Results 11 to 20 of about 8,368 (167)

Lyman Alpha Emitting Galaxies in the Nearby Universe [PDF]

Publications of the Astronomical Society of Australia, 2015
AbstractThe Lyman alpha emission line (Lyα) of neutral hydrogen (Hi) is intrinsically the brightest emission feature in the spectrum of astrophysical nebulae, making it a very attractive observational feature with which to survey galaxies. Moreover as an ultraviolet resonance line, Lyα possesses several unique characteristics that make it useful to ...
Matthew Hayes
openaire   +4 more sources

Clustering of Lyman-Alpha Emitters galaxies

New Astronomy Reviews, 2009
Abstract Galaxy clustering properties have been studied for decades to constrain cosmological parameters and have today, with large datasets of high-redshift sources piling up, become a powerful tool to discriminate and characterize primeval galaxies.
openaire   +7 more sources

Damped Lyman-alpha systems and galaxy formation

The Astrophysical Journal, 1994
plain tex, 3 figures avalaible on ...
Mo, H. J., Miralda-Escude, J.
openaire   +2 more sources

HETDEX Public Source Catalog 1: 220 K Sources Including Over 50 K Lyα Emitters from an Untargeted Wide-area Spectroscopic Survey

The Astrophysical Journal, 2023
We present the first publicly released catalog of sources obtained from the Hobby-Eberly Telescope Dark Energy Experiment (HETDEX). HETDEX is an integral field spectroscopic survey designed to measure the Hubble expansion parameter and angular diameter ...
Erin Mentuch Cooper, Karl Gebhardt, Dustin Davis, Daniel J. Farrow, Chenxu Liu, Gregory Zeimann, Robin Ciardullo, John J. Feldmeier, Niv Drory, Donghui Jeong, Barbara Benda, William P. Bowman, Michael Boylan-Kolchin, Óscar A. Chávez Ortiz, Maya H. Debski, Mona Dentler, Maximilian Fabricius, Rameen Farooq, Steven L. Finkelstein, Eric Gawiser, Caryl Gronwall, Gary J. Hill, Ulrich Hopp, Lindsay R. House, Steven Janowiecki, Hasti Khoraminezhad, Wolfram Kollatschny, Eiichiro Komatsu, Martin Landriau, Maja Lujan Niemeyer, Hanshin Lee, Phillip MacQueen, Ken Mawatari, Brianna McKay, Masami Ouchi, Jennifer Poppe, Shun Saito, Donald P. Schneider, Jan Snigula, Benjamin P. Thomas, Sarah Tuttle, Tanya Urrutia, Laurel Weiss, Lutz Wisotzki, Yechi Zhang, The HETDEX collaboration   +45 more
doaj   +1 more source

Keck Spectroscopy of Faint 3 [PDF]

, 2010
As Lyman-alpha photons are scattered by neutral hydrogen, a change with redshift in the Lyman-alpha equivalent width distribution of distant galaxies offers a promising probe of the degree of ionization in the intergalactic medium and hence when cosmic ...
Ellis, Richard S., Ouchi, Masami, Stark, Daniel P.   +2 more
core   +2 more sources

HETDEX Public Source Catalog 1—Stacking 50,000 Lyman Alpha Emitters

The Astrophysical Journal, 2023
We describe the ensemble properties of the 1.9 < z < 3.5 Lyman alpha emitters (LAEs) found in the HETDEX survey’s first public data release, HETDEX Public Source Catalog 1.
Dustin Davis, Karl Gebhardt, Erin Mentuch Cooper, William P. Bowman, Barbara Garcia Castanheira, John Chisholm, Robin Ciardullo, Maximilian Fabricius, Daniel J. Farrow, Steven L. Finkelstein, Caryl Gronwall, Eric Gawiser, Gary J. Hill, Ulrich Hopp, Lindsay R. House, Donghui Jeong, Wolfram Kollatschny, Eiichiro Komatsu, Chenxu Liu, Maja Lujan Niemeyer, Alberto Saldana-Lopez, Shun Saito, Donald P. Schneider, Jan Snigula, Sarah Tuttle, Laurel H. Weiss, Lutz Wisotzki, Gregory Zeimann   +27 more
doaj   +1 more source

The Lyman Alpha Reference Sample

Astronomy & Astrophysics, 2022
Aims.We useHubbleSpace Telescope data of 45 nearby star-forming galaxies to investigate properties of Lyman-alpha (Lyα) halos, Lyαmorphology, and the star-forming characteristics of galaxies. We study how the morphology of Lyαemission is related to other Lyαobservables.
Rasekh, A., Melinder, J., Östlin, G., Hayes, M., Herenz, E. C., Runnholm, A., Kunth, D., Mas Hesse, J. M., Verhamme, A., Cannon, J. M.   +9 more
openaire   +3 more sources

The Relationship between IGM Lyα Opacity and Galaxy Density near the End of Reionization

The Astrophysical Journal, 2023
Observed scatter in the Ly α opacity of quasar sightlines at z < 6 has motivated measurements of the correlation between Ly α opacity and galaxy density, as models that predict this scatter make strong and sometimes opposite predictions for how they ...
Holly M. Christenson, George D. Becker, Anson D’Aloisio, Frederick B. Davies, Yongda Zhu, Elisa Boera, Fahad Nasir, Steven R. Furlanetto, Matthew A. Malkan   +8 more
doaj   +1 more source

Constraints on the Epoch of Reionization with Roman Space Telescope and the Void Probability Function of Lyα Emitters

The Astrophysical Journal, 2023
We use large simulations of Ly α emitters with different fractions of ionized intergalactic medium to quantify the clustering of Ly α emitters as measured by the void probability function (VPF), and how it evolves under different ionization scenarios. We
Lucia A. Perez, Sangeeta Malhotra, James E. Rhoads, Isak G. B. Wold   +3 more
doaj   +1 more source

Intensity Mapping of Lyman-alpha Emission During the Epoch of Reionization [PDF]

, 2012
We calculate the absolute intensity and anisotropies of the Lyman-alpha radiation field present during the epoch of reionization. We consider emission from both galaxies and the intergalactic medium (IGM) and take into account the main contributions to ...
Asantha Cooray, Barkana, Barkana, Bouwens, Bouwens, Cantalupo, Chen, Chuzhoy, Conroy, Cooray, Davé, Dijkstra, Dijkstra, Dopita, Fan, Fardal, Fernandez, Furlanetto, Gnedin, Gong, Gong, Haardt, Haiman, Hayes, James Bock, Jiang, Kashikawa, Kennicutt, Komatsu, Larson, Lidz, Mario G. Santos, Marta B. Silva, Mesinger, Mesinger, Oesch, Ota, Ota, Ouchi, Ouchi, Pawlik, Pengelly, Razoumov, Shibuya, Shimasaku, Shull, Siana, Smith, Steidel, Taniguchi, Visbal, Wang, Wise, Wyithe, Yan Gong, Zahn, Zaldarriaga, Zheng, Zheng   +58 more
core   +3 more sources