Currently there are two main techniques for independently determining the ages of stellar populations: main-sequence evolution theory (via cluster isochrones) and white dwarf cooling theory. Open clusters provide the ideal environment for the calibration of these two clocks. Because current techniques to derive cluster ages from white dwarfs are observationally challenging, we discuss the feasibility of determining white dwarf ages from the brighter white dwarfs alone. This would eliminate the requirement of observing the coolest (i.e., faintest) white dwarfs. We discuss our method for testing this new idea, as well as the required photometric precision and prior constraints on metallicity, distance, and reddening. We employ a new Bayesian statistical technique to obtain and interpret results.
The Astrophysical Journal
Institute of Physics Publishing, Inc.
Grant or Award Name
NASA grant NAG5- 13070 and NSF grant AST 03-07315
Scholarly Commons Citation
Jeffery, E. J., von Hippel, T., & al., e. (2007). New Techniques to Determine Ages of Open Clusters Using White Dwarfs. The Astrophysical Journal, 658(1). Retrieved from https://commons.erau.edu/publication/255