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| Paper: |
Hot White Dwarf Luminosity Function, non-DA to DA Ratio, SDSS DR7:
Possible Improvements |
| Volume: |
469, 18th European White Dwarf Workshop (EUROWD12) |
| Page: |
77 |
| Authors: |
Krzesiński, J. |
| Abstract: |
Hot white dwarf luminosity functions (LF)
have opened new possibilities for the analysis of the properties of WDs at the beginning of
their evolution, when the hottest and the youngest objects enter WD cooling
tracks. These new LFs allow the investigation of recent star formation rate and neutrino
cooling, as well as determination of the DA to non-DA ratio. The latter can, in turn,
give a clue about WD atmosphere transformations and chemical composition changes in the
hottest WDs. However, the number of hot WDs is rather low, leading to large errors in the DA
to non-DA ratio. Is a new SDSS WD catalog a solution to the problem?
Some answers are given in this short review. |
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