Results 101 to 110 of about 335,375 (390)

ASTROMETRIC REDSHIFTS FOR QUASARS [PDF]

The Astronomical Journal, 2009
The wavelength dependence of atmospheric refraction causes differential chromatic refraction (DCR), whereby objects imaged at different optical/UV wavelengths are observed at slightly different positions in the plane of the detector. Strong spectral features induce changes in the effective wavelengths of broad-band filters that are capable of producing
Gordon T. Richards, Michael C. Kaczmarczik, David J. Schlegel, Sajjan S. Mehta   +3 more
openaire   +3 more sources

Dark Energy Survey Year 1 Results: redshift distributions of the weak-lensing source galaxies [PDF]

Monthly notices of the Royal Astronomical Society, 2017
We describe the derivation and validation of redshift distribution estimates and their uncertainties for the populations of galaxies used as weak-lensing sources in the Dark Energy Survey (DES) Year 1 cosmological analyses.
B. Hoyle, D. Gruen, G. Bernstein, M. Rau, J. Vicente, W. Hartley, E. Gaztañaga, J. DeRose, M. Troxel, C. Davis, A. Alarcon, N. MacCrann, J. Prat, C. S'anchez, E. Sheldon, Risa Wechsler, J. Asorey, M. Becker, C. Bonnett, A. Rosell, D. Carollo, M. Kind, F. Castander, R. Cawthon, C. Chang, M. Childress, T. Davis, A. Drlica-Wagner, M. Gatti, K. Glazebrook, J. Gschwend, S. Hinton, J. Hoormann, A. Kim, A. King, K. Kuehn, G. Lewis, C. Lidman, H. Lin, E. MacAulay, M. Maia, P. Martini, D. Mudd, A. Moller, R. Nichol, R. Ogando, R. Rollins, A. Roodman, A. Ross, E. Rozo, E. Rykoff, S. Samuroff, I. Sevilla-Noarbe, R. Sharp, N. E. Sommer, B. Tucker, S. Uddin, T. Varga, P. Vielzeuf, F. Yuan, B. Zhang, T. Abbott, F. Abdalla, S. Allam, J. Annis, K. Bechtol, A. Benoit-Lévy, E. Bertin, D. Brooks, E. Buckley-Geer, D. Burke, M. Busha, D. Capozzi, J. Carretero, M. Crocce, C. D'Andrea, L. Costa, D. Depoy, S. Desai, H. Diehl, P. Doel, T. Eifler, J. Estrada, A. Evrard, E. Fernandez, B. Flaugher, P. Fosalba, J. Frieman, J. Garc'ia-Bellido, D. Gerdes, T. Giannantonio, D. Goldstein, R. Gruendl, G. Gutiérrez, K. Honscheid, D. James, M. Jarvis, T. Jeltema, M. Johnson, M. Johnson, D. Kirk, E. Krause, S. Kuhlmann, N. Kuropatkin, O. Lahav, T. Li, M. Lima, M. March, J. Marshall, Peter Melchior, F. Menanteau, R. Miquel, B. Nord, C. O’Neill, A. Plazas, A. Romer, M. Sako, E. Sánchez, B. Santiago, V. Scarpine, R. Schindler, M. Schubnell, M. Smith, R. C. Smith, M. Soares-Santos, F. Sobreira, E. Suchyta, M. Swanson, G. Tarlé, D. Thomas, D. Tucker, V. Vikram, A. Walker, J. Weller, W. Wester, R. Wolf, B. Yanny, J. Zuntz   +137 more
semanticscholar   +1 more source

Making Photoresponsive Metal–Organic Frameworks an Effective Class of Heterogeneous Photocatalyst

Advanced Functional Materials, EarlyView.
This review summarizes photoresponsive MOFs for photocatalytic applications, focusing on their capacity to enhance light harvesting, charge transfer, and surface reactions. While existing studies provide foundational insights, emerging characterization techniques enable a deeper understanding of photoresponsive MOFs.
Rui Liu, Hao Wu, Hoi Ying Chung, Yun Hau Ng   +3 more
wiley   +1 more source

Fast Radio Burst Energy Function in the Presence of DM_host Variation

Universe
Fast radio bursts (FRBs) have been found in great numbers, but the physical mechanism of these sources is still a mystery. The redshift evolutions of the FRB energy distribution function and the volumetric rate shed light on the origin of FRBs.
Ji-Guo Zhang, Yichao Li, Jia-Ming Zou, Ze-Wei Zhao, Jing-Fei Zhang, Xin Zhang   +5 more
doaj   +1 more source

Novel Cosmological Joint Constraints in Multidimensional Observable Space with Redshift-free Inferences

