The distance to IC 4499 from K-band photometry of 32 RR Lyrae stars*
Astrophysikalisches Institut Potsdam, An der Sternwarte 16, 14482 Potsdam, Germany
Corresponding author: jstorm@aip.de
Received:
8
September
2003
Accepted:
14
November
2003
Single epoch K-band photometry of 32 RR Lyrae stars in the young galactic
globular cluster IC 4499 is presented. The mean magnitudes have been
estimated using the K-band template light-curves of Jones et al. ([CITE]). We derive an independent estimate of the distance and reddening for the cluster based on the new
-
-[Fe/H] relation from Bono et al. ([CITE]) which has a
zero-point in agreement with the canonical LMC distance of 
. For an assumed metallicity of 
we find
(random and systematic errors
respectively) and 
in good agreement
with the findings of Walker & Nemec ([CITE]) based on optical data.
The distance estimate is very robust to uncertainties in the reddening
estimate but naturally depends directly on the adopted zero-point of
the --[Fe/H] relation.
Key words: stars: distances / stars: fundamental parameters / stars: horizontal-branch / stars: variables: RR Lyrae
© ESO, 2004