Results 61 to 70 of about 14,388 (158)

MAMMOTH-Subaru. V. Effects of Cosmic Variance on Lyα Luminosity Functions at z = 2.2–2.3

The Astrophysical Journal
Cosmic variance introduces significant uncertainties into galaxy number density properties when surveying the high-redshift Universe with a small volume.
Ke Ma, Haibin Zhang, Zheng Cai, Yongming Liang, Nobunari Kashikawa, Mingyu Li, Yunjing Wu, Qiong Li, Xiaohui Fan, Sean D. Johnson, Masami Ouchi   +10 more
doaj   +1 more source

The Lyman Alpha Reference Sample: V. The impact of neutral ISM kinematics and geometry on Lyman Alpha escape

, 2015
We present high-resolution far-UV spectroscopy of the 14 galaxies of the Lyman Alpha Reference Sample; a sample of strongly star-forming galaxies at low redshifts ($0.028 < z < 0.18$).
Adamo, Angela, Atek, Hakim, Cannon, John M., Duval, Florent, Guaita, Lucia, Hayes, Matthew, Herenz, E. Christian, Kunth, Daniel, Laursen, Peter, Mas-Hesse, J. Miguel, Melinder, Jens, Orlitová, Ivana, Otí-Floranes, Héctor, Rivera-Thorsen, Thøger E., Sandberg, Andreas, Schaerer, Daniel, Verhamme, Anne, Östlin, Göran   +17 more
core   +3 more sources

Lyα Emission at z = 7–13: Clear Evolution of Lyα Equivalent Width Indicating a Late Cosmic Reionization History

The Astrophysical Journal
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 Time ...
Minami Nakane, Masami Ouchi, Kimihiko Nakajima, Yuichi Harikane, Yoshiaki Ono, Hiroya Umeda, Yuki Isobe, Yechi Zhang, Yi Xu   +8 more
doaj   +1 more source

The Lyα Nondetection by JWST NIRSpec of a Strong Lyα Emitter at z = 5.66 Confirmed by MUSE

The Astrophysical Journal
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 induced by
Haochen Jiang, Xin Wang, Cheng Cheng, Xu Kong, Qianqiao Zhou, Xiao-Lei Meng, Xianlong He, Tucker Jones, Kristan Boyett   +8 more
doaj   +1 more source

Lyman-alpha line and continuum radiative transfer in a clumpy interstellar medium

, 2013
Aims: We aim to study the effects of an inhomogeneous interstellar medium (ISM) on the strength and the shape of the Lyman alpha (Lya) line in starburst galaxies.
Duval, Florent, Laursen, Peter, Schaerer, Daniel, Östlin, Göran   +3 more
core   +1 more source

Lyα Radiative Transfer Modeling for 163 MUSE Lyα-emitting Galaxies at z = 3–6

The Astrophysical Journal
We utilized Ly α radiative transfer calculations from H. Song et al. to investigate the properties of extended Ly α halos around star-forming galaxies in the Hubble Ultra Deep Field, observed by the Multi-Unit Spectroscopic Explorer.
Sangeun Yu, Hyunmi Song, Kwang-Il Seon
doaj   +1 more source

The cool side of Lyman Alpha Emitters

, 2009
We extend a previous study of Lyman Alpha Emitters (LAEs) based on hydrodynamical cosmological simulations, by including two physical processes important for LAEs: (a) Lyman Alpha and continuum luminosities produced by cooling of collisionally excited HI
Alexandro Saro, Anderson, Andrea Ferrara, Atek, Atek, Bianchi, Bolton, Cen, Dawson, Dayal, Deharveng, Dijkstra, Dijkstra, Dijkstra, Dijkstra, Dwek, Ferrara, Finkelstein, Gallerani, Gnedin, Gronwall, Haardt, Hansen, Kashikawa, Kobayashi, Komatsu, Lai, Leitherer, Lisenfeld, Maiolino, Mao, McKee, McQuade, McQuinn, Mori, Mori, Murayama, Neufeld, Nozawa, Nozawa, Osterbrock, Ouchi, Padovani, Pratika Dayal, Salpeter, Santos, Saro, Seab, Seaton, Shimasaku, Spitzer, Springel, Springel, Springel, Storchi-Bergmann, Stratta, Todini, Tornatore, Valiante, van den Hoek, Verhamme, Woosley   +61 more
core   +1 more source

The Mean Ultraviolet Spectrum of a Representative Sample of Faint z~3 Lyman Alpha Emitters [PDF]

, 2018
We discuss the rest-frame ultraviolet emission line spectra of a large (~100) sample of low luminosity redshift z~3.1 Lyman alpha emitters (LAEs) drawn from a Subaru imaging survey in the SSA22 survey field.
Ellis, Richard S., Fletcher, Thomas, Iwata, Ikuru, Nakajima, Kimihiko, Robertson, Brant E.   +4 more
core   +2 more sources

Census of Lyα Emission from ∼600 Galaxies at z = 5–14: Evolution of the Lyα Luminosity Function and a Late Sharp Cosmic Reionization

The Astrophysical Journal Supplement Series
We present the statistical properties of Ly α emission in 586 galaxies at z  = 4.5–14.2, observed by multiple JWST/NIRSpec spectroscopy projects, including the JADES, GLASS, CEERS, and GO/DDT programs.
Yuta Kageura, Masami Ouchi, Minami Nakane, Hiroya Umeda, Yuichi Harikane, Shintaro Yoshiura, Kimihiko Nakajima, Hidenobu Yajima, Tran Thi Thai   +8 more
doaj   +1 more source

A deep X-ray look to the most obscured quasar at z  ∼  3.6 and its environment

Astronomy & Astrophysics
Context. The most luminous and obscured quasars (QSOs) detected through sensitive infrared all-sky surveys are thought to represent a key co-evolutionary phase from nuclear to circumgalactic (CG) scales in the formation of massive galaxies.
Villani I., Zappacosta L., Piconcelli E., Ginolfi M., Ricci F., La Franca F., Arrigoni-Battaia F., Bongiorno A., Cantalupo S., Carniani S., Civano F., Comastri A., Fiore F., Maiolino R., Pentericci L., Ricci C., Schneider R., Valiante R., Vignali C., Vito F.   +19 more
doaj   +1 more source