Related papers: Catastrophic Photo-z Errors and the Dark Energy Pa…

Dark energy constraints and correlations with systematics from CFHTLS weak lensing, SNLS supernovae Ia and WMAP5

We combine measurements of weak gravitational lensing from the CFHTLS-Wide survey, supernovae Ia from CFHT SNLS and CMB anisotropies from WMAP5 to obtain joint constraints on cosmological parameters, in particular, the dark energy equation…

Astrophysics · Physics 2009-11-13 M. Kilbinger , K. Benabed , J. Guy , P. Astier , I. Tereno , L. Fu , D. Wraith , J. Coupon , Y. Mellier , C. Balland , F. R. Bouchet , T. Hamana , D. Hardin , H. J. McCracken , R. Pain , N. Regnault , M. Schultheis , H. Yahagi

Statistical and Systematic Errors in Measurement of Weak-Lensing Minkowski Functionals: Application to Canada-France-Hawaii Lensing Survey

The measurement of cosmic shear using weak gravitational lensing is a challenging task that involves a number of complicated procedures. We study in detail the systematic errors in the measurement of weak lensing Minkowski Functionals…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-18 Masato Shirasaki , Naoki Yoshida

COSMOS Photometric Redshifts with 30-bands for 2-deg2

We present accurate photometric redshifts in the 2-deg2 COSMOS field. The redshifts are computed with 30 broad, intermediate, and narrow bands covering the UV (GALEX), Visible-NIR (Subaru, CFHT, UKIRT and NOAO) and mid-IR (Spitzer/IRAC). A…

Astrophysics · Physics 2008-12-18 O. Ilbert , P. Capak , M. Salvato , H. Aussel , H. J. McCracken , D. B. Sanders , N. Scoville , J. Kartaltepe , S. Arnouts , E. Le Floc'h , B. Mobasher , Y. Taniguchi , F. Lamareille , A. Leauthaud , S. Sasaki , D. Thompson , M. Zamojski , G. Zamorani , S. Bardelli , M. Bolzonella , A. Bongiorno , M. Brusa , K. I. Caputi , C. M. Carollo , T. Contini , R. Cook , G. Coppa , O. Cucciati , S. de la Torre , L. de Ravel , P. Franzetti , B. Garilli , G. Hasinger , A. Iovino , P. Kampczyk , J. -P. Kneib , C. Knobel , K. Kovac , J. F. Le Borgne , V. Le Brun , O. Le Fevre , S. Lilly , D. Looper , C. Maier , V. Mainieri , Y. Mellier , M. Mignoli , T. Murayama , R. Pello , Y. Peng , E. Perez-Montero , A. Renzini , E. Ricciardelli , D. Schiminovich , M. Scodeggio , Y. Shioya , J. Silverman , J. Surace , M. Tanaka , L. Tasca , L. Tresse , D. Vergani , E. Zucca

Galaxy clustering, photometric redshifts and diagnosis of systematics in the DES Science Verification data

We study the clustering of galaxies detected at $i<22.5$ in the Science Verification observations of the Dark Energy Survey (DES). Two-point correlation functions are measured using $2.3\times 10^6$ galaxies over a contiguous 116 deg$^2$…

