Results 101 to 110 of about 47,826 (245)

Cross-correlation redshift calibration without spectroscopic calibration samples in DES science verification data [PDF]

, 2017
Galaxy cross-correlations with high-fidelity redshift samples hold the potential to precisely calibrate systematic photometric redshift uncertainties arising from the unavailability of complete and representative training and validation samples of ...
Abbott, TMC, Abdalla, FB, Alarcon, A, Allam, S, Annis, J, Bechtol, K, Benoit-Lévy, A, Bertin, E, Brooks, D, Buckley-Geer, E, Burke, DL, Carnero Rosell, A, Carretero, J, Castander, FJ, Cawthon, R, Crocce, M, Cunha, CE, D'Andrea, CB, da Costa, LN, Davis, C, DES Collaboration, ., Desai, S, Diehl, HT, Doel, P, Drlica-Wagner, A, Fausti Neto, A, Flaugher, B, Fosalba, P, Frieman, J, Garćia-Bellido, J, Gatti, M, Gaztanaga, E, Gerdes, DW, Giannantonio, T, Gruen, D, Gruendl, RA, Gutierrez, G, Honscheid, K, Jain, B, James, DJ, Jeltema, T, Kind, MC, Krause, E, Kuehn, K, Kuhlmann, S, Kuropatkin, N, Lahav, O, Li, TS, Lima, M, Lin, H, March, M, Marshall, JL, Martini, P, Melchior, P, Miquel, R, Ogando, RLC, Plazas, AA, Romer, AK, Roodman, A, Rozo, E, Rykoff, ES, Sanchez, E, Scarpine, V, Schindler, R, Schubnell, M, Sevilla-Noarbe, I, Smith, M, Soares-Santos, M, Sobreira, F, Suchyta, E, Swanson, MEC, Tarle, G, Thomas, D, Troxel, MA, Vielzeuf, P, Vikram, V, Walker, AR, Wechsler, RH   +77 more
core   +6 more sources

Robust joint modelling of sparsely observed paired functional data

Canadian Journal of Statistics, Volume 52, Issue 3, Page 734-754, September 2024.
Abstract A reduced‐rank mixed‐effects model is developed for robust modelling of sparsely observed paired functional data. In this model, the curves for each functional variable are summarized using a few functional principal components, and the association of the two functional variables is modelled through the association of the principal component ...
Huiya Zhou, Xiaomeng Yan, Lan Zhou
wiley   +1 more source

On the Number of Galaxies at High Redshift

Galaxies, 2015
The number of galaxies at a given flux as a function of the redshift, z, is derived when the z-distance relation is non-standard. In order to compare different models, the same formalism is also applied to the standard cosmology.
Lorenzo Zaninetti
doaj   +1 more source

A cross-correlation-based estimate of the galaxy luminosity function

, 2018
We extend existing methods for using cross-correlations to derive redshift distributions for photometric galaxies, without using photometric redshifts.
van Daalen, Marcel P., White, Martin
core   +1 more source

ImpZ: a new photometric redshift code for galaxies and quasars [PDF]

, 2004
We present a combined galaxy-quasar approach to template-fitting photometric redshift techniques and show the method to be a powerful one. The code (ImpZ) is presented, developed and applied to two spectroscopic redshift catalogues, namely the Isaac ...
Abazajian, Ball, Barger, Benítez, Benítez, Berta, Berta, Bolzonella, Brandt, Bressan, Brodwin, Brotherton, Bruzual, Budavári, Calzetti, Calzetti, Carballo, Cardelli, Coleman, Cristiani, D. M. Salaman, Dickinson, E. Gonzalez-Solares, Ferland, Fioc, Fitzpatrick, Francis, Francis, Giallongo, Gregg, Gwyn, Hatziminaoglou, Hogg, I. Pérez-Fournon, Jaynes, Kodama, Le Borgne, Leitherer, Lin, Lonsdale, M. Irwin, M. Polletta, M. Rowan-Robinson, Madau, Madau, Madau, Massarotti, McMahon, Meurer, Miller, Mobasher, Mobasher, Natali, Oliver, Pickles, Poggianti, Press, Richards, Richards, Richards, Rowan-Robinson, Rowan-Robinson, Rowan-Robinson, Rowan-Robinson, S. Berta, S. J. Weatherley, S. Oliver, Savage, Sawicki, Schneider, Seaton, Steidel, Steidel, T. S. R. Babbedge, Thompson, Vanden Berk, Wang, Webster, Wolf, Wu, York, Yoshii, Zheng   +82 more
core   +5 more sources

An Indacenodithieno[3,2‐b]thiophene‐based Organic Dye for P‐type Dye‐Sensitized Solar Cells and Photoelectrochemical H2O2 Production

ChemPhotoChem, Volume 8, Issue 7, July 2024.
A novel organic dye featuring an indacenodithieno[3,2‐b]thiophene unit as the π‐bridge, labeled as YB6, has been designed for p‐type dye‐sensitized solar cells (p‐DSCs) and photoelectrochemical H2O2 production. Remarkably, it exhibits superior performance compared to the reference PB6 dye.
Bin Cai, Sina Wrede, Sicong Wang, Lars Kloo, Gerrit Boschloo, Haining Tian   +5 more
wiley   +1 more source

Optimising cosmic shear surveys to measure modifications to gravity on cosmic scales

, 2011
We consider how upcoming photometric large scale structure surveys can be optimized to measure the properties of dark energy and possible cosmic scale modifications to General Relativity in light of realistic astrophysical and instrumental systematic ...
Albrecht, Amara, Bacon, Baugh, Bean, Benjamin, Bernstein, Beynon, Blake, Bordoloi, Bridle, Carroll, Cunha, Donnacha Kirk, Dunkley, Dvali, Eisenstein, Fu, Hetterscheidt, Hirata, Hoekstra, Hu, Huterer, Ishak, Istvan Laszlo, Jain, Joachimi, Kaiser, Laszlo, Laszlo, Le Fèvre, Ma, Massey, Peacock, Rachel Bean, Sarah Bridle, Schrabback, Skordis, Smail, Smith, van Waerbeke, Van Waerbeke, Wittman, Zhang   +43 more
core   +1 more source

Photometric Redshift Biases from Galaxy Evolution [PDF]

, 2010
Proposed cosmological surveys will make use of photometric redshifts of galaxies that are significantly fainter than any complete spectroscopic redshift surveys that exist to train the photo-z methods.
C. Jonathan MacDonald, Gary Bernstein, Huterer D.   +2 more
core   +3 more sources

Smart bistable coordination complexes

Smart Molecules, Volume 2, Issue 2, June 2024.
Smart bistable complexes play a vital role in various applications such as sensors, data storage, spintronics, smart windows, optical switches, information encryption and decryption, displays, actuators, and so on. In this review, we summarize smart bistable complexes in terms of external stimulus approach and discuss their design guidelines ...
Xiong Xiao, Zong‐Ju Chen, Russell J. Varley, Cheng‐Hui Li   +3 more
wiley   +1 more source

Photometric Redshift Estimation Using Scaled Ensemble Learning

The 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, Shubhrangshu Ghosh, Avyarthana Ghosh, Yogesh Wadadekar, Abhishek Roy Choudhury, Arijit Mukherjee, Shailesh Deshpande, Arpan Pal   +7 more
doaj   +1 more source