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相关论文: Lyman alpha emitting galaxies at 0.2 < z < 0.35 fr…

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We present a new model for high redshift Lyman-Alpha Emitters (LAEs) in the cosmological context which takes into account the resonant scattering of Ly-a photons through expanding gas. The GALICS semi-analytic model provides us with the…

宇宙学与河外天体物理 · 物理学 2015-06-04 Thibault Garel , Jérémy Blaizot , Bruno Guiderdoni , Daniel Schaerer , Anne Verhamme , Matthew Hayes

Using a sample of 92 UV continuum-selected, spectroscopically identified galaxies with <z> = 2.65, all of which have been imaged in the Ly-a line with extremely deep narrow-band imaging, we examine galaxy Ly-a emission profiles to very…

宇宙学与河外天体物理 · 物理学 2015-05-27 C. C. Steidel , M. Bogosavljević , A. E. Shapley , J. A. Kollmeier , N. A. Reddy , D. K. Erb , M. Pettini

We construct a sample of low-redshift Ly-alpha emission-line selected sources from GALEX grism spectroscopy of nine deep fields to study the role of Ly-alpha emission in galaxy populations with cosmic time. Our final sample consists of 119…

宇宙学与河外天体物理 · 物理学 2011-02-11 L. L. Cowie , A. J. Barger , E. M. Hu

We present a flux-limited sample of $z\sim0.3$ Ly$\alpha$ emitters (LAEs) from Galaxy Evolution Explorer (GALEX) grism spectroscopic data. The published GALEX $z\sim0.3$ LAE sample is pre-selected from continuum-bright objects and thus is…

星系天体物理 · 物理学 2017-11-01 Isak G. B. Wold , Steven L. Finkelstein , Amy J. Barger , Lennox L. Cowie , Benjamin Rosenwasser

We present optical spectroscopy of two samples of GALEX grism selected Ly alpha emitters (LAEs): one at z=0.195-0.44 and the other at z=0.65-1.25. We have also observed a comparison sample of galaxies in the same redshift intervals with the…

宇宙学与河外天体物理 · 物理学 2015-05-28 Lennox L. Cowie , Amy J. Barger , Esther M. Hu

We study the properties of Lyman-alpha emitters (LAEs) and Lyman-break galaxies (LBGs) at z=3-6 using cosmological SPH simulations. We investigate two simple scenarios for explaining the observed Ly-a and rest-frame UV luminosity functions…

天体物理学 · 物理学 2015-05-13 Kentaro Nagamine , Masami Ouchi , Volker Springel , Lars Hernquist

We present the results of a stellar population analysis of 30 Lyman alpha emitting galaxies (LAEs) at z ~ 0.3, previously discovered with the Galaxy Evolution Explorer (GALEX). With a few exceptions, we can accurately fit model spectral…

天体物理学 · 物理学 2009-07-22 Steven L. Finkelstein , Seth H. Cohen , Sangeeta Malhotra , James E. Rhoads

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…

宇宙学与河外天体物理 · 物理学 2009-11-13 Jun-Xian Wang , Sangeeta Malhotra , James E. Rhoads , Hao-Tong Zhang , Steven L. Finkelstein

Context: Narrow-band surveys for Ly-alpha emitters (LAEs) is a powerful tool in detecting high, and very high, redshift galaxies. Even though samples are growing at redshifts z = 3 - 6, the nature of these galaxies is still poorly known.…

We present a study on stellar properties of Lyman-alpha (Ly$\alpha$) emitters at 5 $< z <$ 8.2. We use 247 photometrically-selected, lensed, high-redshift, low luminosity galaxy candidates with spectroscopic follow-up. Of these, 38 are…

We present the statistical properties of Ly$\alpha$ emission in 586 galaxies at $z=4.5-14.2$, observed by multiple JWST/NIRSpec spectroscopy projects, including JADES, GLASS, CEERS, and GO/DDT programs. We obtain Ly$\alpha$ equivalent width…

Lyman $\alpha$ (Ly$\alpha$) is now routinely used as a tool for studying high-redshift galaxies and its resonant nature means it can trace neutral hydrogen around star-forming galaxies. Integral field spectrograph measurements of…

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…

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

We present Ly $\alpha$ imaging of 45 low redshift star-forming galaxies observed with the Hubble Space Telescope. The galaxies have been selected to have moderate to high star formation rates using far-ultraviolet (FUV) luminosity and \ha…

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…

We investigate the fraction of z ~ 0.3 Lyman alpha emitting galaxies (LAEs) which host active galactic nucleus activity, which is typically from 1 - 5% at 2 < z < 6. Using optical spectroscopy of 23 LAEs at 0.2 < z < 0.45 selected with…

宇宙学与河外天体物理 · 物理学 2009-09-24 Steven L. Finkelstein , Seth H. Cohen , Sangeeta Malhotra , James E. Rhoads , Casey Papovich , Zhenya Zheng , Junxian Wang

The Lyman-$\alpha$ (Ly$\alpha$) emission line has been ubiquitously used to confirm and study high redshift galaxies. We report on the line morphology as seen in the 2D spectra from the VIMOS Ultra Deep Survey in a sample of 914 Ly$\alpha$…

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…

宇宙学与河外天体物理 · 物理学 2014-03-05 Isak G. B. Wold , Amy J. Barger , Lennox L. Cowie

The analysis of the physical properties of low-redshift Ly$\alpha$ emitters (LAEs) can provide clues in the study of their high-redshift analogues. At $z \sim 0.3$, LAEs are bright enough to be detected over almost the entire…

Context: Ly-alpha-emitters have proven to be excellent probes of faint, star-forming galaxies in the high redshift universe. However, although the sample of known emitters is increasingly growing, their nature (e.g. stellar masses, ages,…

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