AAS 195th Meeting, January 2000
Session 9. Evolution of Galaxies, Galaxy Surveys
Display, Wednesday, January 12, 2000, 9:20am-6:30pm, Grand Hall

[Previous] | [Session 9] | [Next]

[9.03] Three-micron Imaging of the Hubble Deep Field

D. W. Hogg, G. Neugebauer (IAS), J. G. Cohen (Caltech), M. E. Dickinson, S. G. Djorgovski, K. Matthews (STScI), B. T. Soifer (Caltech)

Images of the Hubble Deep Field at 3.2~{\rm \mu m}, taken with the 10-m Keck Telescope, are presented. The images cover a total area of ~2.5~{\rm arcmin2}. To a 5-sigma limit of [3.2]\rm total\approx 17.5~{\rm mag} (Vega-relative), 11 sources are detected, 9 of which are extragalactic. The integrated galaxy number counts are therefore ~1.3\times 104~{\rm deg-2} to this depth. The sources detected at 3.2~{\rm \mu m} have a median redshift of z= 0.56. All 3.2~{\rm \mu m} sources have 1.6~{\rm \mu m}, 1.1~{\rm \mu m} and visual counterparts, all of fairly regular morphologies; several also have 6.7~{\rm \mu m}, 15~{\rm \mu m}, 850~{\rm \mu m}, 8.5~{\rm GHz}, or 1.4~{\rm 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~{\rm \mu m} data seemed likely.

Financial support was provided by NASA and the NSF.

The author(s) of this abstract have provided an email address for comments about the abstract: hogg@ias.edu

[Previous] | [Session 9] | [Next]