Results 81 to 90 of about 8,368 (167)

Evidence for Spatially Compact Lyman Alpha Emission in z=3.1 Lyman-Alpha-Emitting Galaxies

, 2010
We present the results of a high-spatial-resolution study of the line emission in a sample of z=3.1 Lyman-Alpha-Emitting Galaxies (LAEs) in the Extended Chandra Deep Field-South. Of the eight objects with coverage in our HST/WFPC2 narrow-band imaging, two have clear detections and an additional two are barely detected (~2-sigma).
Bond, Nicholas A., Feldmeier, John J., Matkovic, Ana, Gronwall, Caryl, Ciardullo, Robin, Gawiser, Eric   +5 more
openaire   +2 more sources

ODIN: Probing the LAE Lyα Luminosity Function across Cosmic Time and Different Environments

The Astrophysical Journal
The ubiquity and relative ease of discovery make 2 ≲  z  ≲ 5 Ly α emitting galaxies (LAEs) ideal tracers for large-scale structure of the distant Universe.
Gautam Nagaraj, Robin Ciardullo, Caryl Gronwall, Vandana Ramakrishnan, Kyoung-Soo Lee, Eric Gawiser, Nicole Firestone, Govind Ramgopal, J. Aguilar, S. Ahlen, D. Bianchi, D. Brooks, F. J. Castander, T. Claybaugh, A. Cuceu, A. de la Macorra, Arjun Dey, Biprateep Dey, P. Doel, J. E. Forero-Romero, E. Gaztañaga, S. Gontcho A Gontcho, G. Gutierrez, H. K. Herrera-Alcantar, K. Honscheid, M. Ishak, R. Kehoe, D. Kirkby, T. Kisner, A. Kremin, M. Landriau, L. Le Guillou, M. E. Levi, C. Magneville, M. Manera, P. Martini, A. Meisner, R. Miquel, J. Moustakas, N. Palanque-Delabrouille, F. Prada, I. Pérez-Ràfols, G. Rossi, L. Samushia, E. Sanchez, D. Schlegel, M. Schubnell, H. Seo, J. Silber, D. Sprayberry, G. Tarlé, F. Valdes, B. A. Weaver, M. White, R. Zhou, H. Zou   +55 more
doaj   +1 more source

Spectroscopic detection of CIV in a galaxy at z=7.045: Implications for the ionizing spectra of reionization-era galaxies

, 2015
We present Keck/MOSFIRE observations of UV metal lines in four bright gravitationally-lensed z~6-8 galaxies behind the cluster Abell 1703. The spectrum of A1703-zd6, a highly-magnified star forming galaxy with a Lyman-alpha redshift of z=7.045, reveals a
Charlot, Stephane, Clement, Benjamin, Feltre, Anna, Gutkin, Julia, Mainali, Ramesh, Richard, Johan, Robertson, Brant, Schenker, Matthew, Siana, Brian, Stark, Daniel P., Tang, Mengtao, Walth, Gregory   +11 more
core   +3 more sources

Lyα Nebulae in HETDEX: The Largest Statistical Census Bridging Lyα Halos and Blobs across Cosmic Noon

The Astrophysical Journal
The Hobby–Eberly Dark Energy Experiment (HETDEX) is an untargeted ∼540 deg ^2 spectroscopic survey of Ly α emission in the 1.9 
Erin Mentuch Cooper, Karl Gebhardt, Dustin Davis, Robin Ciardullo, Chris Byrohl, Chenxu Liu, Maya H. Debski, Óscar A. Chávez Ortiz, Maximilian Fabricius, Daniel J. Farrow, Steven L. Finkelstein, Caryl Gronwall, Gary J. Hill, Maja Lujan Niemeyer, Brianna McKay, Shiro Mukae, Masami Ouchi, Huub Röttgering, Donald P. Schneider, Sarah Tuttle, Lutz Wisotzki, Gregory Zeimann, Sai Zhai   +22 more
doaj   +1 more source

HST Images of a Galaxy Group at z=2.81, and the Sizes of Damped Lyman Alpha Galaxies

, 1998
We present HST WFPC2 observations in three bands (F450W, F467M and F814W) of a group of three galaxies at z=2.8 discovered in a ground-based narrow-band search for Lyman alpha emission near the z=2.8 quasar PKS0528-250.
Moller, Palle, Warren, Stephen J.
core   +1 more source

Properties of Low-Redshift Damped Lyman Alpha Galaxies

, 2001
8 pages, 6 figures, uses newpasp.sty. To appear in ASP Conference Series "Extragalactic Gas at Low Redshift", J. Mulchaey and J.
Nestor, Daniel B., Rao, Sandhya M., Turnshek, David A., Monier, Eric, Lane, Wendy, Bergeron, Jacqueline   +5 more
openaire   +2 more sources

Peering into the dark (ages) with low-frequency space interferometers: Using the 21-cm signal of neutral hydrogen from the infant universe to probe fundamental (Astro)physics. [PDF]

Exp Astron (Dordr), 2021
Koopmans LVE, Barkana R, Bentum M, Bernardi G, Boonstra AJ, Bowman J, Burns J, Chen X, Datta A, Falcke H, Fialkov A, Gehlot B, Gurvits L, Jelić V, Klein-Wolt M, Lazio J, Meerburg D, Mellema G, Mertens F, Mesinger A, Offringa A, Pritchard J, Semelin B, Subrahmanyan R, Silk J, Trott C, Vedantham H, Verde L, Zaroubi S, Zarka P.   +29 more
europepmc   +1 more source

Neutral gas in Lyman-alpha emitting galaxies Haro 11 and ESO 338-IG04 measured through sodium absorption

, 2013
Context. The Lyman alpha emission line of galaxies is an important tool for finding galaxies at high redshift, and thus probe the structure of the early universe.
Fathi, K., Hayes, M., Mas-Hesse, J. M., Rivera-Thorsen, T., Sandberg, A., Schaerer, D., Östlin, G.   +6 more
core   +1 more source

The gaseous extent of galaxies and the origin of Lyman alpha absorption systems. IV: Lyman alpha absorbers arising in a galaxy group

, 1999
We present new GHRS observations of Lyman alpha absorption lines associated with a group of galaxies towards the QSO 1545+2101. We have identified eight distinct Lyman alpha absorption features in the spectrum of QSO 1545+2101 at a mean redshift of z=0 ...
Barcons, X., Fernandez-Soto, A., Lanzetta, K. M., Ortiz-Gil, A., Webb, J. K.   +4 more
core   +1 more source

Transfert radiatif Lyman-alpha dans les galaxies

, 2008
Pour étudier la formation et l'évolution des Galaxies, nous avons développé un code de transfert radiatif des photons Lyman-alpha à travers le milieu interstellaire d'une galaxie, MCLya. Emise par les atomes d'hydrogènes excités, cette raie de résonnance est altérée par les diffusions multiples qu'elle subit sur le gaz neutre et la poussière ...
openaire   +2 more sources