Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aas...195.0903h&link_type=abstract
American Astronomical Society, 195th AAS Meeting, #09.03; Bulletin of the American Astronomical Society, Vol. 31, p.1384
Astronomy and Astrophysics
Astronomy
Scientific paper
Images of the Hubble Deep Field at 3.2 μm , taken with the 10-m Keck Telescope, are presented. The images cover a total area of 2.5 arcmin2. 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 1.3x 104 deg-2 to this depth. The sources detected at 3.2 μm have a median redshift of z= 0.56. All 3.2 μm sources have 1.6 μm , 1.1 μm and visual counterparts, all of fairly regular morphologies; several also have 6.7 μm , 15 μm , 850 μm , 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 μm data seemed likely. Financial support was provided by NASA and the NSF.
Cohen Judith Gamora
Dickinson Mark Everett
Djorgovski Stanislav G.
Hogg David Wardell
Matthews Keith
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