Results 41 to 50 of about 108,440 (263)

Hot cores: probes of high-redshift galaxies? [PDF]

Monthly Notices of the Royal Astronomical Society, 2005
Updated to correspond to version accepted by ...
Lintott, C.J., Viti, S., Williams, D.A., Rawlings, J.M.C., Ferreras, I.   +4 more
openaire   +4 more sources

Local Analogs for High-redshift Galaxies: Resembling the Physical Conditions of the Interstellar Medium in High-redshift Galaxies

, 2016
We present a sample of local analogs for high-redshift galaxies selected in the Sloan Digital Sky Survey (SDSS). The physical conditions of the interstellar medium (ISM) in these local analogs resemble those in high-redshift galaxies.
Bian, Fuyan, Dopita, Michael, Juneau, Stephanie, Kewley, Lisa   +3 more
core   +1 more source

Unveiling the Cosmic Chemistry. II. “Direct” Te-based Metallicity of Galaxies at 3 < z < 10 with JWST/NIRSpec

The Astrophysical Journal
We report the detection of the [O iii ] auroral line in 42 galaxies within the redshift range of 3 < z < 10. These galaxies were selected from publicly available JWST data releases, including the JADES and PRIMAL surveys, and observed using both the low ...
Priyanka Chakraborty, Arnab Sarkar, Randall Smith, Gary J. Ferland, Michael McDonald, William Forman, Mark Vogelsberger, Paul Torrey, Alex M. Garcia, Mark Bautz, Adam Foster, Eric Miller, Catherine Grant   +12 more
doaj   +1 more source

Spatial Extent of Molecular Gas, Dust, and Stars in Massive Galaxies at z ∼ 2.2–2.5 Determined with ALMA and JWST

The Astrophysical Journal Letters, 2023
We present the results of 0.″6-resolution observations of CO J = 3 − 2 line emission in 10 massive star-forming galaxies at z ∼ 2.2–2.5 with the Atacama Large Millimeter/submillimeter Array (ALMA).
Ken-ichi Tadaki, Tadayuki Kodama, Yusei Koyama, Tomoko L. Suzuki, Ikki Mitsuhashi, Ryota Ikeda   +5 more
doaj   +1 more source

Lyα emission in high-redshift galaxies [PDF]

Astronomy & Astrophysics, 2007
Context. A significant fraction of the high-redshift galaxies show st rong Lyα emission lines. For redshifts z> 5, most known galaxies belong to this class. However, so far not much is known about the physical structure and nature of these objects. Aims.
Tapken, C., Appenzeller, I., Noll, S., Richling, S., Heidt, J., Meinköhn, E., Mehlert, D.   +6 more
openaire   +3 more sources

The THESEUS Space Mission and the Infrared Telescope Calibration Unit

Astronomische Nachrichten, EarlyView.
ABSTRACT The Transient High‐Energy Sky and Early Universe Surveyor (THESEUS) is an ESA M7 mission concept currently in Phase A, designed to exploit gamma‐ray bursts to probe the early Universe while advancing multi‐messenger and time‐domain astrophysics. To achieve its ambitious goals, THESEUS will combine wide‐band x‐ray and gamma‐ray monitors with an
András Péter Joó, Rebeka Gyöngyi Kiss, Lorenzo Amati, Bendegúz Koncz, Örs Detre, Gyula Zilizi, Zsolt Bagoly, István I. Rácz, Sándor Pintér, L. Viktor Tóth   +9 more
wiley   +1 more source

Simulating High-redshift Galaxies: Enhancing UV Luminosity with Star Formation Efficiency and a Top-heavy IMF

The Astrophysical Journal
Recent findings from photometric and spectroscopic JWST surveys have identified examples of high-redshift galaxies at z  ≳ 10. These high- z galaxies appear to form much earlier and exhibit greater UV luminosity than predicted by theoretical work.
Tae Bong Jeong, Myoungwon Jeon, Hyunmi Song, Volker Bromm   +3 more
doaj   +1 more source

Dozens of compact and high velocity-dispersion early-type galaxies in Sloan Digital Sky Survey

, 2015
Aims. We aim at finding candidates of potential survivors of high-redshift compact galaxies in SDSS, as targets for more detailed follow-up observations. Methods.
Bosch, Remco C. E. van den, Mieske, Steffen, Saulder, Christoph   +2 more
core   +1 more source

Stellar Masses of High-Redshift Galaxies [PDF]

, 2002
We present constraints on the stellar-mass distribution of distant galaxies. These stellar-mass estimates derive from fitting population-synthesis models to the galaxies' observed multi-band spectrophotometry.
Dickinson, Mark, Ferguson, Harry, Papovich, Casey   +2 more
core   +2 more sources

Galaxies at High Redshift [PDF]

Astrophysics and Space Science, 1999
Within just the last few years, we have advanced from knowing only a few galaxies at z>2 to having redshifts for nearly 1000 z~2-5 objects. The majority of this sample has been detected through the photometric ``drop-out'' technique used so successfully by Steidel and his collaborators. In addition, a handful of objects have already been detected at
openaire   +2 more sources