The Astrophysical Journal Supplement Series, 2023
Cosmology constraints serve as a crucial criterion in discriminating cosmological models. The traditional combined method to constrain the cosmological parameters designates the corresponding theoretical value and observational data as functions of ...
Wei Hong, Kang Jiao, Yu-Chen Wang, Tingting Zhang, Tong-Jie Zhang   +4 more
doaj   +1 more source

The Redshift Distribution of Infrared-Faint Radio Sources [PDF]

, 2018
Infrared-Faint Radio Sources (IFRSs) are an important class of high-redshift active galaxy, and potentially important as a means of discovering more high-redshift radio sources, but only 25 IFRSs had redshifts prior to this paper. Here we increase the number of IFRSs with known spectroscopic redshifts by a factor of about 5 to 131, with redshifts up to
arxiv   +1 more source

Using Galaxy Two-point Correlation Functions to Determine the Redshift Distributions of Galaxies Binned by Photometric Redshift [PDF]

Astrophys.J.651:14-23,2006, 2006
We investigate how well the redshift distributions of galaxies sorted into photometric redshift bins can be determined from the galaxy angular two-point correlation functions. We find that the uncertainty in the reconstructed redshift distributions depends critically on the number of parameters used in each redshift bin and the range of angular scales ...
arxiv   +1 more source

Stars were born in significantly denser regions in the early Universe [PDF]

, 2014
The density of the warm ionized gas in high-redshift galaxies is known to be higher than what is typical in local galaxies on similar scales. At the same time, the mean global properties of the high- and low-redshift galaxies are quite different.
Brinchmann, Jarle, Rahmati, Alireza, Shirazi, Maryam   +2 more
core   +1 more source

The mass–concentration–redshift relation of cold and warm dark matter haloes [PDF]

, 2016
We use a suite of cosmological simulations to study the mass–concentration–redshift relation, c(M, z), of dark matter haloes. Our simulations include standard Λ-cold dark matter (CDM) models, and additional runs with truncated power spectra, consistent ...
A. Ludlow, S. Bose, R. Angulo, Lang Wang, W. Hellwing, J. Navarro, S. Cole, C. Frenk   +7 more
semanticscholar   +1 more source

Dark Energy Survey Year 1 results: measurement of the baryon acoustic oscillation scale in the distribution of galaxies to redshift 1 [PDF]

Monthly notices of the Royal Astronomical Society, 2017
We present angular diameter distance measurements obtained by locating the baryon acoustic oscillations (BAO) scale in the distribution of galaxies selected from the first year of Dark Energy Survey data.
T. Abbott, F. Abdalla, A. Alarcon, S. Allam, F. Andrade-Oliveira, J. Annis, S. Ávila, M. Banerji, N. Banik, K. Bechtol, G. Bernstein, R. Bernstein, E. Bertin, D. Brooks, E. Buckley-Geer, D. Burke, H. Camacho, A. Rosell, M. Kind, J. Carretero, F. Castander, R. Cawthon, K. Chan, M. Crocce, C. Cunha, C. D'Andrea, L. Costa, C. Davis, J. Vicente, D. Depoy, S. Desai, H. Diehl, P. Doel, A. Drlica-Wagner, T. Eifler, J. Elvin-Poole, J. Estrada, A. Evrard, B. Flaugher, P. Fosalba, J. Frieman, J. García-Bellido, E. Gaztañaga, D. Gerdes, T. Giannantonio, D. Gruen, R. Gruendl, J. Gschwend, G. Gutiérrez, W. Hartley, D. Hollowood, K. Honscheid, B. Hoyle, B. Jain, D. James, T. Jeltema, M. Johnson, S. Kent, N. Kokron, E. Krause, K. Kuehn, S. Kuhlmann, N. Kuropatkin, F. Lacasa, O. Lahav, M. Lima, H. Lin, M. Maia, M. Manera, J. Marriner, J. Marshall, P. Martini, Peter Melchior, F. Menanteau, C. Miller, R. Miquel, J. Mohr, E. Neilsen, W. Percival, A. Plazas, A. Porredon, A. Romer, A. Roodman, R. Rosenfeld, A. Ross, E. Rozo, E. Rykoff, M. Sako, E. Sánchez, B. Santiago, V. Scarpine, R. Schindler, M. Schubnell, S. Serrano, I. Sevilla-Noarbe, E. Sheldon, R. C. Smith, M. Smith, F. Sobreira, E. Suchyta, M. Swanson, G. Tarlé, D. Thomas, M. Troxel, D. Tucker, V. Vikram, A. Walker, Risa Wechsler, J. Weller, B. Yanny, Y. Zhang   +110 more
semanticscholar   +1 more source