Results 141 to 150 of about 47,826 (245)

Tests of Catastrophic Outlier Prediction in Empirical Photometric Redshift Estimation with Redshift Probability Distributions [PDF]

, 2020
Evan Jones, J. Singal
openalex   +1 more source

Cross-Correlation of spectroscopic and photometric galaxy surveys: cosmology from lensing and redshift distortions

, 2012
Cosmological galaxy surveys aim at mapping the largest volumes to test models with techniques such as cluster abundance, cosmic shear correlations or baryon acoustic oscillations (BAO), which are designed to be independent of galaxy bias. Here we explore
Amendola, Anna Cabré, Bartelmann, Benjamin, Benítez, Bernardeau, Bernstein, Bernstein, Bernstein, Bernstein, Blanton, Bonoli, Broadhurst, Cabré, Cabré, Cai, Casas, Casas-Miranda, Challinor, Chevallier, Crocce, Crocce, Crocce, Dahlen, Dahlen, Dekel, di Porto, Eisenstein, Enrique Gaztañaga, Fang, Fosalba, Francisco J. Castander, Frieman, Fry, Gaztañaga, Gaztañaga, Gaztañaga, Gaztañaga, Gaztañaga, Gaztañaga, Gaztañaga, Gunn, Guzik, Hamaus, Hikage, Hildebrandt, Hoekstra, Hu, Hu, Hui, Hui, Huterer, Ilbert, Ivezic, Jain, Jeong, Jeong, Johnston, Jouvel, Kaiser, Komatsu, Limder, Linder, Linder, Loverde, Loverde, Lue, Manera, Manera, Martin Crocce, Martin Eriksen, Matsubara, Matsubara, McDonald, Menard, Moessner, Namikawa, Narayan, Newman, Nock, Norberg, Pablo Fosalba, Peebles, Pen, Pogosian, Pol Marti, Ramon Miquel, Refregier, Refregier, Reyes, Ross, Scherrer, Scoccimarro, Scranton, Sefusatti, Seljak, Semboloni, Seo, Sherrer, Song, Tegmark, Tegmark, van Daalen, van Waerbeke, van Waerbeke, Villumsen, White, Zhang   +107 more
core   +1 more source

Exploring Quasar Variability with ZTF at 0 < z < 3: A Universal Relation with the Eddington Ratio

The Astrophysical Journal
Quasars, powered by accretion onto supermassive black holes (SMBHs), exhibit significant variability, offering insights into the physics of accretion and the properties of the central engines.
Hygor Benati Gonçalves, Swayamtrupta Panda, Thaisa Storchi Bergmann, Edward M. Cackett, Michael Eracleous   +4 more
doaj   +1 more source

ANNz2 - Photometric redshift and probability density function estimation using machine-learning [PDF]

, 2014
I. Sadeh
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The VIMOS Public Extragalactic Redshift Survey (VIPERS). Unsupervised classification with photometric redshifts: a method to accurately classify large galaxy samples without spectroscopic information [PDF]

, 2018
M. Siudek, K. Małek, A. Pollo, B. R. Granett, M. Scodeggio, T. Moutard, A. Iovino, L. Guzzo, B. Garilli, M. Bolzonella, S. de la Torre, U. Abbas, C. Adami, D. Bottini, A. Cappi, O. Cucciati, I. Davidzon, P. Franzetti, A. Fritz, J. Krywult, V. Le Brun, O. Le Févre, D. Maccagni, F. Marulli, M. Polletta, L. A. M. Tasca, Rita Tojeiro, D. Vergani, A. Zanichelli, S. Arnouts, J. Bel, E. Branchini, J. Coupon, G. De Lucia, O. Ilbert, L. Moscardini, G. Zamorani, Tsutomu T. Takeuchi   +37 more
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Tomographic halo model of the unWISE-Blue galaxies using cross-correlations with BOSS CMASS galaxies

The Open Journal of Astrophysics
The halo model offers a framework for investigating galaxy clustering, and for understanding the growth of galaxies and the distribution of galaxies of different types.
Alex Krolewski, Jensen Lawrence, Will J. Percival   +2 more
doaj   +1 more source

The Universe SPHEREx Will See: Empirically Based Galaxy Simulations and Redshift Predictions

The Astrophysical Journal
We simulate galaxy properties and redshift estimation for SPHEREx, the next NASA Medium Class Explorer. To make robust models of the galaxy population and test the spectrophotometric redshift performance for SPHEREx, we develop a set of synthetic ...
Richard M. Feder, Daniel C. Masters, Bomee Lee, James J. Bock, Yi-Kuan Chiang, Ami Choi, Olivier Doré, Shoubaneh Hemmati, Olivier Ilbert   +8 more
doaj   +1 more source

A PHOTOMETRIC REDSHIFT OFz∼ 9.4 FOR GRB 090429B [PDF]

, 2011
Antonino Cucchiara, A. J. Levan, D. B. Fox, N. R. Tanvir, T. N. Ukwatta, E. Berger, T. Krühler, A. Yoldaş, Xue-Feng Wu, Kenji Toma, J. Greiner, F. E. Olivares, A. Rowlinson, L. Amati, T. Sakamoto, Katherine C. Roth, Andrew W. Stephens, Alexander Fritz, J. P. U. Fynbo, J. Hjorth, D. Malesani, P. Jakobsson, K. Wiersema, P. T. O’Brien, A. M. Soderberg, R. J. Foley, A. S. Fruchter, James E. Rhoads, Robert E. Rutledge, B. Schmidt, M. A. Dopita, Philipp Podsiadlowski, R. Willingale, Christian Wolf, S. R. Kulkarni, P. D’Avanzo   +35 more
openalex   +1 more source

Cosmic Dragons: A Two-Component Mixture Model of COSMOS Galaxies

The Open Journal of Astrophysics
Using the photometric population prediction method {\bf Red Dragon}, we characterize the Red Sequence (RS) and Blue Cloud (BC) of DES galaxies in the COSMOS field. Red Dragon (RD) uses a redshift-evolving, error-corrected Gaussian mixture model to detail
William K. Black, August E. Evrard
doaj   +1 more source

A unified framework for constructing, tuning and assessing photometric redshift density estimates in a selection bias setting. [PDF]

Mon Not R Astron Soc, 2017
Freeman PE, Izbicki R, Lee AB.
europepmc   +1 more source