Halo Mass Function: Low-mass Stars in Deep Fields

Details Halo Mass Function: Low-mass Stars in Deep Fields Halo Mass Function: Low-mass Stars in Deep Fields

2004-11-10

arxiv.org/abs/astro-ph/0411276v1

Astronomy and Astrophysics

Astrophysics

6 pages, Latex, 4 figures, to be published in ``IMF@50: A Fest-Colloquium in honor of Edwin E. Salpeter,'' held at Abbazia di

Scientific paper

Deep fields are unique probes of the Galactic halo. With a limiting magnitude of, e.g., I = 30 mag, all stars down to the hydrogen-burning limit are detected out to distances of 10 kpc, while stars with 0.5 solar masses could be traced out to distances of 400 kpc. Thus deep fields provide an opportunity to study both the structure of the Galactic halo and the mass function of population (Pop) II and Pop III stars. I summarize previous work on the Galactic stellar halo utilizing the Hubble Deep Fields North and South, supplemented by a preliminary analysis of the recently released Hubble Ultra-Deep Field.

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