Search Results - "Dransfield, Georgina"
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Colour–magnitude diagrams of transiting exoplanets – III. A public code, nine strange planets, and the role of phosphine
Published in Monthly notices of the Royal Astronomical Society (01-11-2020)“…ABSTRACT Colour–magnitude diagrams provide a convenient way of comparing populations of similar objects. When well populated with precise measurements, they…”
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BEBOP II: sensitivity to sub-Saturn circumbinary planets using radial-velocities
Published in Monthly notices of the Royal Astronomical Society (23-02-2022)“…ABSTRACT BEBOP is a radial-velocity survey that monitors a sample of single-lined eclipsing binaries, in search of circumbinary planets by using…”
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A Possible Alignment Between the Orbits of Planetary Systems and their Visual Binary Companions
Published in The Astronomical journal (01-05-2022)“…Abstract Astronomers do not have a complete picture of the effects of wide-binary companions (semimajor axes greater than 100 au) on the formation and…”
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BEBOP III. Observations and an independent mass measurement of Kepler-16 (AB) b – the first circumbinary planet detected with radial velocities
Published in Monthly notices of the Royal Astronomical Society (23-02-2022)“…ABSTRACT The radial velocity method is amongst the most robust and most established means of detecting exoplanets. Yet, it has so far failed to detect…”
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New methods for radial-velocity measurements of double-lined binaries, and detection of a circumbinary planet orbiting TIC 172900988
Published in Monthly notices of the Royal Astronomical Society (01-01-2024)“…ABSTRACT Ongoing ground-based radial-velocity observations seeking to detect circumbinary planets focus on single-lined binaries even though over 9 in every 10…”
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HD 28109 Hosts A Trio of Transiting Neptunian Planets Including A Near-Resonant Pair, Confirmed By ASTEP From Antarctica
Published in Monthly notices of the Royal Astronomical Society (22-07-2022)“…We report on the discovery and characterization of three planets orbiting the F8 star HD 28109, which sits comfortably in TESS ’s continuous viewing zone. The…”
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A 1.55 R⊕ habitable-zone planet hosted by TOI-715, an M4 star near the ecliptic South Pole
Published in Monthly notices of the Royal Astronomical Society (01-01-2024)“…ABSTRACT A new generation of observatories is enabling detailed study of exoplanetary atmospheres and the diversity of alien climates, allowing us to seek…”
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The EBLM project X. Benchmark masses, radii, and temperatures for two fully convective M-dwarfs using K2
Published in Monthly notices of the Royal Astronomical Society (01-06-2023)“…ABSTRACT M-dwarfs are the most abundant stars in the galaxy and popular targets for exoplanet searches. However, their intrinsic faintness and complex spectra…”
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TESS discovery of a sub-Neptune orbiting a mid-M dwarf TOI-2136
Published in Monthly notices of the Royal Astronomical Society (29-06-2022)“…ABSTRACT We present the discovery of TOI-2136 b, a sub-Neptune planet transiting a nearby M4.5V-type star every 7.85 d, identified through photometric…”
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TOI-2525 b and c: A Pair of Massive Warm Giant Planets with Strong Transit Timing Variations Revealed by TESS
Published in The Astronomical journal (01-04-2023)“…Abstract The K-type star TOI-2525 has an estimated mass of M = 0.849 − 0.033 + 0.024 M ⊙ and radius of R = 0.785 − 0.007 + 0.007 R ⊙ observed by the TESS…”
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The EBLM Project XII. An eccentric, long-period eclipsing binary with a companion near the hydrogen-burning limit
Published in Monthly notices of the Royal Astronomical Society (25-04-2024)“…ABSTRACT In the hunt for Earth-like exoplanets, it is crucial to have reliable host star parameters, as they have a direct impact on the accuracy and precision…”
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TOI 4201 b and TOI 5344 b: Discovery of Two Transiting Giant Planets around M-dwarf Stars and Revised Parameters for Three Others
Published in The Astronomical journal (01-10-2023)“…Abstract We present the discovery from the TESS mission of two giant planets transiting M-dwarf stars: TOI 4201 b and TOI 5344 b. We also provide precise…”
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BEBOP V. Homogeneous stellar analysis of potential circumbinary planet hosts
Published in Monthly notices of the Royal Astronomical Society (17-06-2024)“…Planets orbiting binary systems are relatively unexplored compared to those around single stars. Detections of circumbinary planets and planetary systems offer…”
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Transit timings variations in the three-planet system: TOI-270
Published in Monthly notices of the Royal Astronomical Society (01-03-2022)“…ABSTRACT We present ground- and space-based photometric observations of TOI-270 (L231-32), a system of three transiting planets consisting of one super-Earth…”
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A Massive Hot Jupiter Orbiting a Metal-rich Early M Star Discovered in the TESS Full-frame Images
Published in The Astronomical journal (01-10-2023)“…Abstract Observations and statistical studies have shown that giant planets are rare around M dwarfs compared with Sun-like stars. The formation mechanism of…”
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Three Long-period Transiting Giant Planets from TESS
Published in The Astronomical journal (01-06-2023)“…Abstract We report the discovery and orbital characterization of three new transiting warm giant planets. These systems were initially identified as presenting…”
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TOI-199 b: A Well-characterized 100 day Transiting Warm Giant Planet with TTVs Seen from Antarctica
Published in The Astronomical journal (01-11-2023)“…Abstract We present the spectroscopic confirmation and precise mass measurement of the warm giant planet TOI-199 b. This planet was first identified in TESS…”
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TOI-2379 b and TOI-2384 b: two super-Jupiter mass planets transiting low-mass host stars
Published in Monthly notices of the Royal Astronomical Society (01-10-2024)“…ABSTRACT Short-period gas giant planets have been shown to be significantly rarer for host stars less massive than the Sun. We report the discovery of two…”
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An M dwarf accompanied by a close-in giant orbiter with SPECULOOS
Published in Monthly notices of the Royal Astronomical Society. Letters (01-10-2023)“…ABSTRACT In the last decade, a dozen close-in giant planets have been discovered orbiting stars with spectral types ranging from M0 to M4, a mystery since…”
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NGTS clusters survey – III. A low-mass eclipsing binary in the Blanco 1 open cluster spanning the fully convective boundary
Published in Monthly notices of the Royal Astronomical Society (01-11-2021)“…ABSTRACT We present the discovery and characterization of an eclipsing binary identified by the Next Generation Transit Survey in the ∼115-Myr-old Blanco 1…”
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