Near Infrared Imaging of the Hubble Deep Field with The Keck Telescope
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چکیده
Two deep K-band (2.2 μm) images, with point-source detection limits of K = 25.2 mag (one sigma), taken with the Keck Telescope in subfields of the Hubble Deep Field, are presented and analyzed. A sample of objects to K = 24 mag is constructed and V606 − I814 and I814 −K colors are measured. By stacking visually selected objects, mean I814 −K colors can be measured to very faint levels; the mean I814 −K color is constant with apparent magnitude down to V606 = 28 mag. Subject headings: Cosmology: observations — Galaxies: photometry — Galaxies: statistics — Infrared: galaxies
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تاریخ انتشار 2008