Results 31 to 40 of about 182 (139)

HOW LYMAN ALPHA EMISSION DEPENDS ON GALAXY STELLAR MASS [PDF]

The Astrophysical Journal Letters, 2016
ABSTRACT In this work, we show how the stellar mass (M *) of galaxies affects the 3 < z < 4.6 Lyα equivalent width (EW) distribution. To this end, we design a sample of 629 galaxies in the M * range from the ...
Grecco A. Oyarzún, Guillermo A. Blanc, Valentino González, Mario Mateo, John I. Bailey III, Steven L. Finkelstein, Paulina Lira, Jeffrey D. Crane, Edward W. Olszewski   +8 more
openaire   +3 more sources

Chemodynamics of Lyman alpha emitters, Lyman break galaxies and elliptical galaxies [PDF]

EAS Publications Series, 2007
We report an ultra-high-resolution simulation that follows evolution from the earliest stages of galaxy formation through the period of dynamical relaxation. The bubble structures of gas revealed in our simulation ($< 3\times 10^8$ years) resemble closely the high-redshift Lyman $α$ emitters (LAEs).
Mori, Masao, Umemura, Masayuki
openaire   +2 more sources

The Magellan M2FS Spectroscopic Survey of High-redshift Galaxies: The Brightest Lyman-break Galaxies at z ∼ 6

The Astrophysical Journal
We present a study of a sample of 45 spectroscopically confirmed, UV luminous galaxies at z ∼ 6. They were selected as bright Lyman-break galaxies (LBGs) using deep multiband optical images in more than 2 deg ^2 of the sky, and subsequently identified ...
Shuqi Fu, Linhua Jiang, Yuanhang Ning, Weiyang Liu, Zhiwei Pan   +4 more
doaj   +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=0.2648 with a velocity dispersion of 163 km/s.
Ortiz-Gil, A., Lanzetta, K. M., Webb, J. K., Barcons, X., Fernandez-Soto, A.   +4 more
openaire   +2 more sources

MIDIS: JWST NIRCam and MIRI Unveil the Stellar Population Properties of Lyα Emitters and Lyman-break Galaxies at z ≃ 3–7

The Astrophysical Journal
We study the stellar population properties of 182 spectroscopically confirmed (MUSE/VLT) Ly α emitters (LAEs) and 450 photometrically selected Lyman-break galaxies (LBGs) at z = 2.8–6.7 in the Hubble Extreme Deep Field.
Edoardo Iani, Karina I. Caputi, Pierluigi Rinaldi, Marianna Annunziatella, Leindert A. Boogaard, Göran Östlin, Luca Costantin, Steven Gillman, Pablo G. Pérez-González, Luis Colina, Thomas R. Greve, Gillian Wright, Almudena Alonso-Herrero, Javier Álvarez-Márquez, Arjan Bik, Sarah E. I. Bosman, Alejandro Crespo Gómez, Andreas Eckart, Jens Hjorth, Iris Jermann, Alvaro Labiano, Danial Langeroodi, Jens Melinder, Thibaud Moutard, Florian Peißker, John P. Pye, Tuomo V. Tikkanen, Paul P. van der Werf, Fabian Walter, Thomas K. Henning, Pierre-Olivier Lagage, Ewine F. van Dishoeck   +31 more
doaj   +1 more source

A GLIMPSE into the very faint end of the Hβ+[O III]λλ4960,5008 luminosity function at z ∼ 7 – 9 behind Abell S1063

Astronomy & Astrophysics
We used the ultra-deep GLIMPSE JWST/NIRCam survey to constrain the faint end of the [O III]+Hβ luminosity function (LF) down to 1039erg s−1 at z ∼ 7 − 9 behind the lensed Hubble Frontier Field galaxy cluster Abell S1063.
Korber Damien, Chemerynska Iryna, Furtak Lukas J., Atek Hakim, Endsley Ryan, Schaerer Daniel, Chisholm John, Kokorev Vasily, Saldana-Lopez Alberto, Adamo Angela, Muñoz Julian B., Oesch Pascal A., Meyer Romain, Marques-Chaves Rui, Fujimoto Seiji   +14 more
doaj   +1 more source

Lyman-alpha absorbers arising in galaxy clusters

, 1997
2 pages, 2 figures, to appear in the proceedings of the 13th IAP Conference on "Evolution of the Intergalactic Medium From QSO Absorption Line Systems"
Ortiz-Gil, A., Lanzetta, K. M., Webb, J. K., Barcons, X.   +3 more
openaire   +2 more sources

The Galaxy Proximity Effect in the Lyman-alpha Forest

, 2002
Hydrodynamic cosmological simulations predict that the average opacity of the Ly-alpha forest should increase in the neighborhood of galaxies because galaxies form in dense environments. Recent observations (Adelberger et al. 2002) confirm this expectation at large scales, but they show a decrease of absorption at comoving separations Delta_r ~ 1 Mpc/h
Kollmeier, Juna A., Weinberg, David H., Dave', Romeel, Katz, Neal   +3 more
openaire   +2 more sources

The JWST/PASSAGE Survey: Testing Reionization Histories with JWST’s First Unbiased Survey for Lyα Emitters at Redshifts 7.5–9.5

The Astrophysical Journal
Ly α emission is one of a few observable features of galaxies that can trace the neutral hydrogen content in the Universe during the Epoch of Reionization (EoR). To accomplish this, we need an efficient way to survey for Ly α emitters (LAEs) at redshifts
Axel Runnholm, Matthew J. Hayes, Vihang Mehta, Matthew A. Malkan, Claudia Scarlata, Kalina V. Nedkova, Marc Rafelski, Benedetta Vulcani, Mason Huberty, E. Christian Herenz, Anne Hutter, Sean Bruton, Ayan Acharyya, Hakim Atek, Ivano Baronchelli, Andrew J. Battisti, Maruša Bradač, Andrew J. Bunker, Y. Sophia Dai, Clea Hannahs, Farhanul Hasan, Keunho J. Kim, Nicha Leethochawalit, Yu-Heng Lin, Michael J. Rutkowski, Alberto Saldana-Lopez, Zahra Sattari, Xin Wang   +27 more
doaj   +1 more source

The Impact of Cosmic Variance on Inferences of Global Neutral Fraction Derived from Lyα Luminosity Functions during Reionization

The Astrophysical Journal, 2023
We investigate the impact of field-to-field variation, deriving from cosmic variance, in measured Ly α emitter (LAE) luminosity functions (LFs) and this variation’s impact on inferences of the neutral fraction of the intergalactic medium (IGM) during ...
Sean Bruton, Claudia Scarlata, Francesco Haardt, Matthew J. Hayes, Charlotte Mason, Alexa M. Morales, Andrei Mesinger   +6 more
doaj   +1 more source