학술논문
Original Research By Young Twinkle Students (ORBYTS): Ephemeris Refinement of Transiting Exoplanets
Document Type
Working Paper
Author
Edwards, Billy; Changeat, Quentin; Yip, Kai Hou; Tsiaras, Angelos; Taylor, Jake; Akhtar, Bilal; AlDaghir, Josef; Bhattarai, Pranup; Bhudia, Tushar; Chapagai, Aashish; Huang, Michael; Kabir, Danyaal; Khag, Vieran; Khaliq, Summyyah; Khatri, Kush; Kneth, Jaidev; Kothari, Manisha; Najmudin, Ibrahim; Panchalingam, Lobanaa; Patel, Manthan; Premachandran, Luxshan; Qayyum, Adam; Rana, Prasen; Shaikh, Zain; Syed, Sheryar; Theti, Harnam; Zaidani, Mahmoud; Saraf, Manasvee; de Mijolla, Damien; Caines, Hamish; Kokori, Anatasia; Rocchetto, Marco; Mallonn, Matthias; Bachschmidt, Matthieu; Bosch, Josep M.; Bretton, Marc; Chatelain, Philippe; Deldem, Marc; Di Sisto, Romina; Evans, Phil; Fernandez-Lajus, Eduardo; Guerra, Pere; Horta, Ferran Grau; Kang, Wonseok; Kim, Taewoo; Leroy, Arnaud; Lomoz, Frantivsek; de Haro, Juan Lozano; Hentunen, Veli-Pekka; Jongen, Yves; Molina, David; Montaigut, Romain; Naves, Ramon; Raetz, Manfred; Sauer, Thomas; Watkins, Americo; Wunsche, Anael; Zibar, Martin; Dunn, William; Tessenyi, Marcell; Savini, Giorgio; Tinetti, Giovanna; Tennyson, Jonathan
Source
Subject
Language
Abstract
We report follow-up observations of transiting exoplanets that have either large uncertainties (>10 minutes) in their transit times or have not been observed for over three years. A fully robotic ground-based telescope network, observations from citizen astronomers and data from TESS have been used to study eight planets, refining their ephemeris and orbital data. Such follow-up observations are key for ensuring accurate transit times for upcoming ground and space-based telescopes which may seek to characterise the atmospheres of these planets. We find deviations from the expected transit time for all planets, with transits occurring outside the 1 sigma uncertainties for seven planets. Using the newly acquired observations, we subsequently refine their periods and reduce the current predicted ephemeris uncertainties to 0.28 - 4.01 minutes. A significant portion of this work has been completed by students at two high schools in London as part of the Original Research By Young Twinkle Students (ORBYTS) programme.
Comment: Accepted for publication in MNRAS
Comment: Accepted for publication in MNRAS