Optical Images and Source Catalog of AKARI North Ecliptic Pole Wide Survey Field

Abstract

We present the source catalog and the properties of the $B-,R-$, and $I-$band images obtained to support the {\it AKARI} North Ecliptic Pole Wide (NEP-Wide) survey. The NEP-Wide is an {\it AKARI} infrared imaging survey of the north ecliptic pole covering a 5.8 deg${}^2$ area over 2.5 -- 6 $\micron$ wavelengths. The optical imaging data were obtained at the Maidanak Observatory in Uzbekistan using the Seoul National University 4k $\times$ 4k Camera on the 1.5m telescope. These images cover 4.9 deg${}^2$ where no deep optical imaging data are available. Our $B-,R-$, and $I-$band data reach the depths of $\sim$23.4, $\sim$23.1, and $\sim$22.3 mag (AB) at 5$\sigma$, respectively. The source catalog contains 96,460 objects in the $R-$band, and the astrometric accuracy is about 0.15$\arcsec$ at 1$\sigma$ in each RA and Dec direction. These photometric data will be useful for many studies including identification of optical counterparts of the infrared sources detected by {\it AKARI}, analysis of their spectral energy distributions from optical through infrared, and the selection of interesting objects to understand the obscured galaxy evolution.

39 pages, 12 figures

References in corpus (7)

• The Cosmic Evolution Survey (COSMOS) -- Overview
• Multi-Wavelength Constraints on the Cosmic Star Formation History from Spectroscopy: the Rest-Frame UV, H-alpha, and Infrared Luminosity Functions at Redshifts 1.9<z<3.4
• Star Formation and the Growth of Stellar Mass
• IRS Spectroscopy and Multi-wavelength Study of Luminous Star-forming Galaxies at z~1.9
• An Optical Source Catalog of the North Ecliptic Pole Region
• Deep u*- and g-band Imaging of the Spitzer Space Telescope First Look Survey Field : Observations and Source Catalogs
• Massive Lyman Break Galaxies at z~3 in the Spitzer Extragalactic First Look Survey