Photometric Techniques Using Small College Research Instruments for Study of the Extrasolar Planetary Transits of HD 209458

Hudgins, David W. and Filipovic, Miroslav D. (2002) Photometric Techniques Using Small College Research Instruments for Study of the Extrasolar Planetary Transits of HD 209458. Publications of the Astronomical Society of Australia, 19. pp. 443-447. ISSN 1323-3580, 1448-6083

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Abstract

We present the results of a program to develop techniques that enable high-resolution photometric measurements using modest research instruments available to small colleges, and then demonstrate those techniques in a pilot photometric project. Using a 25 cm Schmidt–Cassegrain telescope and SBIG ST7E CCD camera, we develop techniques that enabled milli-magnitude photometric resolution. The pilot project studied five transits of the recently discovered gas giant planet orbiting HD 209458.We measured a flux drop of 1.46±0.17% during the transit which corresponds to a planetary diameter of 1.39±0.14 RJup, a transit period of 2h 48min ±21min, and planet orbital inclination of 87.6±1.3◦.We determined the orbital period as 3.5234±0.0026 days. These results agree well with other studies which used professional grade research instruments. We suggest a number of other challenging photometric research areas suitable for graduate and undergraduate investigation using equipment common to many small colleges.

Item Type: Article
Subjects: RTSRE Related Research
Depositing User: Dr Michael Fitzgerald
Date Deposited: 03 Oct 2017 20:21
Last Modified: 03 Oct 2017 20:31
URI: http://istardb.org/id/eprint/1209

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