Results 111 to 120 of about 47,826 (245)

Exploring the SDSS Photometric Galaxies with Clustering Redshifts

, 2016
We apply clustering-based redshift inference to all extended sources from the Sloan Digital Sky Survey photometric catalogue, down to magnitude r = 22.
Budavári, Tamás, Mendez, Alexander J., Morrison, Christopher B., Ménard, Brice, Rahman, Mubdi, Schmidt, Samuel J., Scranton, Ryan   +6 more
core   +1 more source

Photometric Redshifts with Copula Entropy

, 2023
15 pages, 7 figures, 1 ...
openaire   +2 more sources

Identifying Catastrophic Outlier Photometric Redshift Estimates in the COSMOS Field with Machine Learning Methods

The Astrophysical Journal
We present the result of two binary classifier ensembled neural networks to identify catastrophic outliers for photo- z estimates within the COSMOS field utilizing only eight and five photometric bandpasses, respectively.
Mitchell T. Dennis, Esther M. Hu, Lennox L. Cowie   +2 more
doaj   +1 more source

The Bimodal Color Distribution of Galaxies at Redshift of z=0-0.15 from the Sloan Digital Sky Survey (SDSS)

Al-Mustansiriyah Journal of Science, 2019
This work aims to use the color distribution of galaxies to differentiate between blue and red galaxies. The photometric data of 300000 galaxies at redshift of z = 0 – 0.15 were collected from the Sloan Digital Sky Survey (SDSS).
Hareth Saad Mahdi
doaj   +1 more source

Optical Spectroscopy of Distant Red Galaxies

, 2009
We present optical spectroscopic follow-up of a sample of Distant Red Galaxies (DRGs) with K 2.3, in the Hubble Deep Field South, the MS 1054-03 field, and the Chandra Deep Field South. Spectroscopic redshifts were obtained for 15 DRGs. Only 2 out of 15
Franx, Marijn, Illingworth, Garth D., Labbe, Ivo, Rudnick, Gregory, Schreiber, Natascha M. Forster, van Dokkum, Pieter G., Wuyts, Stijn   +6 more
core   +1 more source

The ALHAMBRA Project: A large area multi medium-band optical and NIR photometric survey [PDF]

, 2008
(ABRIDGED) We describe the first results of the ALHAMBRA survey which provides cosmic tomography of the evolution of the contents of the Universe over most of Cosmic history.
A. del Olmo, A. Fernández-Soto, Adelman-McCarthy, Baum, Becker, Beckwith, Bell, Benítez, Benítez, Benítez, Bradley, Brown, Coe, Connolly, D. Cristóbal-Hornillos, E. J. Alfaro, F. J. Castander, F. Prada, Fernández-Soto, Fernández-Soto, Ford, Gregg, Hickson, Hickson, I. Márquez, J. A. L. Aguerri, J. Cabrera-Caño, J. Cepa, J. M. Quintana, J. Masegosa, J. Perea, Kashikawa, Koo, L. Infante, Lilly, M. Cerviño, M. Moles, Marchesini, Meisenheimer, Meisenheimer, Mobasher, Moles, Monet, N. Benítez, Peacock, Poli, R. M. González Delgado, S. F. Sánchez, Schlegel, Smith, T. Broadhurst, Treu, V. J. Martínez, Valdes, Wolf, York   +55 more
core   +2 more sources

