Volume 399, Number 2, February IV 2003
|Page(s)||441 - 448|
|Section||Cosmology (including clusters of galaxies)|
|Published online||07 February 2003|
H0 measurement from VLT deep I–band surface brightness fluctuations in NGC 564 and NGC 7619 *
Institut d'Astrophysique Spatiale, Université Paris-Sud, Bât. 121, 91405 Orsay, France
2 Istituto di Fisica Cosmica G. Occhialini, Via Bassini 15, 20133 Milano, Italy
3 European Southern Observatory, Karl-Schwarzschild-Strasse 2, 85748 Garching, Germany
Corresponding author: S. Mei, firstname.lastname@example.org
Accepted: 22 November 2002
We have measured the Hubble constant H0 in NGC 564 at km s-1 and in NGC 7619 at km s-1 with deep I–band Surface Brightness Fluctuation distance measurements at the ESO Very Large Telescope (VLT). We obtain km s-1/Mpc for NGC 564 and for NGC 7619. The actual SBF sample used for the measurement of H0 in the Hubble Space Telescope Key Project on the Extragalactic Distance Scale (Freedman et al. 2001) amounts to six galaxies. When we combine the measurements from this work with our previous VLT I–band SBF distance measurement in IC 4296 (Mei et al. 2000), we obtain: H0 = 68 ± 5 ± 6 km s-1/Mpc. When we add the Freedman et al. (2001) SBF sample, we obtain km s-1/Mpc.
Key words: galaxies: distances and redshifts / cosmology: cosmological parameters
© ESO, 2003
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