Results 81 to 90 of about 182 (139)

CECILIA: Ultradeep Rest-optical Spectra of Faint Galaxies at Cosmic Noon

The Astrophysical Journal Letters
Intrinsically faint galaxies at z  ∼ 2–3 offer critical insights into early galaxy formation, tracing low-metallicity, low-mass systems during cosmic noon and serving as analogs to reionization-era galaxies. We present ultradeep JWST/NIRSpec spectroscopy
Menelaos Raptis, Ryan F. Trainor, Allison L. Strom, Gwen C. Rudie, Noah S. J. Rogers, Charles C. Steidel, Michael V. Maseda, Caroline von Raesfeld, Nathalie A. Korhonen Cuestas   +8 more
doaj   +1 more source

Constraining Reionization with Lyman Alpha Emitting Galaxies

, 2015
17 pages, 6 figures. Book chapter in "Understanding the Epoch of Cosmic Reionization: Challenges and Progress", Springer International Publishing, Ed.
openaire   +2 more sources

On the sizes of z>2 Damped Lyman-alpha Absorbing Galaxies

, 2012
Accepted for publishing in MNRAS ...
Krogager, J. -K., Fynbo, J. P. U., Møller, P., Ledoux, C., Noterdaeme, P., Christensen, L., Milvang-Jensen, B., Sparre, M.   +7 more
openaire   +2 more sources

Connecting Lyα and Ionizing Photon Escape in the Sunburst Arc

The Astrophysical Journal
We investigate the Ly α and Lyman continuum (LyC) properties of the Sunburst Arc, a z = 2.37 gravitationally lensed galaxy with a multiply imaged, compact region leaking LyC and a triple-peaked Ly α profile indicating direct Ly α escape.
M. Riley Owens, Keunho J. Kim, Matthew B. Bayliss, T. Emil Rivera-Thorsen, Keren Sharon, Jane R. Rigby, Alexander Navarre, Michael Florian, Michael D. Gladders, Jessica G. Burns, Gourav Khullar, John Chisholm, Guillaume Mahler, Håkon Dahle, Christopher M. Malhas, Brian Welch, Taylor A. Hutchison, Raven Gassis, Suhyeon Choe, Prasanna Adhikari, Sloan Giant Arcs Survey   +20 more
doaj   +1 more source

JWST Unveils the Bimodal Nature of Lyα Emitters at 3 < z < 7: Pristine versus Merger-driven Populations

The Astrophysical Journal
We present a systematic study of merging galaxies among Lyα emitters (LAEs) using James Webb Space Telescope/NIRCam high-resolution imaging data. From a large sample of 817 spectroscopically confirmed LAEs at 3  6 to 70% at z  
Jian Ren, F. S. Liu, Nan Li, Qi Song, Pinsong Zhao, Qifan Cui, Yubin Li, Hao Mo, Guanghuan Wang, Hassen M. Yesuf, Weichen Wang   +10 more
doaj   +1 more source

CLASSY. XI. Tracing Neutral Gas Properties Using UV Absorption Lines and 21 cm Observations

The Astrophysical Journal
Rest-frame far-ultraviolet (FUV) observations from JWST are revolutionizing our understanding of the high- z galaxies that drove reionization and the mechanisms by which they accomplished it.
Kaelee S. Parker, Danielle A. Berg, Simon Gazagnes, John Chisholm, Bethan L. James, Matthew Hayes, Timothy Heckman, Alaina Henry, Michelle A. Berg, Karla Z. Arellano-Córdova, Xinfeng Xu, Dawn K. Erb, Crystal L. Martin, Weida Hu, Evan D. Skillman, Kristen B. W. McQuinn, Zuyi Chen, Dan P. Stark   +17 more
doaj   +1 more source

The Lyα and Continuum Origins Survey. I. Survey Description and Lyα Imaging

The Astrophysical Journal Supplement Series
Understanding the mechanisms driving the escape of ionizing or Lyman continuum (LyC) emission from the interstellar medium of galaxies is necessary to constrain the evolution of reionization and the sources responsible for it.
Alexandra Le Reste, Claudia Scarlata, Matthew J. Hayes, Jens Melinder, Alberto Saldana-Lopez, Aaron Smith, Axel Runnholm, Yu-Heng Lin, Ricardo O. Amorín, Hakim Atek, Sanchayeeta Borthakur, Cody A. Carr, Brian Fleming, Sophia R. Flury, Mauro Giavalisco, Alaina Henry, Anne E. Jaskot, Zhiyuan Ji, Intae Jung, Floriane Leclercq, Rui Marques-Chaves, Stephan R. McCandliss, M. S. Oey, Göran Östlin, Swara Ravindranath, Daniel Schaerer, Trinh X. Thuan, Xinfeng Xu   +27 more
doaj   +1 more source

On the Physical Nature of Lyα Transmission Spikes in High-redshift Quasar Spectra

The Astrophysical Journal
We investigate Lyman-alpha (Ly α ) transmission spikes at 5.2 < z < 6.8 using synthetic quasar spectra from the “Cosmic Reionization on Computers” simulations.
Hanjue Zhu, Nickolay Y. Gnedin, Camille Avestruz   +2 more
doaj   +1 more source

Design For The First Narrowband Filter For The Dark Energy Camera: Optimizing The LAGER Survey For Z ~ 7 Galaxies. [PDF]

Publ Astron Soc Pac, 2019
Zheng ZY, Rhoads JE, Wang J, Malhotra S, Walker A, Mooney T, Jiang C, Hu W, Hibon P, Jiang L, Infante L, Barrientos LF, Galaz G, Valdes F, Wester W, Yang H, Coughlin A, Harish S, Kang W, Khostovan AA, Kong X, Perez LA, Pharo J, Wold I, Zheng X.   +24 more
europepmc   +1 more source

SILVERRUSH. XIV. Lyα Luminosity Functions and Angular Correlation Functions from 20,000 Lyα Emitters at z ∼ 2.2–7.3 from up to 24 deg2 HSC-SSP and CHORUS Surveys: Linking the Postreionization Epoch to the Heart of Reionization

The Astrophysical Journal Supplement Series
We present luminosity functions (LFs) and angular correlation functions (ACFs) derived from 18,960 Ly α emitters (LAEs) at z  = 2.2−7.3 over a wide survey area of ≲24 deg ^2 that are identified in the narrowband data of the HSC-SSP and CHORUS surveys ...
Hiroya Umeda, Masami Ouchi, Satoshi Kikuta, Yuichi Harikane, Yoshiaki Ono, Takatoshi Shibuya, Akio K. Inoue, Kazuhiro Shimasaku, Yongming Liang, Akinori Matsumoto, Shun Saito, Haruka Kusakabe, Yuta Kageura, Minami Nakane   +13 more
doaj   +1 more source