UVCANDELS: Catalogs of Photometric Redshifts and Galaxy Physical Properties

The Astrophysical Journal Supplement Series
The UltraViolet imaging of the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey Fields (UVCANDELS) program provides deep Hubble Space Telescope (HST) F275W and F435W imaging over four CANDELS fields (GOODS-N, GOODS-S, COSMOS, and Extended ...
Vihang Mehta, Marc Rafelski, Ben Sunnquist, Harry I. Teplitz, Claudia Scarlata, Xin Wang, Adriano Fontana, Nimish P. Hathi, Kartheik G. Iyer, Anahita Alavi, James Colbert, Norman Grogin, Anton Koekemoer, Kalina V. Nedkova, Matthew Hayes, Laura Prichard, Brian Siana, Brent M. Smith, Rogier Windhorst, Teresa Ashcraft, Micaela Bagley, Ivano Baronchelli, Guillermo Barro, Alex Blanche, Adam Broussard, Timothy Carleton, Nima Chartab, Alex Codoreanu, Seth Cohen, Christopher Conselice, Y. Sophia Dai, Behnam Darvish, Romeel Davé, Laura DeGroot, Duilia De Mello, Mark Dickinson, Najmeh Emami, Henry Ferguson, Leonardo Ferreira, Keely Finkelstein, Steven Finkelstein, Jonathan P. Gardner, Eric Gawiser, Timothy Gburek, Mauro Giavalisco, Andrea Grazian, Caryl Gronwall, Yicheng Guo, Pablo Arrabal Haro, Shoubaneh Hemmati, Justin Howell, Rolf A. Jansen, Zhiyuan Ji, Sugata Kaviraj, Keunho J. Kim, Peter Kurczynski, Ilin Lazar, Ray A. Lucas, John MacKenty, Kameswara Bharadwaj Mantha, Alec Martin, Garreth Martin, Tyler McCabe, Bahram Mobasher, Alexa M. Morales, Robert O’Connell, Charlotte Olsen, Lillian Otteson, Swara Ravindranath, Caleb Redshaw, Michael Rutkowski, Brant Robertson, Zahra Sattari, Emmaris Soto, Lei Sun, Sina Taamoli, Eros Vanzella, L. Y. Aaron Yung, Bonnabelle Zabelle, The UVCANDELS Team   +79 more
doaj   +1 more source

Peering into the Cosmic Dawn: JWST Cycle 1 Data Reveals Early Galaxy Candidates at Redshifts z > 9.5

Edinburgh Student Journal of Science
Observing high-redshift objects provides a window into the past, enabling insight into galaxy formation, matter distribution, and the nature of dark matter and energy.
Sev Zielinska
doaj   +1 more source

Measuring the Conditional Luminosity and Stellar Mass Functions of Galaxies by Combining the Dark Energy Spectroscopic Instrument Legacy Imaging Surveys Data Release 9, Survey Validation 3, and Year 1 Data

The Astrophysical Journal
In this investigation, we leverage the combination of the Dark Energy Spectroscopic Instrument (DESI) Legacy Imaging Surveys Data Release 9, Survey Validation 3, and Year 1 data sets to estimate the conditional luminosity functions and conditional ...
Yirong Wang, Xiaohu Yang, Yizhou Gu, Xiaoju Xu, Haojie Xu, Yuyu Wang, Antonios Katsianis, Jiaxin Han, Min He, Yunliang Zheng, Qingyang Li, Yaru Wang, Wensheng Hong, Jiaqi Wang, Zhenlin Tan, Hu Zou, Johannes Ulf Lange, ChangHoon Hahn, Peter Behroozi, Jessica Nicole Aguilar, Steven Ahlen, David Brooks, Todd Claybaugh, Shaun Cole, Axel de la Macorra, Biprateep Dey, Peter Doel, Jaime E. Forero-Romero, Klaus Honscheid, Robert Kehoe, Theodore Kisner, Andrew Lambert, Marc Manera, Aaron Meisner, Ramon Miquel, John Moustakas, Jundan Nie, Claire Poppett, Mehdi Rezaie, Graziano Rossi, Eusebio Sanchez, Michael Schubnell, Gregory Tarlé, Benjamin Alan Weaver, Zhimin Zhou   +44 more
doaj   +1 more source

A Holistic Exploration of the Potentially Recoverable Redshift Information of Stage IV Galaxy Surveys

The Astrophysical Journal
Extragalactic science and cosmology with Stage IV galaxy surveys will rely almost exclusively on redshift measurements derived solely from photometry, which are subject to systematic and statistical uncertainties with numerous analysis choices.
Bryan R. Scott, Alex I. Malz, Robert Sorba   +2 more
doaj   +1 more source