J- and Ks-band Galaxy Counts and Color Distributions in the AKARI North Ecliptic Pole Field

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dc.creatorImai, Koji
dc.creatorMatsuhara, Hideo
dc.creatorOyabu, Shinki
dc.creatorWada, Takehiko
dc.creatorTakagi, Toshinobu
dc.creatorFujishiro, Naofumi
dc.creatorHanami, Hitoshi
dc.creatorPearson, Chris P.
dc.date2007-02-09
dc.date.accessioned2026-07-07T11:21:08Z
dc.date.available2026-07-07T11:21:08Z
dc.descriptionWe present the J- and Ks-band galaxy counts and galaxy colors covering 750 square arcminutes in the deep AKARI North Ecliptic Pole (NEP) field, using the FLoridA Multi-object Imaging Near-ir Grism Observational Spectrometer (FLAMINGOS) on the Kitt Peak National Observatory (KPNO) 2.1m telescope. The limiting magnitudes with a signal-to-noise ratio of three in the deepest regions are 21.85 and 20.15 in the J- and Ks-bands respectively in the Vega magnitude system. The J- and Ks-band galaxy counts in the AKARI NEP field are broadly in good agreement with those of other results in the literature, however we find some indication of a change in the galaxy number count slope at J~19.5 and over the magnitude range 18.0 < Ks < 19.5. We interpret this feature as a change in the dominant population at these magnitudes because we also find an associated change in the B - Ks color distribution at these magnitudes where the number of blue samples in the magnitude range 18.5 < Ks < 19.5 is significantly larger than that of Ks < 17.5.
dc.identifierhttps://arxiv.org/abs/astro-ph/0702249
dc.identifierhttp://arxiv.org/abs/astro-ph/0702249
dc.identifierAstron.J.133:2418-2428,2007
dc.identifierdoi:10.1086/513513
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/194174
dc.subjectAstrophysics
dc.titleJ- and Ks-band Galaxy Counts and Color Distributions in the AKARI North Ecliptic Pole Field
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