9-13 July 2012
Africa/Johannesburg timezone
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To Pulse or not to Pulse? That is the question.

Presented by Mr. Christopher MIDDLETON, Dr. Chris ENGELBRECHT on 10 Jul 2012 from 12:00 to 12:20
Type: Oral Presentation
Session: Astrophysics
Track: Track D1 - Astrophysics

Abstract

We present reduction and analysis on two eclipsing Algol type binary systems from data obtained by the Kepler Satellite. KIC star A with parameters more indicative of an evolved Algol system (q = 0.36; TPrimary = 7300K, TSecondary = 4900K) shows no pulsation of the primary component of any description, whilst KIC star B, a theoretically less evolved system (q = 0.36; TPrimary = 8600K, TSecondary = 5300K) shows strong pulsation frequencies down to 8 x 10-4 magnitude. We suggest possible reasons for the lack of pulsation in KIC A and address the shortfalls of our understanding of Algol systems.

Award

Yes

Level

MSc

Supervisor

Chris Engelbrecht; engelbrecht.chris@gmail.com University of Johannesburg

Paper

Yes

Place

Location: IT 4-4


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