Astronomy and Astrophysics – Astrophysics
Scientific paper
2001-01-16
Astrophys.J.Suppl. 134 (2001) 53-76
Astronomy and Astrophysics
Astrophysics
14 pages, 22 figures, accepted for publication in ApJS, for eps versions of figures, see http://www.ucolick.org/~flint/GLF/Pap
Scientific paper
10.1086/320365
We present a program to study the galaxy luminosity function (GLF) of the Leo I and Coma I Groups at ~10 Mpc. We have surveyed over seven square degrees in Leo I and ~11 square degrees in Coma I. In this paper, we detail the method we have developed and implemented for identifying on morphological grounds low-surface-brightness, M_R < -10 dwarf galaxies at a distance of 10 Mpc. We also describe extensive Montecarlo simulations of artificial galaxies which we use to tune our detection algorithms and evaluate our detection efficiency and parameter recovery as a function of mu_R(0) and R_T. We find for a sub-set of our Leo I data that at the 90% completeness level we can detect dwarfs comparable to Antlia and Sculptor. Finally, we describe preliminary follow-up observations which confirm we are detecting dwarf spheroidals in Leo I at 10 Mpc.
Bolte Michael
Flint Kathleen
Mendes de Oliveira Claudia
Metevier Anne J.
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