14 papers · ranked by Valyu relevance
J. A. Hodge, E. da Cunha
The Atacama Large Millimetre/submillimetre Array (ALMA) is currently in the process of transforming our view of star-forming galaxies in the distant ( $z≳1$) universe. Before ALMA, most of what we knew about dust-obscured star formation in distant galaxies was limited to the brightest submillimetre sources-the…
Jeff Cooke, E. V. Ryan‐Weber, Thibault Garel, C. Díaz
Lyman break galaxies (LBGs) at z ∼ 3–4 are targeted to measure the fraction of Lyman continuum (LyC) flux that escapes from high redshift galaxies. However, z ∼ 3–4 LBGs are identified using the Lyman break technique which preferentially selects galaxies with little or no LyC. We re-examine the standard LBG selection…
Andrea Prestwich, Floyd Jackson, P. Kaaret, Matthew Brorby + 3 more
'T. P. Roberts' 'Steven H. Saar' 'Mihoko Yukita'] Lyman Break Analogs (LBA) are local proxies of high-redshift Lyman Break Galaxies (LBG). Spatially resolved studies of nearby starbursts have shown that Lyman continuum and line emission are absorbed by dust and that the Lyα is resonantly scattered by neutral hydrogen.…
Bingjie Wang, Timothy M. Heckman, Claus Leitherer, Rachel Alexandroff + 2 more
'Rachel Alexandroff' 'Sanchayeeta Borthakur' 'Roderik Overzier'] The source responsible for the reionization of the Universe is believed to be the population of starforming galaxies at z ∼ 6 to 12. The biggest uncertainty concerns the fraction of Lyman-continuum photons that actually escape from the galaxies. In recent…
Michael Rauch
Known populations of QSOs appear to fall short of producing the ionizing flux required for re-ionizing the universe. The alternative, galaxies as sources of ionizing photons, suffers from the problem that known types of galaxies are almost completely opaque to ionizing photons. For reionization to happen, either large…
R. Begley, Fergus Cullen, R. J. McLure, A. E. Shapley + 6 more
'A. C. Carnall' 'D. J. McLeod' 'C. T. Donnan' 'M. L. Hamadouche' 'T. M. Stanton'] We present a study of the connection between the escape fraction of Lyman-alpha (Ly ) and Lyman-continuum (LyC) photons within a sample of = 152 star-forming galaxies selected from the VANDELS survey at 3.85 ≤ spec ≤ 4.95 (⟨spec⟩ = 4.36).…
Peter Laursen
Timescales in astronomy comprise the largest range of any scientific discipline. In the construction of physical models, this circumstance may both be a blessing and a curse. For example, galaxy evolution occurs on typical timescales of hundreds of millions of years, but is affected by atomic processes on sub-second…
Michael Boylan-Kolchin
Early data from the James Webb Space Telescope (JWST) have revealed a bevy of high-redshift galaxy candidates with unexpectedly high stellar masses. An immediate concern is the consistency of these candidates with galaxy formation in the standard ΛCDM cosmological model, wherein the stellar mass (M⋆) of a galaxy is…
Ketron Mitchell-Wynne, Asantha Cooray, Yan Gong, Matthew Ashby + 8 more
'Timothy Dolch' 'Henry Ferguson' 'Steven Finkelstein' 'Norman Grogin' 'Dale Kocevski' 'Anton Koekemoer' 'Joel Primack' 'Joseph Smidt'] The spatial fluctuations of the extragalactic background light trace the total emission from all stars and galaxies in the Universe. A multiwavelength study can be used to measure the…
James E. Rhoads, Sangeeta Malhotra, Mark L. A. Richardson, Steven L. Finkelstein + 3 more
'Steven L. Finkelstein' 'J. P. U. Fynbo' 'Emily McLinden' 'Vithal Tilvi'] We present the first dynamical mass measurements for Lyman-α galaxies at high redshift, based on velocity dispersion measurements from rest-frame optical emission lines and size measurements from HST imaging, for a sample of nine galaxies drawn…
Cosmin Ilie, Jillian Paulin, Katherine Freese
Title: Significance In 2007, we proposed the idea of Dark Stars. The first phase of stellar evolution in the history of the universe may be Dark Stars (DS), powered by dark matter (DM) heating rather than by nuclear fusion. Although made almost entirely of hydrogen and helium from the Big Bang, they form at the centers…
M. Ginolfi, E. Piconcelli, L. Zappacosta, G. C. Jones + 17 more
'L. Pentericci' 'R. Maiolino' 'A. Travascio' 'N. Menci' 'S. Carniani' 'F. Rizzo' 'F. Arrigoni Battaia' 'S. Cantalupo' 'C. De Breuck' 'L. Graziani' 'K. Knudsen' 'P. Laursen' 'V. Mainieri' 'R. Schneider' 'F. Stanley' 'R. Valiante' 'A. Verhamme'] The phase transition between galaxies and quasars is often identified with…
Joris Witstok, Irene Shivaei, Renske Smit, Roberto Maiolino + 38 more
'Stefano Carniani' 'Emma Curtis-Lake' 'Pierre Ferruit' 'Santiago Arribas' 'Andrew J. Bunker' 'Alex J. Cameron' 'Stephane Charlot' 'Jacopo Chevallard' 'Mirko Curti' 'Anna de Graaff' 'Francesco D’Eugenio' 'Giovanna Giardino' 'Tobias J. Looser' 'Tim Rawle' 'Bruno Rodríguez del Pino' 'Chris Willott' 'Stacey Alberts'…
Themiya Nanayakkara, Karl Glazebrook, Colin Jacobs, Lalitwadee Kawinwanichakij + 12 more
\usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$3<z<4$$\end{document} 3 < z < 4 revealed by JWST NIRSpec Spectroscopy Authors: ['Themiya Nanayakkara' 'Karl Glazebrook'…