Photometry and transit-timing analysis for eleven transiting exoplanets

This thesis presents time-series photometry of transits of 11 different extrasolar planets. Observations were conducted with the Fred L. Whipple Observatory 1.2m telescope and the Wise Observatory im telescope, in standard optical bandpasses. The number of transits observed for each planet ranges between one and 20 transits, and differential aperture photometry is performed for each transit observation. For the system TrES-2, this thesis examines 14 different different transit observations. Because of this large quantity of data, the parameters Rp/R., b, a/R., and i are also fitted for with precision using the Markov Chain Monte Carlo technique, and the resultant parameter values are presented. Transit-timing analysis is performed on all systems: CoRoT-2, GJ436, HAT-P-1, HD17156, HD189733, TrES-1, TrES-2, WASP-2, WASP-3, XO-1, XO-2, and XO-3. Transit timing is important both for constraining the orbital period and to search for variations in the transit-to-transit interval that could indicate the presence of an unseen companion planet. The transit center times for nearly all observations are found, and the planetary periods for all systems are calculated. In many cases these periods are determined with much greater precision than previously known. It is found that systems XO-2 and HAT-P-1 are consistent with a constant period, but our data are not conclusive with regards to the other systems.

Department dc:contributor.department

Massachusetts Institute of Technology. Dept. of Physics.

Grantor dc:publisher

Massachusetts Institute of Technology

Year dc:date.issued

2009

Author dc:creator

• De Kleer, Katherine Rebecca

Advisor dc:contributor.advisor

• Joshua N. Will.

• Physics.

Statement dc:rights

• M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission.

Licence dc:rights.uri

• http://dspace.mit.edu/handle/1721.1/7582

Language dc:language.iso

eng

Handle dc:identifier.uri

http://hdl.handle.net/1721.1/51598

OAI identifier oai:identifier

oai:dspace.mit.edu:1721.1/51598