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Shallow transit follow-up from Next-Generation Transit Survey: Simultaneous observations of HD 106315 with 11 identical telescopes

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journal contribution
posted on 23.03.2021, 16:03 by Alexis MS Smith, Philipp Eigmueller, Ramanathan Gurumoorthy, Szilard 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, Stephane Udry, Richard G West, Peter J Wheatley
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.

Funding

UK Science and Technology Facilities Council. Grant Number: ST/M001962/1

History

Citation

Volume 341, Issue 3, March 2020, pp.273-282

Author affiliation

School of Physics and Astronomy

Version

VoR (Version of Record)

Published in

Astronomische Nachrichten

Volume

341

Issue

3

Pagination

273 - 282

Publisher

Wiley

issn

0004-6337

eissn

1521-3994

Acceptance date

25/02/2020

Copyright date

2020

Available date

23/03/2021

Language

English