NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2018-12-17 T01:29:53 PST
Help | Comment | NED Home

For refcode 2007ApJS..172..583H:
There are 56626 NED objects in this reference.
Please click here for ADS abstract

NED Abstract

Copyright by American Astronomical Society. Reproduced by permission
2007ApJS..172..583H An Optical Source Catalog of the North Ecliptic Pole Region Narae Hwang, Myung Gyoon Lee, Hyung Mok Lee, Myungshin Im, Taehyun Kim, Hideo Matsuhara, Takehiko Wada, Shinki Oyabu, Soojong Pak, Moo-Young Chun, Hidenori Watarai, Takao Nakagawa, Chris Pearson, Toshinobu Takagi, Hitoshi Hanami, and Glenn J. White Abstract. We present a five-band (u^*^, g', r', i', z') optical photometry catalog of the sources in the north ecliptic pole (NEP) region based on deep observations made with MegaCam at CFHT. The source catalog covers about 2 square degree area centered at the NEP and reaches depths of about 26 mag for u*, g', r' bands, about 25 mag for i' band, and about 24 mag for z' band (4 {sigma} detection over a 1" aperture). The total number of cataloged sources brighter than r'=23 mag is about 56,000 including both point sources and extended sources. From the investigation of photometric properties using the color-magnitude diagrams and color-color diagrams, we have found that the colors of extended sources are mostly (u^*^-r')<3.0 and (g'-z')>0.5. This can be used to separate the extended sources from the point sources reliably, even for the faint source domain where typical morphological classification schemes hardly work efficiently. We have derived an empirical color-redshift relation of the red sequence galaxies using the Sloan Digital Sky Survey data. By applying this relation to our photometry catalog and searching for any spatial overdensities, we have found two galaxy clusters and one nearby galaxy group. Key words: Catalogs, Galaxies: Clusters: General, Galaxies: General, Galaxies: Photometry
There are 56626 NED objects in this reference.
Please click here for ADS abstract

Back to NED Home