Cosmology and Nongalactic Astrophysics · Physics 2015-12-16 M. Crocce , J. Carretero , A. H. Bauer , A. J. Ross , I. Sevilla-Noarbe , T. Giannantonio , F. Sobreira , J. Sanchez , E. Gaztanaga , M. Carrasco Kind , C. Sanchez , C. Bonnett , A. Benoit-Levy , R. J. Brunner , A. Carnero Rosell , R. Cawthon , P. Fosalba , W. Hartley , E. J. Kim , B. Leistedt , R. Miquel , H. V. Peiris , W. J. Percival , R. Rosenfeld , E. S. Rykoff , E. Sanchez , T. Abbott , F. B. Abdalla , S. Allam , M. Banerji , G. M. Bernstein , E. Bertin , D. Brooks , E. Buckley-Geer , D. L. Burke , D. Capozzi , F. J. Castander , C. E. Cunha , C. B. D'Andrea , L. N. da Costa , S. Desai , H. T. Diehl , T. F. Eifler , A. E. Evrard , A. Fausti Neto , E. Fernandez , D. A. Finley , B. Flaugher , J. Frieman , D. W. Gerdes , D. Gruen , R. A. Gruendl , G. Gutierrez , K. Honscheid , D. J. James , K. Kuehn , N. Kuropatkin , O. Lahav , T. S. Li , M. Lima , M. A. G. Maia , M. March , J. L. Marshall , P. Martini , P. Melchior , C. J. Miller , E. Neilsen , R. C. Nichol , B. Nord , R. Ogando , A. A. Plazas , A. K. Romer , M. Sako , B. Santiago , M. Schubnell , R. C. Smith , M. Soares-Santos , E. Suchyta , M. E. C. Swanson , G. Tarle , J. Thaler , D. Thomas , V. Vikram , A. R. Walker , R. H. Wechsler , J. Weller , J. Zuntz

What Lies Beneath: Using p(z) to Reduce Systematic Photometric Redshift Errors

We use simulations to demonstrate that photometric redshift "errors" can be greatly reduced by using the photometric redshift probability distribution p(z) rather than a one-point estimate such as the most likely redshift. In principle this…

Cosmology and Nongalactic Astrophysics · Physics 2009-08-03 D. Wittman

A Near-Infrared Spectroscopic Survey of K-selected Galaxies at z~2.3: Redshifts and Implications for Broadband Photometric Studies

Using the Gemini Near-InfraRed Spectrograph (GNIRS), we have completed a near-infrared spectroscopic survey for K-bright galaxies at z~2.3, selected from the MUSYC survey. We derived spectroscopic redshifts from emission lines or from…

Astrophysics · Physics 2009-11-13 Mariska Kriek , Pieter G. van Dokkum , Marijn Franx , Garth D. Illingworth , Danilo Marchesini , Ryan Quadri , Gregory Rudnick , Edward N. Taylor , Natascha M. Forster Schreiber , Eric Gawiser , Ivo Labbe , Paulina Lira , Stijn Wuyts

Simultaneous Estimation of Photometric Redshifts and SED Parameters: Improved Techniques and a Realistic Error Budget

We seek to improve the accuracy of joint galaxy photometric redshift estimation and spectral energy distribution (SED) fitting. By simulating different sources of uncorrected systematic errors, we demonstrate that if the uncertainties on…

Instrumentation and Methods for Astrophysics · Physics 2015-06-24 Viviana Acquaviva , Anand Raichoor , Eric Gawiser

Euclid preparation. XXXI. The effect of the variations in photometric passbands on photometric-redshift accuracy

The technique of photometric redshifts has become essential for the exploitation of multi-band extragalactic surveys. While the requirements on photo-zs for the study of galaxy evolution mostly pertain to the precision and to the fraction…

