| Issue |
A&A
Volume 415, Number 3, March I 2004
|
|
|---|---|---|
| Page(s) | 987 - 991 | |
| Section | Galactic structure, stellar clusters, and populations | |
| DOI | https://doi.org/10.1051/0004-6361:20034287 | |
| Published online | 13 February 2004 | |
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 ![$\mbox{[Fe/H]}=-1.65\pm0.1$](/articles/aa/abs/2004/09/aa0287/aa0287_tex_eq4.png)
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
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