Looking for timing variations in the transits of 16 exoplanets

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Yalçlnkaya S., ESMER E. M., BAŞTÜRK Ö., Muhaymin A., Kutluay A., Silistre D., ...Daha Fazla

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, cilt.530, sa.3, ss.2475-2495, 2024 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 530 Sayı: 3
  • Basım Tarihi: 2024
  • Doi Numarası: 10.1093/mnras/stae854
  • Dergi Adı: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Applied Science & Technology Source, Communication Abstracts, Compendex, INSPEC, Metadex, zbMATH, DIALNET, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.2475-2495
  • Anahtar Kelimeler: methods: observational, planetary systems, stars: individual: GJ 1214, HAT-P-1, HAT-P-10, HAT-P-13, HAT-P-16, HAT-P-22, HAT-P-30, HAT-P-53, KELT-3, QATAR-2, WASP-8, WASP-44, WASP-50, WASP-77A, WASP-93, and XO-2, techniques: photometric
  • Ankara Üniversitesi Adresli: Evet

Özet

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.