Variations of the Ratio of Total-To-selective Extinction in the Galaxy
Open Astronomy, 2003 The results of the study of variations of total-to-selective extinction RV near the Galactic plane (-12° ≤ b ≤+12°) are presented. It is shown that variations of RV range from 1.9 to 3.4 and it is not possible to determine its typical value for the ...
Sūdžius J., Raudeliūnas S.
doaj +1 more source
SuperNova Acceleration Probe (SNAP): Investigating Photometric Redshift Optimization [PDF]
, 2007 The aim of this paper is to investigate ways to optimize the accuracy of photometric redshifts for a SNAP like mission. We focus on how the accuracy of the photometric redshifts depends on the magnitude limit and signal-to-noise ratio, wave-length ...
Arnouts, Stephane +7 more
core +2 more sources
3D-HST WFC3-SELECTED PHOTOMETRIC CATALOGS IN THE FIVE CANDELS/3D-HST FIELDS: PHOTOMETRY, PHOTOMETRIC REDSHIFTS, AND STELLAR MASSES [PDF]
, 2014 The 3D-HST and CANDELS programs have provided WFC3 and ACS spectroscopy and photometry over ≈900 arcmin2 in five fields: AEGIS, COSMOS, GOODS-North, GOODS-South, and the UKIDSS UDS field.
R. Skelton +26 more
semanticscholar +1 more source
Combining Aperture and PSF-Fitting Photometry
Open Astronomy, 2003 The multiple object and multiple frame (MOMF) CCD photometry package, that combines the advantages of aperture and PSF photometry is described. Results from comparisons with other programs are given; no other photometry package was found to give better ...
Handler G.
doaj +1 more source
Evaluating the V-band Photometric Metallicity with Fundamental Mode RR Lyrae in the Kepler Field [PDF]
, 2022 The aim of this work is to evaluate the performance of photometric metallicity [Fe/H], determined based on V-band light-curves photometrically transformed from the gr-band light-curves. We tested this by using a set of homogeneous sample of fundamental mode RR Lyrae located in the Kepler field.
arxiv +1 more source
SDSS Standard Star Catalog for Stripe 82: the Dawn of Industrial 1% Optical Photometry [PDF]
, 2007 We describe a standard star catalog constructed using multiple SDSS photometric observations (at least four per band, with a median of ten) in the $ugriz$ system.
Allyn Smith, J. +30 more
core +2 more sources
Photometric Redshifts for Hyper Suprime-Cam Subaru Strategic Program Data Release 1 [PDF]
, 2017 We present a description of the second data release for the photometric redshift (photo-$z$) of the Subaru Strategic Program for the Hyper-Suprime Cam survey.
Masayuki Tanaka +8 more
semanticscholar +1 more source
Photometric redshifts from SDSS images using a convolutional neural network [PDF]
Astronomy & Astrophysics, 2018 We developed a deep convolutional neural network (CNN), used as a classifier, to estimate photometric redshifts and associated probability distribution functions (PDF) for galaxies in the Main Galaxy Sample of the Sloan Digital Sky Survey at z < 0.4 ...
Johanna Pasquet +4 more
semanticscholar +1 more source
Photometric calibration methods for wide-field photometric surveys
SCIENTIA SINICA Physica, Mechanica & Astronomica, 2022 Uniform and accurate photometric calibration plays an important role in the current and next-generation wide-field imaging surveys. Herein, we review the modern photometric calibration methods, including the classic standard star method, "hardware/observation-driven" methods (such as the Ubercalibration, Hypercalibration, and Forward Global Calibration
Huang, Bowen, Xiao, Kai, Yuan, Haibo
openaire +2 more sources
On the Accuracy of Gaia Photometry
Open Astronomy, 2003 The errors of Gaia photometry originating from tolerancies of the light filter mean wavelengths and half-widths are investigated.
Abromavičius G. +3 more
doaj +1 more source