Near-Infrared photometry of the Galactic Globular Cluster NGC 6441
- Dall'Ora, M.
- Storm, J.
- Bono, G.
- Stetson, P. B.
- Andreuzzi, G.
- Buonanno, R.
- Caputo, F.
- Marconi, M.
- Monelli, M.
- Piersimoni, A.
- Ripepi, V.
- Vanzi, L.
- Vivas, A. K.
Publication date
December 2006
DOI Publisher
Union Astronomique Internationale ISSN
1743-9213Abstract
We present new near-infrared Ks photometry of the interesting Galactic globular cluster NGC 6441. The optical-NIR color-magnitude diagram shows evolutionary features that seem to agree with a canonical evolutionary framework. The K-band Period-LuminosityMetallicity relation of RR Lyrae stars gives a distance estimate of 15.51 \ub1 0.07 that is slightly larger previous estimates.Peer reviewed: YesNRC publication: Ye
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