Lack of Transit Timing Variations of Ogle-Tr-111b: A Re-Analysis with Six New Epochs
We present six new transits of the exoplanet OGLE-TR-111b observed with the Magellan Telescopes in Chile between 2008 April and 2009 March. We combine these new transits with five previously published transit epochs for this planet between 2005 and 2006 to extend the analysis of transit timing varia...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | en_US |
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IOP Publishing
2012
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| Online Access: | http://hdl.handle.net/1721.1/73583 https://orcid.org/0000-0002-6892-6948 |
| _version_ | 1811091035097399296 |
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| author | Adams, Elisabeth Rose Seager, Sara Osip, David J. Lopez-Morales, Mercedes Elliot, James L. |
| author2 | Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences |
| author_facet | Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences Adams, Elisabeth Rose Seager, Sara Osip, David J. Lopez-Morales, Mercedes Elliot, James L. |
| author_sort | Adams, Elisabeth Rose |
| collection | MIT |
| description | We present six new transits of the exoplanet OGLE-TR-111b observed with the Magellan Telescopes in Chile between 2008 April and 2009 March. We combine these new transits with five previously published transit epochs for this planet between 2005 and 2006 to extend the analysis of transit timing variations (TTVs) reported for this system. We derive a new planetary radius value of 1.019 ± 0.026 R[subscript J] , which is intermediate to the previously reported radii of 1.067 ± 0.054 RJ and 0.922 ± 0.057 R[subscript J] . We also examine the TTV and duration change claims of Dìaz et al. Our analysis of all 11 transit epochs does not reveal any points with deviations larger than 2σ, and most points are well within 1σ. Although the transit duration nominally decreases over the four year span of the data, systematic errors in the photometry can account for this result. Therefore, there is no compelling evidence for either a timing or a duration variation in this system. Numerical integrations place an upper limit of about 1 M [subscript ⊕] on the mass of a potential second planet in a 2:1 mean-motion resonance with OGLE-TR-111b. |
| first_indexed | 2024-09-23T14:55:44Z |
| format | Article |
| id | mit-1721.1/73583 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T14:55:44Z |
| publishDate | 2012 |
| publisher | IOP Publishing |
| record_format | dspace |
| spelling | mit-1721.1/735832022-10-01T23:25:02Z Lack of Transit Timing Variations of Ogle-Tr-111b: A Re-Analysis with Six New Epochs Adams, Elisabeth Rose Seager, Sara Osip, David J. Lopez-Morales, Mercedes Elliot, James L. Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences Massachusetts Institute of Technology. Department of Physics Adams, Elisabeth Rose Seager, Sara Elliot, James L. We present six new transits of the exoplanet OGLE-TR-111b observed with the Magellan Telescopes in Chile between 2008 April and 2009 March. We combine these new transits with five previously published transit epochs for this planet between 2005 and 2006 to extend the analysis of transit timing variations (TTVs) reported for this system. We derive a new planetary radius value of 1.019 ± 0.026 R[subscript J] , which is intermediate to the previously reported radii of 1.067 ± 0.054 RJ and 0.922 ± 0.057 R[subscript J] . We also examine the TTV and duration change claims of Dìaz et al. Our analysis of all 11 transit epochs does not reveal any points with deviations larger than 2σ, and most points are well within 1σ. Although the transit duration nominally decreases over the four year span of the data, systematic errors in the photometry can account for this result. Therefore, there is no compelling evidence for either a timing or a duration variation in this system. Numerical integrations place an upper limit of about 1 M [subscript ⊕] on the mass of a potential second planet in a 2:1 mean-motion resonance with OGLE-TR-111b. United States. National Aeronautics and Space Administration (Origins Grant NNX07AN63G) 2012-10-04T12:40:07Z 2012-10-04T12:40:07Z 2010-04 2010-01 Article http://purl.org/eprint/type/JournalArticle 0004-637X 1538-4357 http://hdl.handle.net/1721.1/73583 Adams, E. R. et al. “Lack of Transit Timing Variations of Ogle-Tr-111b: A Re-Analysis with Six New Epochs.” The Astrophysical Journal 714.1 (2010): 13–24. https://orcid.org/0000-0002-6892-6948 en_US http://dx.doi.org/10.1088/0004-637x/714/1/13 Astrophysical Journal Creative Commons Attribution-Noncommercial-Share Alike 3.0 http://creativecommons.org/licenses/by-nc-sa/3.0/ application/pdf IOP Publishing arXiv |
| spellingShingle | Adams, Elisabeth Rose Seager, Sara Osip, David J. Lopez-Morales, Mercedes Elliot, James L. Lack of Transit Timing Variations of Ogle-Tr-111b: A Re-Analysis with Six New Epochs |
| title | Lack of Transit Timing Variations of Ogle-Tr-111b: A Re-Analysis with Six New Epochs |
| title_full | Lack of Transit Timing Variations of Ogle-Tr-111b: A Re-Analysis with Six New Epochs |
| title_fullStr | Lack of Transit Timing Variations of Ogle-Tr-111b: A Re-Analysis with Six New Epochs |
| title_full_unstemmed | Lack of Transit Timing Variations of Ogle-Tr-111b: A Re-Analysis with Six New Epochs |
| title_short | Lack of Transit Timing Variations of Ogle-Tr-111b: A Re-Analysis with Six New Epochs |
| title_sort | lack of transit timing variations of ogle tr 111b a re analysis with six new epochs |
| url | http://hdl.handle.net/1721.1/73583 https://orcid.org/0000-0002-6892-6948 |
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