Planetary transit observations at the University Observatory Jena: TrES-2
| Autor: | Raetz, St., Mugrauer, M., Schmidt, T. O. B., Roell, T., Eisenbeiss, T., Hohle, M. M., Koeltzsch, A., Vanko, M., Ginski, Ch., Marka, C., Moualla, M., Tetzlaff, N., Seifahrt, A., Broeg, Ch., Koppenhoefer, J., Raetz, M., Neuhäuser, R. |
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| Rok vydání: | 2009 |
| Předmět: | |
| Zdroj: | Astron.Nachr.330:459-468,2009 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1002/asna.200811202 |
| Popis: | We report on observations of several transit events of the transiting planet TrES-2 obtained with the Cassegrain-Teleskop-Kamera at the University Observatory Jena. Between March 2007 and November 2008 ten different transits and almost a complete orbital period were observed. Overall, in 40 nights of observation 4291 exposures (in total 71.52 h of observation) of the TrES-2 parent star were taken. With the transit timings for TrES-2 from the 34 events published by the TrES-network, the Transit Light Curve project and the Exoplanet Transit Database plus our own ten transits, we find that the orbital period is P=(2.470614 +/- 0.000001) d, a slight change by ~0.6 s compared to the previously published period. We present new ephemeris for this transiting planet. Furthermore, we found a second dip after the transit which could either be due to a blended variable star or occultation of a second star or even an additional object in the system. Our observations will be useful for future investigations of timing variations caused by additional perturbing planets and/or stellar spots and/or moons. Comment: 10 pages, 13 figures, 5 tables, acceptes for publication in AN |
| Databáze: | arXiv |
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