Colour-Magnitude Diagrams of candidate age-gap filling LMC clusters

Details Colour-Magnitude Diagrams of candidate age-gap filling LMC clusters Colour-Magnitude Diagrams of candidate age-gap filling LMC clusters

2009-07-16

arxiv.org/abs/0907.2890v2

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

4 pages, 5 figures, compact form of the poster published online in the proceedings of IAUS256: The Magellanic System: Stars, G

Scientific paper

The LMC has a rich star cluster system spanning a wide range of ages and masses. One striking feature of the LMC cluster system is the existence of an age gap between 3-10 Gyrs. Four LMC clusters whose integrated colours are consistent with those of intermediate age simple stellar populations have been imaged with the Optical Imager (SOI) at the Southern Telescope for Astrophysical Research (SOAR). Their colour-magnitude diagrams (CMDs) reach V ~ 24. Isochrone fits, based on Padova evolutionary models, were carried out to these CMDs, after subtraction of field contamination. The preliminary results are as follows: KMK88-38 has an age of ~ 1.3 Gyr, assuming typical LMC metallicity and distance modulus, and a very low redenning. For OGLE-LMC0531, the best eye fits to isochrones yield an age ~ 1.6 Gyr and E(B-V)=0.03. BSDL917 is younger, ~ 150 yrs, and subjected to larger extinction (E(B-V)=0.08). The remaining cluster is currently under analysis. Therefore, we conclude that these clusers are unlikely to fill in the LMC cluster age gap, even when fitting uncertainties in the parameters are considered.

Affiliated with

Also associated with

No associations

Rating

Colour-Magnitude Diagrams of candidate age-gap filling LMC clusters 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 Colour-Magnitude Diagrams of candidate age-gap filling LMC clusters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Colour-Magnitude Diagrams of candidate age-gap filling LMC clusters will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-622601