An I-band calibration of the SBF method at blue colours

Details An I-band calibration of the SBF method at blue colours An I-band calibration of the SBF method at blue colours

2006-05-26

arxiv.org/abs/astro-ph/0605660v1

Astronomy and Astrophysics

Astrophysics

12 pages, 9 figures, accepted for publication in A&A

Scientific paper

The surface brightness fluctuation (SBF) method is a powerful tool to derive distances to galaxies for which single stars cannot be resolved. Up to now, the method has been calibrated mainly at red colours due to the intrinsic faintness of blue early-type galaxies. In this paper we address the I-band calibration of the SBF method at blue colours, the regime of dwarf elliptical galaxies (dEs). We present deep and wide-field VI photometry of the central Fornax cluster obtained at Las Campanas Observatory. With these data we perform an SBF analysis of 25 dEs in the range -16.5

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