Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Lyα galaxies"'
Autor:
Anthony Pahl, Alice Shapley, Charles C. Steidel, Naveen A. Reddy, Yuguang Chen, Gwen C. Rudie
Publikováno v:
The Astrophysical Journal, Vol 974, Iss 2, p 212 (2024)
While the shape of the Ly α profile is viewed as one of the best tracers of ionizing-photon escape fraction ( f _esc ) within low-redshift ( z ∼ 0.3) surveys of the Lyman continuum, this connection remains untested at high redshift. Here, we combi
Externí odkaz:
https://doaj.org/article/4f181610f16940c5bf47442b5c8ef762
Testing Lyα Emitters and Lyman-break Galaxies as Tracers of Large-scale Structures at High Redshifts
Autor:
Sang Hyeok Im, Ho Seong Hwang, Jaehong Park, Jaehyun Lee, Hyunmi Song, Stephen Appleby, Yohan Dubois, C. Gareth Few, Brad K. Gibson, Juhan Kim, Yonghwi Kim, Changbom Park, Christophe Pichon, Jihye Shin, Owain N. Snaith, M. Celeste Artale, Eric Gawiser, Lucia Guaita, Woong-Seob Jeong, Kyoung-Soo Lee, Nelson Padilla, Vandana Ramakrishnan, Paulina Troncoso, Yujin Yang
Publikováno v:
The Astrophysical Journal, Vol 972, Iss 2, p 196 (2024)
We test whether Lyα emitters (LAEs) and Lyman-break galaxies (LBGs) can be good tracers of high- z large-scale structures, using the Horizon Run 5 cosmological hydrodynamical simulation. We identify LAEs using the Ly α emission line luminosity and
Externí odkaz:
https://doaj.org/article/36fbd60182d247e4b1e3e1ddf79fe20a
Autor:
Haochen Jiang, Xin Wang, Cheng Cheng, Xu Kong, Qianqiao Zhou, Xiao-Lei Meng, Xianlong He, Tucker Jones, Kristan Boyett
Publikováno v:
The Astrophysical Journal, Vol 972, Iss 1, p 121 (2024)
The detections of Ly α emission in galaxies with redshifts above 5 are of utmost importance for constraining the cosmic reionization timeline, yet such detections are usually based on slit spectroscopy. Here we investigate the significant bias induc
Externí odkaz:
https://doaj.org/article/0330e4925a4d48119db05f62e16e01e8
Autor:
Minami Nakane, Masami Ouchi, Kimihiko Nakajima, Yuichi Harikane, Yoshiaki Ono, Hiroya Umeda, Yuki Isobe, Yechi Zhang, Yi Xu
Publikováno v:
The Astrophysical Journal, Vol 967, Iss 1, p 28 (2024)
We present the evolution of Ly α emission derived from 53 galaxies at z = 6.6–13.2, which have been identified by multiple JWST/NIRSpec spectroscopy programs of Early Release Science, General Observer, Director's Discretionary Time, and Guaranteed
Externí odkaz:
https://doaj.org/article/644d57ab5e6649a19efb871609d95808
Publikováno v:
The Astronomical Journal, Vol 167, Iss 4, p 157 (2024)
The slitless grism on the Nancy Grace Roman Space Telescope will enable deep near-infrared spectroscopy over a wide field of view. We demonstrate Roman's capability to detect Ly α galaxies at z > 7 using a multiple position angle (PA) observational
Externí odkaz:
https://doaj.org/article/5bc9e39a90b84906927eb0368ce4698c
Autor:
Laurel H. Weiss, Dustin Davis, Karl Gebhardt, Simon Gazagnes, Mahan Mirza Khanlari, Erin Mentuch Cooper, John Chisholm, Danielle Berg, William P. Bowman, Chris Byrohl, Robin Ciardullo, Maximilian Fabricius, Daniel Farrow, Caryl Gronwall, Gary J. Hill, Lindsay R. House, Donghui Jeong, Hasti Khoraminezhad, Wolfram Kollatschny, Eiichiro Komatsu, Maja Lujan Niemeyer, Shun Saito, Donald P. Schneider, Gregory R. Zeimann
Publikováno v:
The Astrophysical Journal, Vol 962, Iss 2, p 102 (2024)
The Hobby–Eberly Telescope Dark Energy Experiment (HETDEX) is designed to detect and measure the redshifts of more than 1 million Ly α emitting galaxies (LAEs) 1.88 < z < 3.52. In addition to its cosmological measurements, these data enable studie
Externí odkaz:
https://doaj.org/article/f77a20615e1d4414a60790d841bf920d
Autor:
Grecco A. Oyarzún, Marc Rafelski, Nissim Kanekar, J. Xavier Prochaska, Marcel Neeleman, Regina A. Jorgenson
Publikováno v:
The Astrophysical Journal, Vol 962, Iss 1, p 72 (2024)
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
Externí odkaz:
https://doaj.org/article/62506fe3c0d445f7a459139b74005ead
Autor:
Kyoung-Soo Lee, Eric Gawiser, Changbom Park, Yujin Yang, Francisco Valdes, Dustin Lang, Vandana Ramakrishnan, Byeongha Moon, Nicole Firestone, Stephen Appleby, Maria Celeste Artale, Moira Andrews, Franz Bauer, Barbara Benda, Adam Broussard, Yi-Kuan Chiang, Robin Ciardullo, Arjun Dey, Rameen Farooq, Caryl Gronwall, Lucia Guaita, Yun Huang, Ho Seong Hwang, Sang Hyeok Im, Woong-Seob Jeong, Shreya Karthikeyan, Hwihyun Kim, Seongjae Kim, Ankit Kumar, Gautam R. Nagaraj, Julie Nantais, Nelson Padilla, Jaehong Park, Alexandra Pope, Roxana Popescu, David Schlegel, Eunsuk Seo, Akriti Singh, Hyunmi Song, Paulina Troncoso, A. Katherina Vivas, Ann Zabludoff, Alfredo Zenteno
Publikováno v:
The Astrophysical Journal, Vol 962, Iss 1, p 36 (2024)
We describe the survey design and science goals for One-hundred-deg ^2 DECam Imaging in Narrowbands (ODIN), a NOIRLab survey using the Dark Energy Camera (DECam) to obtain deep (AB ∼ 25.7) narrowband images over an unprecedented area of sky. The th
Externí odkaz:
https://doaj.org/article/13cc97617f9f4d83a4ce42e6ad6ccd9c
Autor:
Ke Ma, Haibin Zhang, Zheng Cai, Yongming Liang, Nobunari Kashikawa, Mingyu Li, Yunjing Wu, Qiong Li, Xiaohui Fan, Sean D. Johnson, Masami Ouchi
Publikováno v:
The Astrophysical Journal, Vol 961, Iss 1, p 102 (2024)
Cosmic variance introduces significant uncertainties into galaxy number density properties when surveying the high-redshift Universe with a small volume. Such uncertainties produce the field-to-field variance σ _g of galaxy numbers in observational
Externí odkaz:
https://doaj.org/article/670fb4ab2dfb4a04940ac7a7b04b0b14
Autor:
Haibin Zhang, Zheng Cai, Yongming Liang, Ke Ma, Nobunari Kashikawa, Mingyu Li, Yunjing Wu, Qiong Li, Sean D. Johnson, Masami Ouchi, Xiaohui Fan
Publikováno v:
The Astrophysical Journal, Vol 961, Iss 1, p 63 (2024)
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. Our total survey area is ∼12 deg ^2 and the imag
Externí odkaz:
https://doaj.org/article/f26b49b1432e41e797a4ccde6d26728f