Faint star counts in the near-infrared

Details Faint star counts in the near-infrared Faint star counts in the near-infrared

2002-04-17

arxiv.org/abs/astro-ph/0204284v1

Astronomy and Astrophysics

Astrophysics

14 pages and 4 diagrams; to appear in PASP

Scientific paper

10.1086/341704

We discuss near-infrared star counts at the Galactic pole with a view to guiding the NGST and ground-based NIR cameras. Star counts from deep K-band images from the CFHT are presented, and compared with results from the 2MASS survey and some Galaxy models. With appropriate corrections for detector artifacts and galaxies, the data agree with the models down to K~18, but indicate a larger population of fainter red stars. There is also a significant population of compact galaxies that extend to the observational faint limit of K=20.5. Recent Galaxy models agree well down to K$\sim$19, but diverge at fainter magnitudes.

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