Exploring the Luminosity Function for Prototypical Open Clusters with IRAC

Details Exploring the Luminosity Function for Prototypical Open Clusters with IRAC Exploring the Luminosity Function for Prototypical Open Clusters with IRAC

May 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006sptz.prop30800f&link_type=abstract

Spitzer Proposal ID #30800

Physics

Scientific paper

We propose to map WIYN open cluster survey (WOCS) clusters with all four IRAC bands. The WOCS sample is characterizing ``prototypical'' open clusters, which sample a range of ages and metallicities. A primary challenge to exploring such crowded , low latitude fields is the significant contamination of the clusters by field stars, which obscures the true size of the cluster and renders the color-magnitude diagram (CMD) almost uninterpretable. The combination of near-infrared (i.e., 2MASS) and Spitzer IRAC photometry allows a direct and powerful assessment of the line of sight reddening and extinction to each star in the cluster. We propose to use this dereddening technique by combining new deep NIR and IRAC photometry to provide an individual reddening and extinction (A_K) for each star. Because the stars in the cluster are at the same distance, they should suffer approximately the same degree of extinction and reddening, whereas contaminating stars at different distances will have a different A_K. We intend to use these "relative reddening parallaxes" to eliminate obvious cluster non-members and produce valuable, cleaned cluster CMDs as well as 2-D spatial distributions. These cleaned CMDs will provide the strongest observational constraints yet to the luminosity function, stellar evolution, and binary fractions for key open clusters that are commonly used as calibrators for extragalactic stellar population studies.

Affiliated with

Also associated with

No associations

Rating

Exploring the Luminosity Function for Prototypical Open Clusters with IRAC 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 Exploring the Luminosity Function for Prototypical Open Clusters with IRAC, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Exploring the Luminosity Function for Prototypical Open Clusters with IRAC will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-935739