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相关论文: A Comprehensive Study of Ly$\alpha$ Emission in th…

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In this work, we show how the stellar mass (M) of galaxies affects the 3<z<4.6 Ly-alpha equivalent width (EW) distribution. To this end, we design a sample of 629 galaxies in the M range 7.6 < logM/Msun < 10.6 from the 3D-HST/CANDELS…

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 the first results from our CAlibrating LYMan-$\alpha$ with H$\alpha$ (CALYMHA) pilot survey at the Isaac Newton Telescope. We measure Ly$\alpha$ emission for 488 H$\alpha$ selected galaxies at $z=2.23$ from HiZELS in the COSMOS…

星系天体物理 · 物理学 2016-02-17 Jorryt Matthee , David Sobral , Ivàn Oteo , Philip Best , Ian Smail , Huub Röttgering , Ana Paulino-Afonso

Ly$\alpha$ emission is widely used to detect and confirm high-redshift galaxies and characterize the evolution of the intergalactic medium. However, many galaxies do not display Ly$\alpha$ emission in typical spectroscopic observations, and…

星系天体物理 · 物理学 2020-01-08 Ryan F. Trainor , Allison L. Strom , Charles C. Steidel , Gwen C. Rudie , Yuguang Chen , Rachel L. Theios

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…

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$\alpha$…

Based on the Sloan Digital Sky Survey Data Release 16, we have detected the large-scale structure of Ly$\alpha$ emission in the Universe at redshifts $z = 2$--3.5 by cross-correlating quasar positions and Ly$\alpha$ emission imprinted in…

星系天体物理 · 物理学 2022-09-28 Xiaojing Lin , Zheng Zheng , Zheng Cai

Low mass, low metallicity galaxies at low to moderate ($z\lesssim3$) redshifts offer the best opportunity for detailed examination of the interplay between massive stars, ionizing radiation and gas in sources similar to those that likely…

星系天体物理 · 物理学 2019-10-16 Dawn K. Erb , Danielle A. Berg , Matthew W. Auger , David L. Kaplan , Gabriel Brammer , Max Pettini

We present theoretical results for the expected fraction of Lyman Break Galaxies (LBGs) to be detected as strong Lyman alpha emitters (LAEs) in the redshift range 5 < z < 7. We base our analysis on the 2-billion particle SPH simulation…

宇宙学与河外天体物理 · 物理学 2015-05-30 J. E. Forero-Romero , G. Yepes , S. Gottloeber , F. Prada

We present spectroscopic confirmation of ten highly luminous (L >= 2L*) Lyman alpha emitters in the redshift range 6.01<z<6.49 (nine galaxies and one AGN), initially drawn from a sample of fourteen z_phot >= 6 Lyman break galaxies (LBGs)…

宇宙学与河外天体物理 · 物理学 2015-05-30 E. Curtis-Lake , R. J. McLure , H. J. Pearce , J. S. Dunlop , M. Cirasuolo , D. P. Stark , O. Almaini , E. J. Bradshaw , R. Chuter , S. Foucaud , W. G. Hartley

A significant fraction of the high-redshift galaxies show strong Lyman emission lines. For redshifts z>5, most known galaxies belong to this class. However, so far not much is known about the physical structure and nature of these objects.…

天体物理学 · 物理学 2009-11-13 C. Tapken , I. Appenzeller , S. Noll , S. Richling , J. Heidt , E. Meinkoehn , D. Mehlert

We investigate the effects of stellar populations and sizes on Ly$\alpha$ escape in 27 spectroscopically confirmed and 35 photometric Lyman-Alpha Emitters (LAEs) at z $\approx$ 2.65 in seven fields of the Bo\"otes region of the NOAO Deep…

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 report the first space-based very deep near-infrared continuum observations of a uniform sample of z = 6.5 galaxies with log(L(L_alpha)) = 42.5 - 43 erg/s selected from narrow-band line searches and with spectroscopically confirmed Ly…

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

We present a study of Lyman continuum (LyC) emission in a sample of $\sim$150 Ly$\alpha$ emitters (LAEs) at $z\approx3.1$ in the Subaru-XMM Deep Survey field. These LAEs were previously selected using the narrowband technique and…

星系天体物理 · 物理学 2023-10-12 Yuchen Liu , Linhua Jiang , Rogier A. Windhorst , Yucheng Guo , Zhenya Zheng

JWST provides an unprecedented opportunity for unbiased surveys of H$\alpha$-emitting galaxies at $z>4$ with the NIRCam wide-field slitless spectroscopy (WFSS). In this work, we present a census of Ly$\alpha$ escape fraction ($f_{esc,…

The physical processes which make a galaxy a Lyman Alpha Emitter have been extensively studied for the past 25 years. However, the correlations between physical and morphological properties of galaxies and the strength of the Ly$\alpha$…

[abbreviated] We present a census of Ly\alpha\ emission at $z\gtrsim7$ utilizing deep near infrared HST grism spectroscopy from the first six completed clusters of the Grism Lens-Amplified Survey from Space (GLASS). In 24/159…

We present a measurement of the fraction of Lyman $\alpha$ (Ly$\alpha$) emitters ($X_{\rm{Ly} \alpha}$) amongst HST continuum-selected galaxies at $3<z<6$ with the Multi-Unit Spectroscopic Explorer (MUSE) on the VLT. Making use of the first…

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