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24 April 2024

» arxiv » 2002.5591

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Shallow transit follow-up from NGTS: simultaneous observations of HD106315 with 11 identical telescopes
Alexis M. S. Smith ; Philipp Eigmüller ; Ramanathan Gurumoorthy ; Szilárd Csizmadia ; Daniel Bayliss ; Matthew R. Burleigh ; Juan Cabrera ; Sarah L. Casewell ; Anders Erikson ; Michael R. Goad ; Andrew Grange ; James S. Jenkins ; Don Pollacco ; Heike Rauer ; Liam Raynard ; Stéphane Udry ; Richard G. West ; Peter J. Wheatley ;
Date:	13 Feb 2020
Abstract:	The Next Generation Transit Survey (NGTS) is a photometric survey for transiting exoplanets, consisting of twelve identical 0.2-m telescopes. We report a measurement of the transit of HD106315c using a novel observing mode in which multiple NGTS telescopes observed the same target with the aim of increasing the signal-to-noise. Combining the data allows the robust detection of the transit, which has a depth less than 0.1 per cent, rivalling the performance of much larger telescopes. We demonstrate the capability of NGTS to contribute to the follow-up of K2 and TESS discoveries using this observing mode. In particular, NGTS is well-suited to the measurement of shallow transits of bright targets. This is particularly important to improve orbital ephemerides of relatively long-period planets, where only a small number of transits are observed from space.
Source:	arXiv, 2002.5591
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