Cosmology and Nongalactic Astrophysics · Physics 2024-01-17 Euclid Collaboration , Stéphane Paltani , J. Coupon , W. G. Hartley , A. Alvarez-Ayllon , F. Dubath , J. J. Mohr , M. Schirmer , J. -C. Cuillandre , G. Desprez , O. Ilbert , K. Kuijken , N. Aghanim , B. Altieri , A. Amara , N. Auricchio , M. Baldi , R. Bender , C. Bodendorf , D. Bonino , E. Branchini , M. Brescia , J. Brinchmann , S. Camera , V. Capobianco , C. Carbone , V. F. Cardone , J. Carretero , F. J. Castander , M. Castellano , S. Cavuoti , R. Cledassou , G. Congedo , C. J. Conselice , L. Conversi , Y. Copin , L. Corcione , F. Courbin , M. Cropper , A. Da Silva , H. Degaudenzi , J. Dinis , M. Douspis , X. Dupac , S. Dusini , S. Farrens , S. Ferriol , P. Fosalba , M. Frailis , E. Franceschi , P. Franzetti , S. Galeotta , B. Garilli , W. Gillard , B. Gillis , C. Giocoli , A. Grazian , S. V. Haugan , H. Hoekstra , A. Hornstrup , P. Hudelot , K. Jahnke , M. Kümmel , S. Kermiche , A. Kiessling , M. Kilbinger , T. Kitching , R. Kohley , B. Kubik , M. Kunz , H. Kurki-Suonio , S. Ligori , P. B. Lilje , I. Lloro , E. Maiorano , O. Mansutti , O. Marggraf , K. Markovic , F. Marulli , R. Massey , D. C. Masters , S. Maurogordato , H. J. McCracken , E. Medinaceli , S. Mei , M. Melchior , M. Meneghetti , E. Merlin , G. Meylan , M. Moresco , L. Moscardini , E. Munari , S. -M. Niemi , J. Nightingale , C. Padilla , F. Pasian , K. Pedersen , W. J. Percival , V. Pettorino , G. Polenta , M. Poncet , L. A. Popa , F. Raison , R. Rebolo , A. Renzi , J. Rhodes , G. Riccio , E. Romelli , M. Roncarelli , E. Rossetti , R. Saglia , D. Sapone , B. Sartoris , P. Schneider , A. Secroun , C. Sirignano , G. Sirri , J. Skottfelt , L. Stanco , J. -L. Starck , C. Surace , P. Tallada-Crespí , I. Tereno , R. Toledo-Moreo , F. Torradeflot , I. Tutusaus , E. A. Valentijn , L. Valenziano , T. Vassallo , Y. Wang , G. Zamorani , J. Zoubian , S. Andreon , H. Aussel , S. Bardelli , M. Bolzonella , A. Boucaud , D. Di Ferdinando , M. Farina , J. Graciá-Carpio , V. Lindholm , D. Maino , N. Mauri , C. Neissner , V. Scottez , E. Zucca , C. Baccigalupi , M. Ballardini , A. Biviano , A. Blanchard , S. Borgani , A. S. Borlaff , C. Burigana , R. Cabanac , A. Cappi , C. S. Carvalho , S. Casas , G. Castignani , K. Chambers , A. R. Cooray , H. M. Courtois , O. Cucciati , S. Davini , G. De Lucia , H. Dole , J. A. Escartin , S. Escoffier , F. Finelli , S. Fotopoulou , K. Ganga , K. George , G. Gozaliasl , H. Hildebrandt , I. Hook , A. Jimenez Muñoz , B. Joachimi , V. Kansal , E. Keihanen , C. C. Kirkpatrick , A. Loureiro , J. Macias-Perez , G. Maggio , M. Magliocchetti , R. Maoli , S. Marcin , M. Martinelli , N. Martinet , S. Matthew , L. Maurin , R. B. Metcalf , P. Monaco , G. Morgante , S. Nadathur , A. A. Nucita , L. Patrizii , J. E. Pollack , V. Popa , C. Porciani , D. Potter , A. Pourtsidou , L. Pozzetti , M. Pöntinen , P. Reimberg , A. G. Sánchez , Z. Sakr , E. Sefusatti , M. Sereno , A. Spurio Mancini , J. Stadel , J. Steinwagner , R. Teyssier , C. Valieri , J. Valiviita , S. E. van Mierlo , A. Veropalumbo , M. Viel , J. R. Weaver

Photometric Redshift Forecast for 7-Dimensional Sky Survey

We investigate the expected accuracy of redshifts that can be obtained using low-resolution spectroscopic (medium-band) data from the 7-Dimensional Sky Survey (7DS). By leveraging 40 densely sampled filters with widths of full width at half…

Astrophysics of Galaxies · Physics 2025-10-01 Eunhee Ko , Myungshin Im , Yujin Yang , Ji Hoon Kim , Seong-Kook Lee , Gregory S. -H. Paek

