) in the Extended Chandra Deep Field South (ECDF-S). By using a nearly top-hat 5010 Angstrom filter and complementary broadband photometry…

The detection of Lyman-$\alpha$ emitting galaxies (LAEs) puts severe constraints on the reionization history. In this Paper we derive the properties of very high-$z$ LAEs predicted in the only two reionization scenarios shown in a previous…

We carried out extended spectroscopic confirmations of Ly-alpha emitters (LAEs) at z=6.5 and 5.7 in the Subaru Deep Field. Now, the total number of spectroscopically confirmed LAEs is 45 and 54 at z=6.5 and 5.7, respectively, and at least…

We investigate the stellar populations of Lyman alpha emitters (LAEs) at z=5.7 and 6.6 in a 0.65 deg^2 sky of the Subaru/XMM-Newton Deep Survey (SXDS) Field, using deep images taken with Subaru/Suprime-Cam, UKIRT/WFCAM, and Spitzer/IRAC. We…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 Yoshiaki Ono , Masami Ouchi , Kazuhiro Shimasaku , James Dunlop , Duncan Farrah , Ross McLure , Sadanori Okamura

We present Ly$\alpha$ and ultraviolet-continuum (UV) luminosity functions (LFs) of galaxies and active galactic nuclei (AGN) at $z=2.0-3.5$ determined by the un-targetted optical spectroscopic survey of the Hobby-Eberly Telescope Dark…

New results are presented, as part of the Hi-z Emission Line Survey (HiZELS), from the largest area survey to date (1.4 sq.deg) for Lyman-alpha emitters (LAEs) at z~9. The survey, which is primarily targeting H-alpha emitters at z<3, uses…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 D. Sobral , P. N. Best , J. E. Geach , Ian Smail , J. Kurk , M. Cirasuolo , M. Casali , R. J. Ivison , K. Coppin , G. B. Dalton

We present a study of the galaxy Lyman-alpha luminosity function (LF) using a sample of 17 lensing clusters observed by the MUSE/VLT. Magnification from strong gravitational lensing by clusters of galaxies and MUSE apabilities allow us to…

We present a spectroscopic survey of Ly$\alpha$ emitters (LAEs) at $z\approx5.7$ using the multi-object spectrograph M2FS on the Magellan Clay telescope. This is part of a high-redshift galaxy survey carried out in several well-studied deep…

Astrophysics of Galaxies · Physics 2020-11-04 Yuanhang Ning , Linhua Jiang , Zhen-Ya Zheng , Jin Wu , Fuyan Bian , Eiichi Egami , Xiaohui Fan , Luis C. Ho , Yue Shen , Ran Wang , Xue-Bing Wu

Ly$\alpha$-emitting galaxies (LAEs) are easily detectable in the high-redshift Universe and are potentially efficient tracers of large scale structure at early epochs, as long as their observed properties do not strongly depend on…

Astrophysics of Galaxies · Physics 2021-11-17 Nicola Malavasi , Kyoung-Soo Lee , Arjun Dey , Rui Xue , Yun Huang , Ke Shi

We report an extensive search for Lyman-alpha emitters (LAEs) at z=6.5 in the Subaru Deep Field. Subsequent spectroscopy with Subaru and Keck identified eight more LAEs, giving a total of 17 spectroscopically confirmed LAEs at z=6.5. Based…

Lyman-alpha emitting galaxies can be used to study cosmological reionization, because a neutral intergalactic medium scatters Lyman-alpha photons into diffuse halos whose surface brightness falls below typical survey detection limits. Here…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-05 James E. Rhoads , Pascale Hibon , Sangeeta Malhotra , Michael Cooper , Benjamin Weiner

We measure the evolution of the rest-frame UV luminosity function (LF) and the stellar mass function (SMF) of Lyman-alpha (Lya) emitters (LAEs) from z~2 to z~6 by exploring ~4000 LAEs from the SC4K sample. We find a correlation between Lya…