Results 21 to 30 of about 103 (81)

The Lyα Reference Sample. XIV. Lyα Imaging of 45 Low-redshift Star-forming Galaxies and Inferences on Global Emission

The Astrophysical Journal Supplement Series, 2023
We present Ly α 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 (SFRs) using far-ultraviolet (FUV) luminosity and H α equivalent ...
Jens Melinder, Göran Östlin, Matthew Hayes, Armin Rasekh, J. Miguel Mas-Hesse, John M. Cannon, Daniel Kunth, Peter Laursen, Axel Runnholm, E. Christian Herenz, Matteo Messa, Daniel Schaerer, Anne Verhamme, T. Emil Rivera-Thorsen, Lucia Guaita, Thomas Marquart, Johannes Puschnig, Alexandra Le Reste, Andreas Sandberg, Emily Freeland, Joanna Bridge   +20 more
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Extreme equivalent-width-selected low-mass starbursts at z = 4 − 9: Insights into their role in cosmic reionization

Astronomy & Astrophysics
We investigate the properties of extreme emission line galaxies (EELGs) at z = 4 − 9 and their role in reionization. Compact, low-mass galaxies with intense optical emission lines are linked to elevated specific star formation rates (sSFRs) and recent ...
Llerena M., Pentericci L., Amorín R., Ferrara A., Dickinson M., Arevalo-Gonzalez F., Calabrò A., Napolitano L., Mascia S., Arrabal Haro P., Begley R., Cleri N. J., Davis K., Hu W., Kartaltepe J. S., Koekemoer A. M., Lucas R. A., McGrath E., McLeod D. J., Papovich C., Stanton T. M., Taylor A. J., Tripodi R., Wang X., Yung L. Y. A.   +24 more
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Using Lyα Absorption to Measure the Intensity and Variability of z ∼ 2.4 Ultraviolet Background Light

The Astrophysical Journal
We present measurements of z  ∼ 2.4 ultraviolet (UV) background light using Ly α absorption from galaxies at z  ∼ 2–3 in the Hobby–Eberly Telescope Dark Energy Experiment (HETDEX) database.
Laurel H. Weiss, Karl Gebhardt, Dustin Davis, Erin Mentuch Cooper, Maja Lujan Niemeyer, Mahdi Qezlou, Mahan Mirza Khanlari, Robin Ciardullo, Daniel Farrow, Eric Gawiser, Simon Gazagnes, Caryl Gronwall, Gary J. Hill, Donald P. Schneider   +13 more
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MAMMOTH-Subaru. IV. Large Scale Structure and Clustering Analysis of Lyα Emitters and Lyα Blobs at z = 2.2–2.3

The Astrophysical Journal
We report the large scale structure and clustering analysis of Ly α emitters (LAEs) and Ly α blobs (LABs) at z  = 2.2–2.3. Using 3341 LAEs, 117 LABs, and 58 bright (Ly α luminosity L _Ly _α  > 10 ^43.4 erg s ^−1 ) LABs at z  = 2.2–2.3 selected with ...
Haibin Zhang, Zheng Cai, Mingyu Li, Yongming Liang, Nobunari Kashikawa, Ke Ma, Yunjing Wu, Qiong Li, Sean D. Johnson, Satoshi Kikuta, Masami Ouchi, Xiaohui Fan, Yuanhang Ning   +12 more
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Resolving dust and Lyman α emission in a lensed galaxy at the epoch of reionization with JWST/CANUCS

Astronomy & Astrophysics
Context. Lyman α (Lyα) emission is highly sensitive to dust and neutral hydrogen and is believed to be suppressed in dusty or hydrogen-rich galaxies – especially during the epoch of reionization (EoR).
Markov V., Bradač M., Estrada-Carpenter V., Desprez G., Rihtaršič G., Judež J., Tripodi R., Sawicki M., Noirot G., Martis N., Willott C., Abraham R., Asada Y., Brammer G., Matharu J., Muzzin A., Sarrouh G. T. E., Withers S., Ferrara A., Fujimoto S., Gallerani S., Goovaerts I., Harshan A.   +22 more
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The Lyα Dependence on Nebular Properties from the HETDEX and MOSDEF Surveys

The Astrophysical Journal
Investigating the impact of galaxy properties on emergent Ly α emission is crucial for reionization studies, given the sensitivity of Ly α to neutral hydrogen.
Óscar A. Chávez Ortiz, Gene C. K. Leung, Steven L. Finkelstein, Dustin Davis, Ralph S. Sutherland, David C. Nicholls, Mabel Stephenson, Erin Mentuch Cooper, Micaela Bagley, Karl Gebhardt, Lindsay R. House, Chenxu Liu, Robin Ciardullo, Caryl Gronwall, Gary J. Hill, Daniel Farrow, Donald P. Schneider   +16 more
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MAMMOTH-Subaru. III. Lyα Halo Identified by Stacking ∼3300 Lyα Emitters at z = 2.2–2.3

The Astrophysical Journal
In this paper, we present a Ly α halo (LAH) identified by stacking ∼3300 Ly α emitters (LAEs) at z = 2.2–2.3. We carry out imaging observations and data reduction with Subaru/Hyper Suprime-Cam.
Haibin Zhang, Zheng Cai, Yongming Liang, Ke Ma, Nobunari Kashikawa, Mingyu Li, Yunjing Wu, Qiong Li, Sean D. Johnson, Masami Ouchi, Xiaohui Fan   +10 more
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Resolving circumgalactic gas flows around a z  ≈  3.6 quasar using MUSE and ALMA

Astronomy & Astrophysics
The formation and evolution of galaxies is regulated by the exchange of gas with the surrounding large-scale structures on circum- and intergalactic scales, yet little is known about the complex processes shaping the cycle of baryons in and out of ...
Galbiati M., Pensabene A., Cantalupo S., Travascio A., Pezzulli G., Decarli R., Dutta R., Muzahid S., Schaye J., Lazeyras T., Ledos N., Quadri G., Wang W.   +12 more
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An Hα Impression of Lyα Galaxies at z ≃ 6 with Deep JWST/NIRCam Imaging

The Astrophysical Journal Letters, 2023
We present a study of seven spectroscopically confirmed (Ly α -emitting) galaxies at redshift z ≃ 6 using the JWST/NIRCam imaging data. These galaxies, with a wide range of Ly α luminosities, were recently observed in a series of NIRCam broad and medium ...
Yuanhang Ning, Zheng Cai, Linhua Jiang, Xiaojing Lin, Shuqi Fu, Daniele Spinoso   +5 more
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A Survey of Lyα Emission around Damped Lyα Absorbers at z ≈ 2 with the Keck Cosmic Web Imager

The Astrophysical Journal
We present Keck Cosmic Web Imager Ly α integral field spectroscopy of the fields surrounding 14 damped Ly α absorbers (DLAs) at z ≈ 2. Of these 14 DLAs, nine have high metallicities ([M/H] > − 0.3), and four of those nine feature a CO-emitting galaxy at ...
Grecco A. Oyarzún, Marc Rafelski, Nissim Kanekar, J. Xavier Prochaska, Marcel Neeleman, Regina A. Jorgenson   +5 more
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