SPLASH-SXDF Multi-wavelength Photometric Catalog

Vihang Mehta, Claudia Scarlata, Peter Capak, Iary Davidzon, Andreas Faisst, Bau Ching Hsieh, Olivier Ilbert, Matt Jarvis, Clotilde Laigle, John Phillips, John Silverman, Michael A. Strauss, Masayuki Tanaka, Rebecca Bowler, Jean Coupon, Sébastien Foucaud, Shoubaneh Hemmati, Daniel Masters, Henry Joy McCracken, Bahram MobasherMasami Ouchi, Takatoshi Shibuya, Wei Hao Wang

Research output: Contribution to journalArticlepeer-review

35 Scopus citations


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 deg2, with ∼800,000 objects in the 2.4 deg2 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.

Original languageEnglish (US)
Article number36
JournalAstrophysical Journal, Supplement Series
Issue number2
StatePublished - Apr 2018

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science


  • catalogs
  • galaxies: high-redshift
  • galaxies: photometry
  • methods: observational
  • techniques: photometric


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