SIMBAD references

2008AJ....135.1361D - Astron. J., 135, 1361-1383 (2008/April-0)

Numerical color-magnitude diagram analysis of Sloan Digital Sky Survey data and application to the new Milky way satellites.

DE JONG J.T.A., RIX H.-W., MARTIN N.F., ZUCKER D.B., DOLPHIN A.E., BELL E.F., BELOKUROV V. and EVANS N.W.

Abstract (from CDS):

We have tested the application to Sloan Digital Sky Survey (SDSS) data of the software package MATCH, which fits color-magnitude diagrams (CMDs) to estimate stellar population parameters and distances. These tests on a set of six globular clusters show that these techniques recover their known properties. New ways of using the CMD-fitting software enable us to deal with an extended distribution of stars along the line-of-sight, to constrain the overall properties of sparsely populated objects, and to detect the presence of stellar overdensities in wide-area surveys. We then also apply MATCH to CMDs for 12 recently discovered Milky Way satellites to derive in a uniform fashion their distances, ages, and metallicities. While the majority of them appear consistent with a single stellar population, CVn I, UMa II, and Leo T exhibit (from SDSS data alone) a more complex history with multiple epochs of star formation.

Abstract Copyright:

Journal keyword(s): galaxies: dwarf - galaxies: stellar content - methods: numerical - methods: statistical - surveys

Simbad objects: 22

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