Photometric redshifts for the Pan-STARRS1 survey

We present a robust method to estimate the redshift of galaxies using Pan-STARRS1 photometric data. Our method is an adaptation of the one proposed by Beck et al. (2016) for the SDSS Data Release 12. It uses a training set of 2313724…

Astrophysics of Galaxies · Physics 2020-10-14 Paula Tarrío , Stefano Zarattini

Assessing the photometric redshift precision of the S-PLUS survey: the Stripe-82 as a test-case

In this paper we present a thorough discussion about the photometric redshift (photo-z) performance of the Southern Photometric Local Universe Survey (S-PLUS). This survey combines a 7 narrow + 5 broad passband filter system, with a typical…

Astrophysics of Galaxies · Physics 2020-06-17 A. Molino , M. V. Costa-Duarte , L. Sampedro , F. R. Herpich , L. Sodré , C. Mendes de Oliveira , W. Schoenell , C. E. Barbosa , C. Queiroz , E. V. R. Lima , L. Azanha , N. Muñoz-Elgueta , T. Ribeiro , A. Kanaan , J. A. Hernandez-Jimenez , A. Cortesi , S. Akras , R. Lopes de Oliveira , S. Torres-Flores , C. Lima-Dias , J. L. Nilo Castellon , G. Damke , A. Alvarez-Candal , Y. Jiménez-Teja , P. Coelho , E. Pereira , A. D. Montero-Dorta , N. Benítez , T. S. Gonçalves , L. Santana-Silva , S. V. Werner , L. A. Almeida , P. A. A. Lopes , A. L. Chies-Santos , E. Telles , Thom de Souza , R. C. , D. R. Gonçalves , R. S. de Souza , M. Makler , V. M. Placco , L. M. I. Nakazono , R. K. Saito , R. A. Overzier , L. R. Abramo

Cosmic Shear Analysis with CFHTLS Deep data

We present the first cosmic shear measurements obtained from the T0001 release of the Canada-France-Hawaii Telescope Legacy Survey. The data set covers three uncorrelated patches (D1, D3 and D4) of one square degree each observed in u*, g',…

Astrophysics · Physics 2009-11-11 E. Semboloni , Y. Mellier , L. van Waerbeke , H. Hoekstra , I. Tereno , K. Benabed , S. Gwyn , L. Fu , M. J. Hudson , R. Maoli , L. Parker

Improving Photometric Redshift Estimation for CSST Mock Catalog Using SED Templates Calibrated with Perturbation Algorithm

Photometric redshifts of galaxies obtained by multi-wavelength data are widely used in photometric surveys because of its high efficiency. Although various methods have been developed, template fitting is still adopted as one of the most…

Cosmology and Nongalactic Astrophysics · Physics 2025-04-11 Yicheng Li , Liping Fu , Zhu Chen , Zhijian Luo , Wei Du , Yan Gong , Xianmin Meng , Junhao Lu , Zhirui Tang , Pengfei Chen , Shaohua Zhang , Chenggang Shu , Xingchen Zhou , Zuhui Fan

Reducing distance errors for standard candles and standard sirens with weak-lensing shear and flexion maps

Gravitational lensing induces significant errors in the measured distances to high-redshift standard candles and standard sirens such as type-Ia supernovae, gamma-ray bursts, and merging supermassive black hole binaries. There will…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 Stefan Hilbert , Jonathan R. Gair , Lindsay J. King

Leveraging 3D-HST Grism Redshifts to Quantify Photometric Redshift Performance

We present a study of photometric redshift accuracy in the 3D-HST photometric catalogs, using 3D-HST grism redshifts to quantify and dissect trends in redshift accuracy for galaxies brighter than $H_{F140W}<24$ with an unprecedented and…

Astrophysics of Galaxies · Physics 2016-05-25 Rachel Bezanson , David A. Wake , Gabriel B. Brammer , Pieter G. van Dokkum , Marijn Franx , Ivo Labbé , Joel Leja , Ivelina G. Momcheva , Erica J. Nelson , Ryan F. Quadri , Rosalind E. Skelton , Benjamin J. Weiner , Katherine E. Whitaker

