Results 11 to 20 of about 252,176 (198)

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

PAWS and POCO: NIR Astrophotonic Instruments for Astronomy

Astronomische Nachrichten, Volume 344, Issue 8-9, October-November 2023., 2023
Abstract For near‐infrared ground and space‐based astronomy, compact photonic devices can replace the large bulk optical components in spectrographs, frequency combs, beam combiners, and sky subtraction filters, thus saving cost, reducing volume, weight, and power requirements.
Kalaga Madhav, Alan Günther, Eloy Hernandez, Stella Vjes̆nica, Daniel Bodenmüller, Andreas Stoll, Christer Sandin, Haydar Altuğ Yıldırım, Martin M. Roth   +8 more
wiley   +1 more source

Revisiting the emission line source detection problem in integral field spectroscopic data

Astronomische Nachrichten, Volume 344, Issue 5, June 2023., 2023
Abstract We present a 3‐dimensional matched filtering approach for the blind search of faint emission‐line sources in integral‐field spectroscopic datasets. The filter is designed to account for the spectrally rapidly varying background noise due to the telluric air glow spectrum.
Edmund Christian Herenz
wiley   +1 more source

Effect of the metallicity of the intergalactic medium in the Lyman‐α forest correlation function

Astronomische Nachrichten, Volume 344, Issue 1-2, January-February 2023., 2023
Abstract The Lyman‐α (Lyα) forest allows to constraint cosmological parameters at redshifts above 1.8$$ 1.8 $$ using the technique of standard rulers determined by baryon acoustic oscillations. This makes it an important tracer for the study of the universe at high redshift.
Andrea Muñoz‐Gutiérrez, Axel de la Macorra   +1 more
wiley   +1 more source

The Cusp Plasma Imaging Detector (CuPID) CubeSat Observatory: Mission Overview

Journal of Geophysical Research: Space Physics, Volume 126, Issue 4, April 2021., 2021
Abstract The Cusp Plasma Imaging detector (CuPID) Cube Satellite Observatory is a six‐unit Cube Satellite developed to study macroscale properties of dayside magnetopause reconnection. Reconnection will be studied through imaging spatial and temporal ion dispersion signatures in the magnetospheric cusps.
B. M. Walsh, M. R. Collier, E. Atz, L. Billingsley, J. M. Broll, H. K. Connor, D. Chornay, T. Cragwell, N. Dobson, S. Eckert, D. Einhorn, G. Gallant, K. Jackson, S. Karki, J. Kujawski, K. D. Kuntz, V. Naldoza, R. A. Nutter, J. Moore, C. O’Brien, A. Perez‐Rosado, F. S. Porter, D. G. Sibeck, K. Simms, W. Skelton, N. Thomas, D. L. Turner, A. Yousuff, A. Weatherwax, A. Zosuls, E. Thomas   +30 more
wiley   +1 more source

JWST Measurements of Neutral Hydrogen Fractions and Ionized Bubble Sizes at z = 7–12 Obtained with Lyα Damping Wing Absorptions in 27 Bright Continuum Galaxies [PDF]

Astrophysical Journal, 2023
We present volume-averaged neutral hydrogen fractions x H I and ionized bubble radii R b measured with Lyα damping wing absorption of galaxies at the epoch of reionization.
Hiroya Umeda, M. Ouchi, K. Nakajima, Y. Harikane, Y. Ono, Yi Xu, Y. Isobe, Yechi Zhang   +7 more
semanticscholar   +1 more source

Minihalo model for the low-redshift Lyα absorbers revisited [PDF]

Serbian Astronomical Journal, 2008
We reconsider the basic properties of the classical minihalo model of Rees and Milgrom in light of the new work, both observational (on 'dark galaxies' and masses of baryonic haloes) and theoretical (on the cosmological mass function and the history of ...
Lalović A., Ćirković M.M.
doaj   +1 more source

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 DYNAMICAL MASSES, DENSITIES, AND STAR FORMATION SCALING RELATIONS OF Lyα GALAXIES [PDF]

, 2013
We present the first dynamical mass measurements for Lyα galaxies at high redshift, based on velocity dispersion measurements from rest-frame optical emission lines and size measurements from Hubble Space Telescope imaging, for nine galaxies drawn from ...
J. Rhoads, S. Malhotra, M. Richardson, S. Finkelstein, J. Fynbo, E. Mclinden, V. Tilvi   +6 more
semanticscholar   +1 more source

Early Results from GLASS-JWST. XXII. Rest-frame UV–Optical Spectral Properties of Lyα Emitting Galaxies at 3 < z < 6 [PDF]

Astrophysical Journal Letters, 2023
Lyα emission is possibly the best indirect diagnostic of Lyman continuum (LyC) escape since the conditions that favor the escape of Lyα photons are often the same that allow for the escape of LyC photons.
N. Roy, A. Henry, T. Treu, T. Jones, G. Prieto-Lyon, C. Mason, T. Heckman, T. Nanayakkara, L. Pentericci, S. Mascia, M. Bradač, E. Vanzella, C. Scarlata, K. Boyett, M. Trenti, Xin Wang   +15 more
semanticscholar   +1 more source