Search Results - "Rackham, B. V"
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Helium in the eroding atmosphere of an exoplanet
Published in Nature (London) (01-05-2018)“…Helium is the second-most abundant element in the Universe after hydrogen and is one of the main constituents of gas-giant planets in our Solar System. Early…”
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Global analysis of the TRAPPIST Ultra-Cool Dwarf Transit Survey
Published in Monthly notices of the Royal Astronomical Society (01-09-2020)“…ABSTRACT We conducted a global analysis of the TRAPPIST Ultra-Cool Dwarf Transit Survey – a prototype of the SPECULOOS transit search conducted with the…”
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A study of flares in the ultra-cool regime from SPECULOOS-South
Published in Monthly notices of the Royal Astronomical Society (06-05-2022)“…ABSTRACT We present a study of photometric flares on 154 low-mass (≤0.2 M⊙) objects observed by the SPECULOOS-South Observatory from 2018 June 1 to 2020 March…”
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Precise near-infrared photometry, accounting for precipitable water vapour at SPECULOOS Southern Observatory
Published in Monthly notices of the Royal Astronomical Society (01-01-2023)“…ABSTRACT The variability induced by precipitable water vapour (PWV) can heavily affect the accuracy of time-series photometric measurements gathered from the…”
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HST/WFC3 transmission spectroscopy of the cold rocky planet TRAPPIST-1h
Published 30-03-2022“…A&A 665, A19 (2022) TRAPPIST-1 is a nearby ultra-cool dwarf star transited by seven rocky planets. We observed three transits of its outermost planet,…”
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TESS discovery of two super-Earths orbiting the M-dwarf stars TOI-6002 and TOI-5713 near the radius valley
Published 15-09-2024“…A&A 690, A263 (2024) We present the validation of two TESS super-Earth candidates transiting the mid-M dwarfs TOI-6002 and TOI-5713 every 10.90 and 10.44 days,…”
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Early Release Science of the exoplanet WASP-39b with JWST NIRSpec PRISM
Published in Nature (London) (23-02-2023)“…Transmission spectroscopy 1 – 3 of exoplanets has revealed signatures of water vapour, aerosols and alkali metals in a few dozen exoplanet atmospheres 4 , 5 …”
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TOI-4336 A b: A temperate sub-Neptune ripe for atmospheric characterization in a nearby triple M-dwarf system
Published 19-04-2024“…A&A 687, A48 (2024) Small planets transiting bright nearby stars are essential to our understanding of the formation and evolution of exoplanetary systems…”
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Precise near-infrared photometry, accounting for precipitable water vapour at SPECULOOS Southern Observatory
Published 31-10-2022“…The variability induced by precipitable water vapour (PWV) can heavily affect the accuracy of time-series photometric measurements gathered from the ground,…”
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TESS discovery of a super-Earth orbiting the M dwarf star TOI-1680
Published 20-07-2023“…A&A 677, A31 (2023) We report the discovery by the TESS mission of a super-Earth on a 4.8-d orbit around an inactive M4.5 dwarf (TOI-1680) validated by…”
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LBT transmission spectroscopy of HAT-P-12b: confirmation of a cloudy atmosphere with no significant alkali features
Published 19-08-2020“…A&A 642, A98 (2020) The hot sub-Saturn-mass exoplanet HAT-P-12b is an ideal target for transmission spectroscopy because of its inflated radius. We observed…”
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A Study of Flares in the Ultra-Cool Regime from SPECULOOS-South
Published 21-04-2022“…We present a study of photometric flares on 154 low-mass ($\leq 0.2 \textrm{M}_{\odot}$) objects observed by the SPECULOOS-South Observatory from 1st June 2018…”
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A super-Earth and a mini-Neptune near the 2:1 MMR straddling the radius valley around the nearby mid-M dwarf TOI-2096
Published 14-03-2023“…A&A 672, A70 (2023) Several planetary formation models have been proposed to explain the observed abundance and variety of compositions of super-Earths and…”
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Global Analysis of the TRAPPIST Ultra-Cool Dwarf Transit Survey
Published 14-07-2020“…We conducted a global analysis of the TRAPPIST Ultra-Cool Dwarf Transit Survey - a prototype of the SPECULOOS transit search conducted with the TRAPPIST-South…”
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Development of the SPECULOOS exoplanet search project
Published 26-01-2021“…Proc. SPIE 11445, Ground-based and Airborne Telescopes VIII, 1144521 (13 December 2020) SPECULOOS (Search for habitable Planets EClipsing ULtra-cOOl Stars)…”
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TOI-2257 b: A highly eccentric long-period sub-Neptune transiting a nearby M dwarf
Published 02-11-2021“…A&A 657, A45 (2022) Thanks to the relative ease of finding and characterizing small planets around M dwarf stars, these objects have become cornerstones in the…”
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SPECULOOS -- Ultracool Dwarf Transit Survey: Target List and Strategy
Published 03-11-2020“…A&A 645, A100 (2021) One of the most promising avenues for the detailed study of temperate Earth-sized exoplanets is the detection of such planets in transit…”
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Mass and density of the transiting hot and rocky super-Earth LHS 1478 b (TOI-1640 b)
Published 06-04-2021“…A&A 649, A144 (2021) One of the main objectives of the Transiting Exoplanet Survey Satellite ({TESS}) mission is the discovery of small rocky planets around…”
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A super-Earth and a sub-Neptune orbiting the bright, quiet M3 dwarf TOI-1266
Published 09-09-2020“…A&A 642, A49 (2020) We report the discovery and characterisation of a super-Earth and a sub-Neptune transiting the bright ($K=8.8$), quiet, and nearby (37 pc)…”
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A hot mini-Neptune in the radius valley orbiting solar analogue HD 110113
Published in Monthly notices of the Royal Astronomical Society (01-04-2021)“…ABSTRACT We report the discovery of HD 110113 b (TESS object of interest-755.01), a transiting mini-Neptune exoplanet on a 2.5-d orbit around the…”
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