Dark Energy Survey Year 3 Results: Cosmology from Cosmic Shear and Robustness to Data Calibration

This work, together with its companion paper, Secco and Samuroff et al. (2021), presents the Dark Energy Survey Year 3 cosmic shear measurements and cosmological constraints based on an analysis of over 100 million source galaxies. With the…

Cosmology and Nongalactic Astrophysics · Physics 2022-10-03 A. Amon , D. Gruen , M. A. Troxel , N. MacCrann , S. Dodelson , A. Choi , C. Doux , L. F. Secco , S. Samuroff , E. Krause , J. Cordero , J. Myles , J. DeRose , R. H. Wechsler , M. Gatti , A. Navarro-Alsina , G. M. Bernstein , B. Jain , J. Blazek , A. Alarcon , A. Ferté , M. Raveri , P. Lemos , A. Campos , J. Prat , C. Sánchez , M. Jarvis , O. Alves , F. Andrade-Oliveira , E. Baxter , K. Bechtol , M. R. Becker , S. L. Bridle , H. Camacho , A. Campos , A. Carnero Rosell , M. Carrasco Kind , R. Cawthon , C. Chang , R. Chen , P. Chintalapati , M. Crocce , C. Davis , H. T. Diehl , A. Drlica-Wagner , K. Eckert , T. F. Eifler , J. Elvin-Poole , S. Everett , X. Fang , P. Fosalba , O. Friedrich , G. Giannini , R. A. Gruendl , I. Harrison , W. G. Hartley , K. Herner , H. Huang , E. M. Huff , D. Huterer , N. Kuropatkin , P. -F. Leget , A. R. Liddle , J. McCullough , J. Muir , S. Pandey , Y. Park , A. Porredon , A. Refregier , R. P. Rollins , A. Roodman , R. Rosenfeld , A. J. Ross , E. S. Rykoff , J. Sanchez , I. Sevilla-Noarbe , E. Sheldon , T. Shin , A. Troja , I. Tutusaus , T. N. Varga , N. Weaverdyck , B. Yanny , B. Yin , Y. Zhang , J. Zuntz , M. Aguena , S. Allam , J. Annis , D. Bacon , E. Bertin , S. Bhargava , D. Brooks , E. Buckley-Geer , D. L. Burke , J. Carretero , M. Costanzi , L. N. da Costa , M. E. S. Pereira , J. De Vicente , S. Desai , J. P. Dietrich , P. Doel , I. Ferrero , B. Flaugher , J. Frieman , J. García-Bellido , E. Gaztanaga , D. W. Gerdes , T. Giannantonio , J. Gschwend , G. Gutierrez , S. R. Hinton , D. L. Hollowood , K. Honscheid , B. Hoyle , D. J. James , R. Kron , K. Kuehn , O. Lahav , M. Lima , H. Lin , M. A. G. Maia , J. L. Marshall , P. Martini , P. Melchior , F. Menanteau , R. Miquel , J. J. Mohr , R. Morgan , R. L. C. Ogando , A. Palmese , F. Paz-Chinchón , D. Petravick , A. Pieres , A. A. Plazas Malagón , A. K. Romer , E. Sanchez , V. Scarpine , M. Schubnell , S. Serrano , M. Smith , M. Soares-Santos , E. Suchyta , G. Tarle , D. Thomas , C. To , J. Weller

Simulating the Effect of Non-Linear Mode-Coupling in Cosmological Parameter Estimation

Fisher Information Matrix methods are commonly used in cosmology to estimate the accuracy that cosmological parameters can be measured with a given experiment, and to optimise the design of experiments. However, the standard approach…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 A. Kiessling , A. N. Taylor , A. F. Heavens

Dark Energy Survey Year 1 Results: Redshift distributions of the weak lensing source galaxies

