Results 11 to 20 of about 14,388 (158)

Spectroscopic confirmation of two luminous galaxies at a redshift of 14. [PDF]

Nature
Carniani S, Hainline K, D'Eugenio F, Eisenstein DJ, Jakobsen P, Witstok J, Johnson BD, Chevallard J, Maiolino R, Helton JM, Willott C, Robertson B, Alberts S, Arribas S, Baker WM, Bhatawdekar R, Boyett K, Bunker AJ, Cameron AJ, Cargile PA, Charlot S, Curti M, Curtis-Lake E, Egami E, Giardino G, Isaak K, Ji Z, Jones GC, Kumari N, Maseda MV, Parlanti E, Pérez-González PG, Rawle T, Rieke G, Rieke M, Del Pino BR, Saxena A, Scholtz J, Smit R, Sun F, Tacchella S, Übler H, Venturi G, Williams CC, Willmer CNA.   +44 more
europepmc   +2 more sources

A Spectroscopic Survey of Lyα Emitters and Lyα Luminosity Function at Redshifts 3.7 and 4.8

The Astrophysical Journal, 2023
We present a spectroscopic survey of Ly α emitters (LAEs) at z ∼ 3.7 and z ∼ 4.8. The LAEs are selected using the narrowband technique based on the combination of deep narrowband and broadband imaging data in two deep fields, and then spectroscopically ...
Weiyang Liu, Linhua Jiang
doaj   +1 more source

The Lyman alpha reference sample. VII. Spatially resolved H$\alpha$ kinematics [PDF]

, 2015
We present integral field spectroscopic observations with the Potsdam Multi Aperture Spectrophotometer of all 14 galaxies in the $z\sim 0.1$ Lyman Alpha Reference Sample (LARS).
Adamo, Angela, Atek, Hakim, Bik, Arjan, Cannon, John M., Duval, Florent, Gruyters, Pieter, Guaita, Lucia, Hayes, Matthew, Herenz, Edmund Christian, Kunth, Daniel, Laursen, Peter, Mas-Hesse, J. Miguel, Melinder, Jens, Orlitova, Ivana, Otí-Floranes, Héctor, Pardy, Stephen, Puschnig, Johannes, Rivera-Thorsen, Thøger E., Roth, Martin M., Schaerer, Daniel, Verhamme, Anne, Östlin, Göran   +21 more
core   +5 more sources

Evolution of the Lyman-alpha Halos around High-Redshift Radio Galaxies [PDF]

, 2009
We have obtained the first constraints on extended Ly-alpha emission at z ~ 1 in a sample of five radio galaxies. We detect Ly-alpha emission from four of the five galaxies.
Andrew W. Zirm, Arjun Dey, Bennett, Colin J. Norman, Crawford, De Breuck, Dekel, Dey, Dey, Dijkstra, Dijkstra, Haiman, Mark Dickinson, Matsuda, Meurer, Reuland, Saito, Scharf, Seymour, Spinrad, Steidel, Telfer, Vanden Berk, Villar-Martín, Zirm, Zirm, Zirm, Zirm   +27 more
core   +1 more source

Delayed Massive-star Mechanical Feedback at Low Metallicity

The Astrophysical Journal, 2023
The classical model of massive-star mechanical feedback is based on effects at solar metallicity ( Z _⊙ ), yet feedback parameters are very different at low metallicity.
Michelle C. Jecmen, M. S. Oey
doaj   +1 more source

The Lyman‐α Sky Background as Observed by New Horizons

Geophysical Research Letters, Volume 45, Issue 16, Page 8022-8028, 28 August 2018., 2018
Abstract Recent observations of interplanetary medium atomic hydrogen Lyman‐α emission in the outer solar system, made with the Alice ultraviolet spectrograph on New Horizons, are presented. The observations include regularly spaced great circle scans of the sky and pointed observations near the downstream and upstream flow directions of interstellar H
G. Randall Gladstone, W. R. Pryor, S. Alan Stern, Kimberly Ennico, Catherine B. Olkin, John R. Spencer, Harold A. Weaver, Leslie A. Young, Fran Bagenal, Andrew F. Cheng, Nathaniel J. Cunningham, Heather A. Elliott, Thomas K. Greathouse, David P. Hinson, Joshua A. Kammer, Ivan R. Linscott, Joel Wm. Parker, Kurt D. Retherford, Andrew J. Steffl, Darrell F. Strobel, Michael E. Summers, Henry Throop, Maarten H. Versteeg, Michael W. Davis   +23 more
wiley   +1 more source

On the dependence between UV luminosity and Lyman-alpha equivalent width in high redshift galaxies [PDF]

, 2009
We show that with the simple assumption of no correlation between the Ly-alpha equivalent width and the UV luminosity of a galaxy, the observed distribution of high redshift galaxies in an equivalent width - absolute UV magnitude plane can be reproduced.
A. E. Shapley, Ando, Ando, Bunker, Cowie, Deharveng, Dijkstra, Finkelstein, Freedman, Fynbo, Fynbo, Gronwall, Grove, Iwata, J. P. U. Fynbo, K. K. Nilsson, Kakazu, Kashikawa, Kobayashi, Malhotra, Mao, Matsuda, Meurer, M��ller, Nilsson, Nilsson, O. M��ller-Nilsson, Ouchi, Ouchi, P. M��ller, Peacock, Pettini, Pflamm-Altenburg, Reddy, Shapley, Shimasaku, Shioya, Stanway, Steidel, Steidel, Tapken, Van Breukelen, Vanzella, Venemans, Verma   +44 more
core   +1 more source

Heavy Sterile Neutrino in Dark Matter Searches

Advances in High Energy Physics, Volume 2018, Issue 1, 2018., 2018
Sterile neutrinos are possible dark matter candidates. We examine here possible detection mechanisms, assuming that the neutrino has a mass of about 50 keV and couples to the ordinary neutrino. Even though this neutrino is quite heavy, it is nonrelativistic with a maximum kinetic energy of 0.1 eV.
Paraskevi C. Divari, John D. Vergados, Athanasios Hatzikoutelis   +2 more
wiley   +1 more source

Imaging FTS: A Different Approach to Integral Field Spectroscopy

Advances in Astronomy, Volume 2014, Issue 1, 2014., 2014
Imaging Fourier transform spectroscopy (iFTS) is a promising, although technically very challenging, option for wide‐field hyperspectral imagery. We present in this paper an introduction to the iFTS concept and its advantages and drawbacks, as well as examples of data obtained with a prototype iFTS, SpIOMM, attached to the 1.6 m telescope of the ...
Laurent Drissen, Laurie Rousseau-Nepton, Sébastien Lavoie, Carmelle Robert, Thomas Martin, Pierre Martin, Julie Mandar, Frédéric Grandmont, Polychronis Papaderos   +8 more
wiley   +1 more source

The Mitchell Spectrograph: Studying Nearby Galaxies with the VIRUS Prototype

Advances in Astronomy, Volume 2013, Issue 1, 2013., 2013
The Mitchell Spectrograph (a.k.a. VIRUS‐P) on the 2.7 m Harlan J. Smith telescope at McDonald Observatory is currently the largest field of view (FOV) integral field unit (IFU) spectrograph in the world (1.7′ × 1.7′). It was designed as a prototype for the highly replicable VIRUS spectrograph which consists of a mosaic of IFUs spread over a 16 ...
Guillermo A. Blanc, Jorge Iglesias Páramo   +1 more
wiley   +1 more source