Bibcode
Raetz, St.; Maciejewski, G.; Seeliger, M.; Marka, C.; Fernández, M.; Güver, T.; Göğüş, E.; Nowak, G.; Vaňko, M.; Berndt, A.; Eisenbeiss, T.; Mugrauer, M.; Trepl, L.; Gelszinnis, J.
Referencia bibliográfica
Monthly Notices of the Royal Astronomical Society, Volume 451, Issue 4, p.4139-4149
Advertised on:
8
2015
Número de citas
18
Número de citas referidas
16
Descripción
Although WASP-14 b is one of the most massive and densest exoplanets on
a tight and eccentric orbit, it has never been a target of photometric
follow-up monitoring or dedicated observing campaigns. We report on new
photometric transit observations of WASP-14 b obtained within the
framework of Transit Timing Variations @ Young Exoplanet Transit
Initiative (TTV@YETI). We collected 19 light curves of 13 individual
transit events using six telescopes located in five observatories
distributed in Europe and Asia. From light-curve modelling, we
determined the planetary, stellar, and geometrical properties of the
system and found them in agreement with the values from the discovery
paper. A test of the robustness of the transit times revealed that in
case of a non-reproducible transit shape the uncertainties may be
underestimated even with a wavelet-based error estimation methods. For
the timing analysis, we included two publicly available transit times
from 2007 and 2009. The long observation period of seven years
(2007-2013) allowed us to refine the transit ephemeris. We derived an
orbital period 1.2 s longer and 10 times more precise than the one given
in the discovery paper. We found no significant periodic signal in the
timing-residuals and, hence, no evidence for TTV in the system.
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