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hat19 [2012/03/29 13:59] Martin Seeliger |
hat19 [2017/02/21 10:23] (current) |
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| + | ===== HAT-P-19 b ===== | ||
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| + | === AIMS === | ||
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| + | The K1 dwarf HAT-P-19 was found to show transits by [[http://adsabs.harvard.edu/abs/2011ApJ...726...52H|Hartman et al. (2011)]]. Together with RV analysis they could show that it is surrounded by a 0.292 jupiter mass planet with a radius of 1.132 jupiter radii. The RV residuals from a Keplerian fit were found to show a linear trend which indicates the existence of a third body in the system. Even though the eccentricity is quite small (e=0.067+/-0.042) compared to other TTV-targets, analysing transit timing variations can be used to prove or neglect the third-body-hypothesis from the RV signal. The predicted period of this body is 244 days, making it necessary to have long term observations.\\ | ||
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| + | {{ :hat_p_19.gif |}} \\ | ||
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| + | Figure caption: The original data published by Hartman et al. (2011) showing the residuals from the fit that indicate a third body in the system (their fig. 4). | ||
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| + | === RESULTS === | ||
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| + | Data points may only lead to a redetermination of period, but no TTV measurement possible yet. | ||
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| + | === STATUS === | ||
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| + | The campaign, starting in 2011, is continuing in 2012. If you can contribute a light curve, please let me know. | ||
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| + | === LIGHT CURVES === | ||
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| + | **Reliable** | ||
| + | | **No.** | **Date** | **Epoch** | **Instrument** | **Comment** | | ||
| + | | 1 | 2011 Nov 23 | 199 | Jena 0.6m | | | ||
| + | | 2 | 2011 Dec 09 | 203 | Jena 0.6m | | | ||
| + | | 3 | 2011 Dec 17 | 205 | Calar Alto 1.2m | | | ||
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| + | **Others** | ||
| + | | **No.** | **Date** | **Epoch** | **Instrument** | **Comment** | | ||
| + | | 1 | 2011 Nov 23 | 199 | Trebur 1.2m | jumps in data points, no good fits possible| | ||
| + | | 2 | 2011 Dec 05 | 202 | Jena 0.6m | only first half of transit observed | | ||
| + | | 3 | 2011 Dec 09 | 203 | Trebur 1.2m | only first half of transit observed| | ||
| + | === CONTACT === | ||
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| + | PI: Martin Seeliger <martin.seeliger@uni-jena.de> | ||
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