Results 141 to 150 of about 405,217 (280)

The Metal Absorption Systems of the Hubble Deep Field South QSO [PDF]

, 1998
Sandra Savaglio
openalex   +1 more source

Glimmers in the Cosmic Dawn. II. A Variability Census of Supermassive Black Holes across the Universe

The Astrophysical Journal
Understanding the origin and evolution of supermassive black holes (SMBHs) stands as one of the most important challenges in astrophysics and cosmology, with little current theoretical consensus.
Vieri Cammelli, Jonathan C. Tan, Alice R. Young, Matthew J. Hayes, Jasbir Singh, Richard S. Ellis, Aayush Saxena, Nicolas Laporte, Pierluigi Monaco, Benjamin W. Keller   +9 more
doaj   +1 more source

Exploring the Mpc Environment of the Quasar ULAS J1342+0928 at z = 7.54

The Astrophysical Journal
Theoretical models predict that z ≳ 6 quasars are hosted in the most massive halos of the underlying dark matter distribution and thus would be immersed in protoclusters of galaxies. However, observations report inconclusive results. We investigate the 1.
Sofía Rojas-Ruiz, Chiara Mazzucchelli, Steven L. Finkelstein, Eduardo Bañados, Emanuele Paolo Farina, Bram P. Venemans, Roberto Decarli, Chris J. Willott, Feige Wang, Fabian Walter, Enrico Congiu, Gabriel Brammer, Peter Zeidler   +12 more
doaj   +1 more source

MIDIS: JWST NIRCam and MIRI Unveil the Stellar Population Properties of Lyα Emitters and Lyman-break Galaxies at z ≃ 3–7

The Astrophysical Journal
We study the stellar population properties of 182 spectroscopically confirmed (MUSE/VLT) Ly α emitters (LAEs) and 450 photometrically selected Lyman-break galaxies (LBGs) at z = 2.8–6.7 in the Hubble Extreme Deep Field.
Edoardo Iani, Karina I. Caputi, Pierluigi Rinaldi, Marianna Annunziatella, Leindert A. Boogaard, Göran Östlin, Luca Costantin, Steven Gillman, Pablo G. Pérez-González, Luis Colina, Thomas R. Greve, Gillian Wright, Almudena Alonso-Herrero, Javier Álvarez-Márquez, Arjan Bik, Sarah E. I. Bosman, Alejandro Crespo Gómez, Andreas Eckart, Jens Hjorth, Iris Jermann, Alvaro Labiano, Danial Langeroodi, Jens Melinder, Thibaud Moutard, Florian Peißker, John P. Pye, Tuomo V. Tikkanen, Paul P. van der Werf, Fabian Walter, Thomas K. Henning, Pierre-Olivier Lagage, Ewine F. van Dishoeck   +31 more
doaj   +1 more source

Color Gradients in Early-Type Galaxies in Clusters at the Redshift from 0.37 to 0.56

, 2000
Color gradients in elliptical galaxies in distant clusters ($z=0.37-0.56$) are examined by using the archival deep imaging data of Wide Field Planetary Camera 2 (WFPC2) on-board the Hubble Space Telescope (HST). Obtained color gradients are compared with
Baugh C. M., Carollo C. M., Davies R. L., Goudfrooij P., Goudfrooij P., Kodama T., Kodama T., Kouji Ohta, Naoyuki Tamura, Peletier R. F., Vader J. P.   +10 more
core   +2 more sources

Morphological Number Counts of Galaxies in the Hubble Deep Field South [PDF]

, 2000
Myung Gyoon Lee, Narae Hwang
openalex   +1 more source

Evidence for evolving spheroidals in the Hubble Deep Fields North and South [PDF]

, 2001
F. Menanteau, Roberto Abraham, Richard S. Ellis   +2 more
openalex   +1 more source

Lyman Continuum Emission from Active Galactic Nuclei at 2.3 ≲ z ≲ 3.7 in the UVCANDELS Fields

The Astrophysical Journal
We present the results of our search for Lyman continuum (LyC)-emitting (weak) active galactic nuclei (AGN) at redshifts 2.3 ≲ z ≲ 4.9 from Hubble Space Telescope (HST) Wide Field Camera 3 (WFC3) F275W observations in the Ultraviolet Imaging of the ...
Brent M. Smith, Rogier A. Windhorst, Harry Teplitz, Matthew Hayes, Marc Rafelski, Mark Dickinson, Vihang Mehta, Nimish P. Hathi, John MacKenty, L. Y. Aaron Yung, Anton M. Koekemoer, Emmaris Soto, Christopher J. Conselice, Ray A. Lucas, Xin Wang, Keunho J. Kim, Anahita Alavi, Norman A. Grogin, Ben Sunnquist, Laura Prichard, Rolf A. Jansen, the UVCANDELS team   +21 more
doaj   +1 more source

Lyman Continuum Leakers in the AstroSat Ultraviolet Deep Field: Extreme-ultraviolet Emitters at the Cosmic Noon

The Astrophysical Journal Letters
We report the direct detection of Lyman continuum (LyC) emission from nine galaxies and one active galactic nucleus at z ∼ 1.1–1.6 in the GOODS-North field using deep observations from the Ultraviolet Imaging Telescope (UVIT) on board AstroSat.
Suraj Dhiwar, Kanak Saha, Soumil Maulick, Brent M. Smith, Chayan Mondal, Harry I. Teplitz, Marc Rafelski, Rogier A. Windhorst   +7 more
doaj   +1 more source

Distant red galaxies in the Hubble Ultra Deep Field

, 2005
We take advantage of the Hubble Ultra Deep Field (UDF) data to study the restframe optical and ultra violet (UV) morphologies of the novel population of Distant Red Galaxies (DRGs).
Bolzonella M., G. D. Illingworth, M. Franx, M. Kriek, P. van Dokkum, R. I. Thompson, R. J. Bouwens, S. Toft   +7 more
core   +1 more source