The Next Generation Transit Survey (NGTS)

Wheatley, P. J.; Pollacco, D.; Queloz, D.; Rauer, H.; Watson, C. A.; West, R. G.; Chazelas, Bruno; Louden, Tom; Walker, Simón R.; Bannister, Nigel; Bento, J.; Burleigh, M. R.; Cabrera, J.; Eigmüller, Philipp; Erikson, A.; Genolet, L.; Goad, M. R.; Grange, Andrew; Jordán, Andrés; Lawrie, Katherine; McCormac, J.; Neveu, Marion

doi:10.1051/epjconf/20134713002

Cited by 101 publications

(66 citation statements)

References 94 publications

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“…The decreasing probabilities with orbital distance also suggest that high-precision, shorter duration surveys such as TESS (Ricker et al 2015) or NGTS (Wheatley et al 2013) could detect monotransits in substantial numbers. The 28 d survey duration for the majority of the Transiting Exoplanet Survey Satellite (TESS) field, for example, would likely find monotransiting giant planets around >0.04 per cent of FGK stars, potentially improving giant planet yield by as much as 50 per cent.…”

Section: Single Transit Event Occurrence Ratementioning

confidence: 99%

“…Long-period (and low impact parameter) planets may have a better probability of reobservation due to their longer transit duration. Precise transit survey telescopes such as MEarth (Irwin et al 2008) or NGTS (Wheatley et al 2013), in combination with amateur observer programmes, could be used most effectively to this goal.…”

Section: Potential For Follow-up Observationsmentioning

confidence: 99%

“…This method could also be applied to more traditional single-field photometric surveys such as NGTS (Wheatley et al 2013).…”

Section: Application To Future Missionsmentioning

confidence: 99%

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Single transit candidates from K2: detection and period estimation

Osborn

Armstrong

Brown

et al. 2016

Mon. Not. R. Astron. Soc.

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Photometric surveys such as Kepler have the precision to identify exoplanet and eclipsing binary candidates from only a single transit. K2, with its 75 d campaign duration, is ideally suited to detect significant numbers of single-eclipsing objects. Here we develop a Bayesian transit-fitting tool ('Namaste: An Mcmc Analysis of Single Transit Exoplanets') to extract orbital information from single transit events. We achieve favourable results testing this technique on known Kepler planets, and apply the technique to seven candidates identified from a targeted search of K2 campaigns 1, 2 and 3. We find EPIC203311200 to host an excellent exoplanet candidate with a period, assuming zero eccentricity, of 540 +410 −230 d and a radius of 0.51 ± 0.05R Jup . We also find six further transit candidates for which more follow-up is required to determine a planetary origin. Such a technique could be used in the future with TESS, PLATO and ground-based photometric surveys such as NGTS, potentially allowing the detection of planets in reach of confirmation by Gaia.

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Section: Single Transit Event Occurrence Ratementioning

confidence: 99%

Section: Potential For Follow-up Observationsmentioning

confidence: 99%

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Single transit candidates from K2: detection and period estimation

Osborn

Armstrong

Brown

et al. 2016

Mon. Not. R. Astron. Soc.

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“…The Next Generation Transit Survey (NGTS, Chazelas et al 2012, Wheatley et al 2013) is a new ground-based transit survey that is being constructed during 2014 at the ESO Paranal Observatory in Chile. The primary objectives are: 1) to identify the first statistically-significant sample of transiting Neptunes and Super-Earths orbiting stars that are sufficiently bright for radial velocity confirmation and mass determination; 2) to identify individual transiting Neptunes and Super-Earths with host stars that are sufficiently bright for secondary eclipse and transmission spectroscopy follow up with JWST, E-ELT and EChO.…”

Section: Next Generation Transit Surveymentioning

confidence: 99%

The contribution of the major planet search surveys to EChO target selection

et al. 2014

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The EChO core science will be based on a three tier survey, each with increasing sensitivity, in order to study the population of exo-planets from super-Earths to Jupiter-like planets, in the very hot to temperate zones (temperatures of 300 K -3000 K) of F to M-type host stars. To achieve a meaningful outcome an accurate selection of the target sample is needed. In this paper we analyse the targets, suitable for EChO observations, expected to result from a sample of present and forthcoming detection surveys. Exoplanets currently known are already sufficient to provide a large and diverse sample. However we expect the results from these surveys to increase the sample of smaller planets that will allow us to optimize the EChO sample selection.

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“…A southern analog to Robo-AO mounted on the Southern Astrophysical Research Telescope at CTIO and capable of twice HST resolution imaging, is also in development . With unmatched efficiency, Robo-AO and its lineage of instruments are uniquely able to perform high-acuity imaging of the hundreds of K2 ) planetary candidates, ground-based transit surveys such as MEarth (Nutzman & Charbonneau 2008), KELT (Pepper et al 2007, HATNet (Bakos et al 2004), SuperWASP (Pollacco et al 2006), NGTS (Wheatley et al 2013), XO (McCullough et al 2005), and the Evryscope (Law et al 2015), as well as the thousands of expected exoplanet hosts discovered by the forthcoming NASA Transiting Exoplanet Survey Satellite (Ricker et al 2015) and ESA PLAnetary Transits and Oscillations of stars 2.0 (Rauer et al 2014) …”

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confidence: 99%

Robo-AO Kepler Survey. IV. The Effect of Nearby Stars on 3857 Planetary Candidate Systems

Ziegler

Law

Baranec

et al. 2018

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We present the overall statistical results from the Robo-AO Kepler planetary candidate survey, comprising of 3857 high-angular resolution observations of planetary candidate systems with Robo-AO, an automated laser adaptive optics system. These observations reveal previously unknown nearby stars blended with the planetary candidate host stars that alter the derived planetary radii or may be the source of an astrophysical false positive transit signal. In the first three papers in the survey, we detected 440 nearby stars around 3313 planetary candidate host stars. In this paper, we present observations of 532 planetary candidate host stars, detecting 94 companions around 88 stars; 84 of these companions have not previously been observed in high resolution. We also report 50 more-widely separated companions near 715 targets previously observed by Robo-AO. We derive corrected planetary radius estimates for the 814 planetary candidates in systems with a detected nearby star. If planetary candidates are equally likely to orbit the primary or secondary star, the radius estimates for planetary candidates in systems with likely bound nearby stars increase by a factor of 1.54, on average. We find that 35 previously believed rocky planet candidates are likely not rocky due to the presence of nearby stars. From the combined data sets from the complete Robo-AO KOI survey, we find that 14.5±0.5% of planetary candidate hosts have a nearby star with 4″, while 1.2% have two nearby stars, and 0.08% have three. We find that 16% of Earth-sized, 13% of Neptune-sized, 14% of Saturn-sized, and 19% of Jupiter-sized planet candidates have detected nearby stars.

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The Next Generation Transit Survey (NGTS)

Cited by 101 publications

References 94 publications

Single transit candidates from K2: detection and period estimation

Single transit candidates from K2: detection and period estimation

The contribution of the major planet search surveys to EChO target selection

Robo-AO Kepler Survey. IV. The Effect of Nearby Stars on 3857 Planetary Candidate Systems

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