1–5 Jul 2019
Geological Museum
Europe/Copenhagen timezone

Population synthesis study of the Gaia binary white dwarf population within 100 pc

1 Jul 2019, 14:40
20m
Main Auditorium (Geological Museum)

Main Auditorium

Geological Museum

Øster Voldgade 5-7 DK-1350 Copenhagen

Speaker

Dr Santiago Torres (Universitat Politècnica de Catalunya (UPC), Spain)

Description

Gaia-DR2 has provided an unprecedented wealth of information about the white dwarf population of our Galaxy. In particular, our estimates show that the sample up to 100 pc from the Sun can be considered as practically complete. This fact permits to obtain accurate statistics about the percentages of the different subpopulations, such as the number of resolved/unresolved double degenerate systems, or white dwarf plus main sequence stars. With the aid of a detailed population synthesis code we are able to fit the best models parameters thus obtaining valuable information about the initial separation distribution, the binary fraction or the initial mass and ratio distribution, among others.

Primary author

Dr Santiago Torres (Universitat Politècnica de Catalunya (UPC), Spain)

Co-authors

Mr Pere Canals Canals (Universitat Politècnica de Catalunya (UPC), Spain) Alberto Rebassa Mansergas (Universitat Politècnica de Catalunya)

Presentation materials

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