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Probing the stellar initial-final mass relation

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thesis
posted on 28.03.2022, 17:36 by Richard Bruce Baxter
I have tested our current understanding of the form of the stellar initial-final mass relation (IFMR) by performing a preliminary study of twelve (12) wide double-degenerate binaries. I identified these systems by applying colour and magnitude selection criteria, in software, to identify blue object close pairs in the imaging data of the Sloan Digital Sky Survey (SDSS). A selection of these were then targeted for spectroscopic follow-up while performing astrometric analysis to determine if the components in each had significant, common proper motions. Subsequently, I used existing grids of white dwarf synthetic spectra and evolutionary models to interpret the spectroscopic data.The white dwarf parameters of mass, Mf , and cooling time, tcool, were then used to probe the form of the IFMR. Using the white dwarfs in my sample whose derived parameters confirmed they were coeval and physically associated, I have also constructed a preliminary mass distribution for the components of these binary systems.

History

Table of Contents

1. Introduction -- 2. Data -- 3. Results -- 4. Moving forward -- A. Appendix.

Notes

Includes bibliographical references Thesis submitted for the degree of Master of Philosophy, Macquarie University, Department of Physics and Astronomy, 2011.

Awarding Institution

Macquarie University

Degree Type

Thesis MPhil

Degree

MPhil, Macquarie University, Faculty of Sciernce and Engineering, Department of Physics and Astronomy

Department, Centre or School

Department of Physics and Astronomy

Year of Award

2011

Principal Supervisor

Paul Dobbie

Additional Supervisor 1

Quentin Parker

Rights

Copyright Richard Bruce Baxter 2011. Copyright disclaimer: http://mq.edu.au/library/copyright

Language

English

Extent

1 online resource (xx, 220 pages) illustrations

Former Identifiers

mq:53884 http://hdl.handle.net/1959.14/1138378