| Issue |
A&A
Volume 399, Number 2, February IV 2003
|
|
|---|---|---|
| Page(s) | 441 - 448 | |
| Section | Cosmology (including clusters of galaxies) | |
| DOI | https://doi.org/10.1051/0004-6361:20021800 | |
| Published online | 07 February 2003 | |
H0 measurement from VLT deep I–band surface brightness fluctuations in NGC 564 and NGC 7619 *
1
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, simona.mei@ias.fr
Received:
28
June
2002
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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