BYU

Abstract by Ian Clark

Personal Infomation


Presenter's Name

Ian Clark

Degree Level

Undergraduate

Co-Authors

Denise Stephens
John-Michael Eberhard
Jarrod Hansen
Trevor Martin
Alex Spencer

Abstract Infomation


Department

Physics and Astronomy

Faculty Advisor

Denise Stephens

Title

An Exploration of Detecting the Periods of ZZ Ceti Stars with a 0.4 Meter Telescope

Abstract

This project aims to determine if a 0.4 meter telescope is large enough to adequately detect white dwarf pulsations.  White dwarfs are the end result of stellar evolution for most stars and many will pulsate at some point in their lifetime. These pulsations are generally low amplitude, so the telescope used must be fairly large in order to detect them. Just how large the mirror must be is a topic worthy of exploration.  Various exposure times (120 s, 60 s) and different period analysis methods (e.g. fast Fourier transform or phase dispersion minimization methods) were also tested to find which combination is most likely to detect the expected periodicity of two white dwarfs, ZZ Psc and PY Vul.  We found that all period analysis techniques were able to detect one of ZZ Psc’s periods while most could detect two or three of PY Vul’s.