Search Results - "Collins, Karen A"
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Occurrence Rate of Hot Jupiters Around Early-type M Dwarfs Based on Transiting Exoplanet Survey Satellite Data
Published in The Astronomical journal (01-01-2023)“…Abstract We present an estimate of the occurrence rate of hot Jupiters (7 R ⊕ ≤ R p ≤ 2 R J , 0.8 ≤ P b ≤ 10 days) around early-type M dwarfs based on stars…”
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The PFS View of TOI-677 b: A Spin–Orbit Aligned Warm Jupiter in a Dynamically Hot System
Published in The Astronomical journal (01-04-2024)“…Abstract TOI-677 b is part of an emerging class of “tidally detached” gas giants ( a / R ⋆ ≳ 11) that exhibit large orbital eccentricities and yet low stellar…”
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The K2 and TESS Synergy. III. Search and Rescue of the Lost Ephemeris for K2's First Planet
Published in The Astronomical journal (01-10-2024)“…Abstract K2-2 b/HIP 116454 b, the first exoplanet discovery by K2 during its Two-Wheeled Concept Engineering Test, is a sub-Neptune (2.5 ± 0.1 R ⊕ , 9.7 ± 1.2…”
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Evidence for Low-level Dynamical Excitation in Near-resonant Exoplanet Systems
Published in The Astronomical journal (01-12-2023)“…Abstract The geometries of near-resonant planetary systems offer a relatively pristine window into the initial conditions of exoplanet systems. Given that…”
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LHS 475 b: A Potential Venus Analog Orbiting a Nearby M Dwarf
Published in The Astronomical journal (01-05-2024)“…Abstract Based on photometric observations by TESS, we present the discovery of a potential Venus analog transiting LHS 475, an M3 dwarf located 12.5 pc from…”
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TOI 762 A b and TIC 46432937 b: Two Giant Planets Transiting M-dwarf Stars
Published in The Astronomical journal (01-11-2024)“…Abstract We present the discovery of TOI 762 A b and TIC 46432937 b, two giant planets transiting M-dwarf stars. Transits of both systems were first detected…”
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Validation of a Third Planet in the LHS 1678 System
Published in The Astronomical journal (01-06-2024)“…Abstract The nearby LHS 1678 (TOI-696) system contains two confirmed planets and a wide-orbit, likely brown-dwarf companion, which orbit an M2 dwarf with a…”
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Early Results from the HUMDRUM Survey: A Small, Earth-mass Planet Orbits TOI-1450A
Published in The Astronomical journal (01-08-2024)“…Abstract M-dwarf stars provide us with an ideal opportunity to study nearby small planets. The HUnting for M Dwarf Rocky planets Using MAROON-X (HUMDRUM)…”
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TOI-1859b: A 64 Day Warm Jupiter on an Eccentric and Misaligned Orbit
Published in Astrophysical journal. Letters (01-07-2023)“…Abstract Warm Jupiters are close-in giant planets with relatively large planet–star separations (i.e., 10 < a / R ⋆ < 100). Given their weak tidal interactions…”
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TESS Investigation—Demographics of Young Exoplanets (TI-DYE). II. A Second Giant Planet in the 17 Myr System HIP 67522
Published in Astrophysical journal. Letters (01-09-2024)“…Abstract The youngest (<50 Myr) planets are vital to understand planet formation and early evolution. The 17 Myr system HIP 67522 is already known to host a…”
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TOI-1075 b: A Dense, Massive, Ultra-short-period Hot Super-Earth Straddling the Radius Gap
Published in The Astronomical journal (01-02-2023)“…Abstract Populating the exoplanet mass–radius diagram in order to identify the underlying relationship that governs planet composition is driving an…”
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Validating AU Microscopii d with Transit Timing Variations
Published in The Astronomical journal (01-12-2023)“…Abstract AU Mic is a young (22 Myr), nearby exoplanetary system that exhibits excess transit timing variations (TTVs) that cannot be accounted for by the two…”
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TESS Hunt for Young and Maturing Exoplanets (THYME). XI. An Earth-sized Planet Orbiting a Nearby, Solar-like Host in the 400 Myr Ursa Major Moving Group
Published in The Astronomical journal (01-02-2024)“…Abstract Young terrestrial worlds are critical test beds to constrain prevailing theories of planetary formation and evolution. We present the discovery of HD…”
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TOI-1994b: A Low-mass Eccentric Brown Dwarf Transiting A Subgiant Star
Published in The Astronomical journal (01-03-2024)“…Abstract We present the discovery of TOI-1994b, a low-mass brown dwarf transiting a hot subgiant star on a moderately eccentric orbit. TOI-1994 has an…”
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The K2 and TESS Synergy. II. Revisiting 26 Systems in the TESS Primary Mission
Published in The Astronomical journal (01-04-2023)“…Abstract The legacy of NASA’s K2 mission has provided hundreds of transiting exoplanets that can be revisited by new and future facilities for further…”
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GJ 238 b: A 0.57 Earth Radius Planet Orbiting an M2.5 Dwarf Star at 15.2 pc
Published in The Astronomical journal (01-06-2024)“…Abstract We report the discovery of the transiting planet GJ 238 b, with a radius of 0.566 ± 0.014 R ⊕ (1.064 ± 0.026 times the radius of Mars) and an orbital…”
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A Low-mass, Pre-main-sequence Eclipsing Binary in the 40 Myr Columba Association—Fundamental Stellar Parameters and Modeling the Effect of Star Spots
Published in The Astronomical journal (01-02-2023)“…Abstract Young eclipsing binaries (EBs) are powerful probes of early stellar evolution. Current models are unable to simultaneously reproduce the measured and…”
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A Transiting Super-Earth in the Radius Valley and an Outer Planet Candidate Around HD 307842
Published in The Astronomical journal (01-07-2023)“…Abstract We report the confirmation of a TESS-discovered transiting super-Earth planet orbiting a mid-G star, HD 307842 (TOI-784). The planet has a period of…”
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TOI-4600 b and c: Two Long-period Giant Planets Orbiting an Early K Dwarf
Published in Astrophysical journal. Letters (01-09-2023)“…Abstract We report the discovery and validation of two long-period giant exoplanets orbiting the early K dwarf TOI-4600 ( V = 12.6, T = 11.9), first detected…”
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TESS Discovery of Twin Planets near 2:1 Resonance around Early M Dwarf TOI 4342
Published in The Astronomical journal (01-03-2023)“…Abstract With data from the Transiting Exoplanet Survey Satellite (TESS), we showcase improvements to the MIT Quick Look Pipeline (QLP) through the discovery…”
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