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19 January 2025

» arxiv » astro-ph/0701665

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The Effect Of Alpha-Element Enhancement On Surface Brightness Fluctuation Magnitudes And Broad-Band Colors
Hyun-chul Lee ; Guy Worthey ; John P. Blakeslee ;
Date:	23 Jan 2007
Abstract:	We present the effects due to alpha-element enhancement on surface brightness fluctuation magnitudes and broad-band colors in order to investigate the calibration zero-point. We study these effects at ages covering 0.1 to 13 Gyr and metallicities of Z=0.0003 to 0.04 using the Teramo group’s isochrones, BaSTI. Our preliminary results indicate that alpha-enhanced models are needed to match massive red galaxies while solar-scaled models are fine for dwarf blue galaxies to reproduce their independently estimated ages and metallicities.
Source:	arXiv, astro-ph/0701665
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