Results 31 to 40 of about 108,043 (278)
Target Selection and Sample Characterization for the DESI LOW-Z Secondary Target Program
The Astrophysical Journal, 2023 We introduce the DESI LOW- Z Secondary Target Survey, which combines the wide-area capabilities of the Dark Energy Spectroscopic Instrument (DESI) with an efficient, low-redshift target selection method.
Elise Darragh-Ford +41 more
doaj +1 more source
A fundamental relation between mass, SFR and metallicity in local and high redshift galaxies [PDF]
, 2010 We show that the mass-metallicity relation observed in the local universe is due to a more general relation between stellar mass M*, gas-phase metallicity and SFR.
F. Mannucci +4 more
semanticscholar +1 more source
The erratic dynamical life of black hole seeds in high-redshift galaxies [PDF]
Monthly notices of the Royal Astronomical Society, 2019 The dynamics of black hole seeds in high redshift galaxies is key to understand their ability to grow via accretion and to pair in close binaries during galactic mergers.
H. Pfister +4 more
semanticscholar +1 more source
The Puzzling Properties of the MACS1149-JD1 Galaxy at z = 9.11
The Astrophysical Journal Letters, 2023 We analyze new JWST NIRCam and NIRSpec data on the redshift 9.11 galaxy MACS1149-JD1 (hereafter JD1). Our NIRCam imaging data reveal that JD1 comprises three spatially distinct components. Our spectroscopic data indicate that JD1 appears dust free but is
Massimo Stiavelli +8 more
doaj +1 more source
The Astrophysical Journal, 2023 High-resolution imaging of galaxies in rest-frame UV has revealed the existence of giant star-forming clumps prevalent in high-redshift galaxies. Studying these substructures provides important information about their formation and evolution and informs ...
Zahra Sattari +27 more
doaj +1 more source
High-Redshift Radio Galaxies [PDF]
Highlights of Astronomy, 1995 Radio galaxies are unique cosmological probes. As with radio-loud quasars, the presence of luminous radio continuum and optical line emission enable radio galaxies to be observed and recognized at large distances, up to z = 4.2. However, unlike the situation for most quasars, their optical emission can be spatially resolved from the ground and studied ...
openaire +1 more source
High-redshift lensed galaxies [PDF]
Proceedings of the International Astronomical Union, 2006 AbstractWe present the results obtained from our deep survey of lensing clusters aimed at constraining the abundance of star-forming galaxies at z∼6–11.
Pelló, Roser +10 more
openaire +2 more sources
RECONCILING THE STELLAR AND NEBULAR SPECTRA OF HIGH-REDSHIFT GALAXIES [PDF]
, 2016 We present a combined analysis of rest-frame far-UV (FUV; 1000–2000 Å) and rest-frame optical (3600–7000 Å) composite spectra formed from very deep Keck/LRIS and Keck/MOSFIRE observations of a sample of 30 star-forming galaxies with , selected to be ...
C. Steidel +5 more
semanticscholar +1 more source
Spectral Templates Optimal for Selecting Galaxies at z > 8 with the JWST
The Astrophysical Journal, 2023 The selection of high-redshift galaxies often involves spectral energy distribution (SED) fitting to photometric data, an expectation for contamination levels, and measurement of sample completeness—all vetted through comparison to spectroscopic redshift
Rebecca L. Larson +11 more
doaj +1 more source
The physics of Lyman α escape from high-redshift galaxies [PDF]
Monthly notices of the Royal Astronomical Society, 2018 Lyman-alpha (Ly{\alpha}) photons from ionizing sources and cooling radiation undergo a complex resonant scattering process that generates unique spectral signatures in high-redshift galaxies. We present a detailed Ly{\alpha} radiative transfer study of a
Aaron Smith +6 more
semanticscholar +1 more source