Skip to main content

Research Repository

Advanced Search

Homogeneous transit timing analyses of ten exoplanet systems

Baştürk, Ö; Esmer, E M; Yalçınkaya, S; Torun, Ş; Mancini, L; Helweh, F; Karamanlı, E; Southworth, J; Aliş, S; Wünsche, A; Tezcan, F; Aladağ, Y; Aksaker, N; Tunç, E; Davoudi, F; Fişek, S; Bretton, M; Evans, D F; Yeşilyaprak, C; Yılmaz, M; Tezcan, C T; Yelkenci, K

Homogeneous transit timing analyses of ten exoplanet systems Thumbnail


Ö Baştürk

E M Esmer

S Yalçınkaya

Ş Torun

L Mancini

F Helweh

E Karamanlı

S Aliş

A Wünsche

F Tezcan

Y Aladağ

N Aksaker

E Tunç

F Davoudi

S Fişek

M Bretton

D F Evans

C Yeşilyaprak

M Yılmaz

C T Tezcan

K Yelkenci


We study the transit timings of 10 exoplanets in order to investigate potential transit timing variations in them. We model their available ground-based light curves, some presented here and others taken from the literature, and homogeneously measure the mid-transit times. We statistically compare our results with published values and find that the measurement errors agree. However, in terms of recovering the possible frequencies, homogeneous sets can be found to be more useful, of which no statistically relevant example has been found for the planets in our study. We corrected the ephemeris information of all 10 planets we studied and provide these most precise light elements as references for future transit observations with space-borne and ground-based instruments. We found no evidence for secular or periodic changes in the orbital periods of the planets in our sample, including the ultra-short period WASP-103 b, whose orbit is expected to decay on an observable time-scale. Therefore, we derive the lower limits for the reduced tidal quality factors (Q(*)') for the host stars based on best-fitting quadratic functions to their timing data. We also present a global model of all available data for WASP-74 b, which has a Gaia parallax-based distance value similar to 25 per cent larger than the published value.


Baştürk, Ö., Esmer, E. M., Yalçınkaya, S., Torun, Ş., Mancini, L., Helweh, F., …Yelkenci, K. (2022). Homogeneous transit timing analyses of ten exoplanet systems. Monthly Notices of the Royal Astronomical Society, 512(2), 2062-2081.

Journal Article Type Article
Acceptance Date Feb 25, 2022
Online Publication Date Mar 7, 2022
Publication Date 2022-05
Journal Monthly Notices of the Royal Astronomical Society
Print ISSN 0035-8711
Electronic ISSN 1365-2966
Publisher Oxford University Press
Peer Reviewed Peer Reviewed
Volume 512
Issue 2
Pages 2062-2081
Keywords methods: observational, techniques: photometric, planetary systems, stars: individual: HAT-P-23, WASP-37, WASP-69, WASP-74, HAT-P-56, WASP-2, WASP-14, HAT-P-32, WASP-103, HAT-P-37
Publisher URL


You might also like

Downloadable Citations