Infrared Star Count Models and Their Application to the Subaru Deep Field

Abstract

We construct infrared star count models of the Galaxy applicable at faint magnitudes. In addition to dwarfs and subdwarfs, we also take into account L dwarfs, T dwarfs, and white dwarfs of both disk and halo. As a test case of the models, we analyze the infrared imaging data at J and K' obtained during the Subaru Deep Field Survey to study stellar objects. Infrared star count models we have obtained predict that the Next Generation Space Telescope will primarily see T dwarfs, M subdwarfs, and old halo white dwarfs at faint magnitudes.

20 pages, 3 figures. To be published in the November 2000 issue of the Astronomical Journal

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• A First Site of Galaxy Cluster Formation: Complete Spectroscopy of a Protocluster at $z=6.01$
• Radius-expansion burst spectra from 4U 1728-34: an ultracompact binary?
• Hyper Extremely Red Objects in the Subaru Deep Field: Evidence for Primordial Elliptical Galaxies in the Dusty Starburst Phase
• Search for an Near-IR Counterpart to the Cas A X-ray Point Source
• Near-Infrared and X-ray Observations of the Enigmatic G70.7+1.2
• Indications of M-dwarf Deficits in the Halo and Thick Disk of the Galaxy