2017/11/30 by Vihang Mehta, Claudia Scarlata, P. Capak +31 · 2 citations
Physics and Astronomy · #Adaptive optics and wavefront sensing #Astronomy #Astronomy and Astrophysical Research #Astrophysics #Galaxies: Formation, Evolution, Phenomena #Galaxy #Optics #Photometric redshift #Photometry (optics) #Physics #Redshift #Splash #Stars #Subaru Telescope #Wavelength #astro-ph.GA
paper · pdf · doi:10.3847/1538-4365/aab60c
23 pages, 15 figures; accepted for publication in ApJS; comments welcome
arxiv created 2018/03/12 · openalex publication_date 2018/04/01 · arxiv updated 2018/04/25 · openalex created_date 2020/11/23 · openalex updated_date 2026/08/06
Abstract We present a multi-wavelength catalog in the Subaru/ XMM-Newton Deep Field (SXDF) as part of the Spitzer Large Area Survey with Hyper-Suprime-Cam (SPLASH). We include the newly acquired optical data from the Hyper-Suprime-Cam Subaru Strategic Program, accompanied by IRAC coverage from the SPLASH survey. All available optical and near-infrared data is homogenized and resampled on a common astrometric reference frame. Source detection is done using a multi-wavelength detection image including the u -band to recover the bluest objects. We measure multi-wavelength photometry and compute photometric redshifts as well as physical properties for ∼1.17 million objects over ∼4.2 deg 2 , with ∼800,000 objects in the 2.4 deg 2 HSC-Ultra-Deep coverage. Using the available spectroscopic redshifts from various surveys over the range of 0 < z < 6, we verify the performance of the photometric redshifts and we find a normalized median absolute deviation of 0.023 and outlier fraction of 3.2%. The SPLASH-SXDF catalog is a valuable, publicly available resource, perfectly suited for studying galaxies in the early universe and tracing their evolution through cosmic time.