Results 111 to 120 of about 108,440 (263)

The distribution and lifetime of powerful radio galaxies as a function of environment and redshift

open access: yesScientific Reports, 2018
Correlations between jet power and active time for z 
David Garofalo   +2 more
doaj   +1 more source

Photometric Redshift Estimation Using Scaled Ensemble Learning

open access: yesThe Astrophysical Journal
The development of the state-of-the-art telescopic systems capable of performing expansive sky surveys such as the Sloan Digital Sky Survey, Euclid, and the Rubin Observatory’s Legacy Survey of Space and Time (LSST) has significantly advanced efforts to ...
Swagata Biswas   +7 more
doaj   +1 more source

Environmental Dependence of Different Colors for the Apparent Magnitude-Limited Main Galaxy Sample of the SDSS DR7

open access: yesOpen Astronomy, 2013
The apparent magnitude-limited Main galaxy sample of the Sloan Digital Sky Survey Data Release 7 is used to investigate the environmental dependence of u–r, u–g, g–r, r–i and i–z colors.
Deng Xin-Fa   +3 more
doaj   +1 more source

CHILES. VIII. Probing the Evolution of Average H I Content in Star-forming Galaxies over the Past 5 Gyr

open access: yesThe Astrophysical Journal
Utilizing the COSMOS H I Large Extragalactic Survey (CHILES) data set, we investigate the evolution of the average atomic neutral hydrogen (H I ) properties of galaxies over the continuous redshift range 0.09 
Nicholas Luber   +11 more
doaj   +1 more source

Discovery of Local Analogs to JWST’s Little Red Dots

open access: yesThe Astrophysical Journal Letters
Recently, the James Webb Space Telescope has revealed a new class of high-redshift (high- z , z  > 4) compact galaxies that are red in the rest-frame optical and blue in the rest-frame UV with V-shaped spectral energy distributions (SEDs), referred to as
Ruqiu Lin   +14 more
doaj   +1 more source

Escape of about five per cent of Lyman-α photons from high-redshift star-forming galaxies [PDF]

open access: green, 2010
Matthew Hayes   +9 more
openalex   +1 more source

On the Very Bright Dropouts Selected Using the James Webb Space Telescope NIRCam Instrument

open access: yesThe Astrophysical Journal
The selection of candidate high-redshift galaxies using the dropout technique targeting the Lyman-break signature sometimes yields very bright objects that are too luminous to be easily explained if they are indeed at the expected redshifts.
Bangzheng Sun, Haojing Yan
doaj   +1 more source

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