The age and composition of the LMC red globular cluster NGC 2121.
Abstract
A color-magnitude diagram for the Large Magellanic Cloud red globular cluster NGC 2121 to V = 21 shows a conspicuous main sequence and a well-populated giant region. The main sequence turnoff morphology indicates an age of only ≡0.4 billion years, and the faintest giants, when fitted to a set of evolutionary models calculated for this purpose, give a similar result. A value of [Fe/H] of -1.3±0.4 is obtained from the colors and magnitudes on the giant branch.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- December 1983
- DOI:
- Bibcode:
- 1983ApJ...275...15F
- Keywords:
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- Abundance;
- Globular Clusters;
- Magellanic Clouds;
- Stellar Color;
- Stellar Evolution;
- Stellar Magnitude;
- Astronomical Maps;
- Cepheid Variables;
- Color-Magnitude Diagram;
- Giant Stars;
- Interstellar Extinction;
- Iron;
- M Stars;
- Main Sequence Stars;
- Ubv Spectra;
- Astrophysics