Artículo de revista
Shallow transit follow-up from next-generation transit survey: simultaneous observations of HD 106315 with 11 identical telescopes
Fecha
2020Registro en:
Astron. Nachr. / AN. 2020;341:273–282.
10.1002/asna.202013768
Autor
Smith, Alexis
Eigmüller, Philipp
Gurumoorthy, Ramanathan
Csizmadia, Szilárd
Bayliss, Daniel
Burleigh, Matthew R.
Cabrera, Juan
Casewell, Sarah
Erikson, Anders
Goad, Michael
Grange, Andrew
Jenkins, James Stewart
Pollacco, Don
Rauer, Heike
Raynard, Liam
Udry, Stéphane
West, Richard
Wheatley, Peter
Institución
Resumen
The Next Generation Transit Survey (NGTS) is a photometric survey for transiting exoplanets, consisting of 12 identical 0.2-m telescopes. We report a measurement of the transit of HD 106315 c using a novel observing mode in which multiple NGTS telescopes observed the same target, with the aim of increasing the signal-to-noise ratio. Combining the data allows the robust detection of the transit, which has a depth less than 0.1%, rivaling the performance of much larger telescopes. We demonstrate the capability of NGTS to contribute to the follow-up of K2 and Transiting Exoplanet Survey Satellite 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.