4 papers
White Dwarfs and Dark Matter
Brad K. Gibson, Chris Flynn
Oppenheimer et al. (2001) have argued recently that at least 2% of the Galactic halo is comprised of white dwarfs If true, this finding has crucial implications for understanding t…
Chemical enrichment and star formation in the Milky Way disk; I. Sample description and chromospheric age-metallicity relation
H. J. Rocha-Pinto, W. J. Maciel, John Scalo +1
The age-metallicity relation of the solar neighbourhood is studied using a sample of 552 late-type dwarfs. This sample was built from the intersection of photometric catalogues wit…
Faint star counts with HST
Chris Flynn, Andrew Gould, John Bahcall
We describe a program of star counts in the range 19 < I < 26 made with the WFPC cameras aboard the Hubble Space Telescope. Red (V-I > 1.0) stars at these magnitudes are primarily…
The contribution of brown dwarfs to the local mass budget of the Galaxy
B. Fuchs, H. Jahreiss, C. Flynn
Based on the recent discoveries of free floating brown dwarfs we derive estimates of the local mass density of this population of objects. Mass density estimates from various surve…