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19 April 2024 |
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Three-micron imaging of the Hubble Deep Field | | David W. Hogg
; Gerry Neugebauer
; Judith G. Cohen
; Mark Dickinson
; S. G. Djorgovski
; Keith Matthews
; B. T. Soifer
; | | Date: |
26 Oct 1999 | | Subject: | astro-ph | | Affiliation: | IAS), Gerry Neugebauer, Judith G. Cohen (Caltech), Mark Dickinson (STScI), S. G. Djorgovski, Keith Matthews, B. T. Soifer (Caltech | | Abstract: | Images of the Hubble Deep Field at 3.2 um, taken with the 10-m Keck Telescope, are presented. The images cover a total area of ~2.5 arcmin^2. To a 5-sigma limit of [3.2](total)=17.5 mag (Vega-relative), 11 sources are detected, 9 of which are extragalactic. The integrated galaxy number counts are therefore ~1.3x10^4 deg^{-2} to this depth. The galaxies detected at 3.2 um have a median redshift of z=0.56. All 3.2 um sources have 1.6 um, 1.1 um and visual counterparts, all of fairly regular morphologies; several also have 6.7 um, 15 um, 850 um, 8.5 GHz, or 1.4 GHz counterparts. No sources are found which are either anomalously red or anomalously blue in their H-[3.2] color, and there are significant detections of most of the known near-infrared HDF sources for which detection in these 3.2 um data seemed likely. | | Source: | arXiv, astro-ph/9910478 | | Services: | Forum | Review | PDF | Favorites | |
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