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Title:
Age of Local Galactic Disk from the Wdlf for Cpmbs
Authors:
Smith, J. Allyn; Oswalt, Terry D.; Wood, Matt A.; Silvestri, Nicole M.
Affiliation:
AA(Los Alamos National Laboratory), AB(Florida Institute of Technology), AC(Florida Institute of Technology), AD(University of Washington)
Publication:
White Dwarfs: Galactic and Cosmologic Probes, 25th meeting of the IAU, Joint Discussion 5, 16-17 July 2003, Sydney, Australia
Publication Date:
00/2003
Origin:
IAU
Bibliographic Code:
2003IAUJD...5E..27S

Abstract

We present the white dwarf luminosity function (WDLF) for common proper motion systems. This WDLF was derived using the 1/Vmax method pioneered by Schmidt (1975) and detailed by Liebert Dahn and Monet (1988). New cooling models were used to determine the luminosities of the white dwarfs and the age of the local Galactic disk.

Comparison to WDLFs developed using older colling models (Wood 1995) will be examined for changes in the derived disk age. Kinematic data is available for a subset of the WDs in the sample. Separate luminosity functions will be examined for each of the statistically significant subsets.

JAS acknowledges support from NASA GSRP Fellowship NGT-51086.

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