Looking for timing variations in the transits of 16 exoplanets
Oluşturanlar
- 1. Bilkent Univ, Fac Sci, Dept Phys, TR-06800 Ankara, Turkiye
- 2. Ankara Univ, Fac Sci, Dept Astron & Space Sci, TR-06100 Ankara, Turkiye
- 3. Keele Univ, Astrophys Grp, Keele ST5 5BG, Staffs, England
- 4. Univ Liege, Astrobiol Res Unit, Allee 6 Aout 19C, B-4000 Liege, Belgium
- 5. Ataturk Univ, Fac Sci, Dept Astron & Space Sci, TR-25240 Erzurum, Turkiye
- 6. Middle East Tech Univ, Sci Fac, Phys Dept, TR-06800 Ankara, Turkiye
- 7. Univ Cukurova, Space Sci & Solar Energy Res & Applicat Ctr UZAYME, TR-01330 Adana, Turkiye
Açıklama
We update the ephemerides of 16 transiting exoplanets using our ground-based observations, new Transiting Exoplanet Survey Satellite data, and previously published observations including those of amateur astronomers. All these light curves were modelled by making use of a set of quantitative criteria with the exofast code to obtain mid-transit times. We searched for statistically significant secular and/or periodic trends in the mid-transit times. We found that the timing data are well modelled by a linear ephemeris for all systems except for XO-2 b, for which we detect an orbital decay with the rate of -12.95 +/- 1.85 ms yr(-1) that can be confirmed with future observations. We also detect a hint of potential periodic variations in the transit timing variation data of HAT-P-13 b, which also requires confirmation with further precise observations.
Dosyalar
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