We describe the derivation and validation of redshift distribution estimates and their uncertainties for the galaxies used as weak lensing sources in the Dark Energy Survey (DES) Year 1 cosmological analyses. The Bayesian Photometric…

Cosmology and Nongalactic Astrophysics · Physics 2018-05-15 B. Hoyle , D. Gruen , G. M. Bernstein , M. M. Rau , J. De Vicente , W. G. Hartley , E. Gaztanaga , J. DeRose , M. A. Troxel , C. Davis , A. Alarcon , N. MacCrann , J. Prat , C. Sánchez , E. Sheldon , R. H. Wechsler , J. Asorey , M. R. Becker , C. Bonnett , A. Carnero Rosell , D. Carollo , M. Carrasco Kind , F. J. Castander , R. Cawthon , C. Chang , M. Childress , T. M. Davis , A. Drlica-Wagner , M. Gatti , K. Glazebrook , J. Gschwend , S. R. Hinton , J. K. Hoormann , A. G. Kim , A. King , K. Kuehn , G. Lewis , C. Lidman , H. Lin , E. Macaulay , M. A. G. Maia , P. Martini , D. Mudd , A. Möller , R. C. Nichol , R. L. C. Ogando , R. P. Rollins , A. Roodman , A. J. Ross , E. Rozo , E. S. Rykoff , S. Samuroff , I. Sevilla-Noarbe , R. Sharp , N. E. Sommer , B. E. Tucker , S. A. Uddin , T. N. Varga , P. Vielzeuf , F. Yuan , B. Zhang , T. M. C. Abbott , F. B. Abdalla , S. Allam , J. Annis , K. Bechtol , A. Benoit-Lévy , E. Bertin , D. Brooks , E. Buckley-Geer , D. L. Burke , M. T. Busha , D. Capozzi , J. Carretero , M. Crocce , C. B. D'Andrea , L. N. da Costa , D. L. DePoy , S. Desai , H. T. Diehl , P. Doel , T. F. Eifler , J. Estrada , A. E. Evrard , E. Fernandez , B. Flaugher , P. Fosalba , J. Frieman , J. García-Bellido , D. W. Gerdes , T. Giannantonio , D. A. Goldstein , R. A. Gruendl , G. Gutierrez , K. Honscheid , D. J. James , M. Jarvis , T. Jeltema , M. W. G. Johnson , M. D. Johnson , D. Kirk , E. Krause , S. Kuhlmann , N. Kuropatkin , O. Lahav , T. S. Li , M. Lima , M. March , J. L. Marshall , P. Melchior , F. Menanteau , R. Miquel , B. Nord , C. R. O'Neill , A. A. Plazas , A. K. Romer , M. Sako , E. Sanchez , B. Santiago , V. Scarpine , R. Schindler , M. Schubnell , M. Smith , R. C. Smith , M. Soares-Santos , F. Sobreira , E. Suchyta , M. E. C. Swanson , G. Tarle , D. Thomas , D. L. Tucker , V. Vikram , A. R. Walker , J. Weller , W. Wester , R. C. Wolf , B. Yanny , J. Zuntz

Photo-z for weak lensing tomography from space: the role of optical and near-IR photometry

We study in detail the photometric redshift requirements needed for tomographic weak gravitational lensing in order to measure accurately the Dark Energy equation of state. In particular, we examine how ground-based photometry (u,g,r,i,z,y)…

Astrophysics · Physics 2009-12-15 F. B. Abdalla , A. Amara , P. Capak , E. S. Cypriano , O. Lahav , J. Rhodes

Tolerance For the Pixelation Effect in Shear Measurement

Images taken by space telescopes typically have a superb spatial resolution, but a relatively poor sampling rate due to the finite CCD pixel size. Beyond the Nyquist limit, it becomes uncertain how much the pixelation effect may affect the…

Cosmology and Nongalactic Astrophysics · Physics 2022-06-06 Zhi Shen , Jun Zhang , Hekun Li , Haoran Wang , Chengliang Wei , Guoliang Li , Xiaobo Li , Zhang Ban , Dan Yue