Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-04-20
Astronomy and Astrophysics
Astrophysics
7 pages, 7 figures, accepted for publication in MNRAS
Scientific paper
10.1111/j.1365-2966.2004.08249.x
We present new empirical calibrations of the Red Giant Branch (RGB) Bump and Tip based on a homogeneous near-Infrared database of 24 Galactic Globular Clusters. The luminosities of the RGB Bump and Tip in the J, H and K bands and their dependence on the cluster metallicity have been studied, yielding empirical relationships. By using recent transformations between the observational and theoretical planes, we also derived similar calibrations in terms of bolometric luminosity. Direct comparison between updated theoretical models and observations show an excellent agreement. The empirical calibration of the RGB Tip luminosity in the near-Infrared passbands presented here is a fundamental tool to derive distances to far galaxies beyond the Local Group, in view of using the new ground-based adaptive optics facilities and, in the next future, the James Webb Space Telescope.
Ferraro Francesco R.
Origlia Livia
Valenti Elena
No associations
LandOfFree
The Red Giant Branch in Near-Infrared Colour-Magnitude Diagrams. II: The luminosity of the Bump and the Tip does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The Red Giant Branch in Near-Infrared Colour-Magnitude Diagrams. II: The luminosity of the Bump and the Tip, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Red Giant Branch in Near-Infrared Colour-Magnitude Diagrams. II: The luminosity of the Bump and the Tip will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-17818