Computer Science
Scientific paper
Aug 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005noao.prop...68w&link_type=abstract
NOAO Proposal ID #2005B-0068
Computer Science
Scientific paper
We will observe six LMC clusters with a range of ages from 25Myr to 2 Gyr to extend and check our calibration of the surface brightness fluctuation method for intermediate-age and young populations. We will complete the visual bands HST datasets by adding accurate photometry for the brightest cluster stars, and measure the CMDs in the infrared J and K bands, so we can derive the SBR parameters in these bands. These observations will determine whether the systematic discrepancy in the surface brightness calibration we see in our earlier work is a problem of the models, or with incompleteness of the observations, or both, by much reducing the error bars on the measured fluctuation brightness and colors. Only when this calibration and comparison work has been completed will we be able to proceed to confidently applying the SBF method to measuring stellar population parameters in distant galaxies.
Brocato Enzo
Cantiello Michele
Raimondo Gabriella
Walker Alistair
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