Search Results - "Teske, Johanna K."
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THE CURIOUS CASE OF ELEMENTAL ABUNDANCE DIFFERENCES IN THE DUAL HOT JUPITER HOSTS WASP-94A AND B
Published in The Astrophysical journal (01-03-2016)“…ABSTRACT Binary stars provide an ideal laboratory for investigating the potential effects of planet formation on stellar composition. Assuming that the 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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An ALMA and MagAO Study of the Substellar Companion GQ Lup B
Published in The Astrophysical journal (20-02-2017)“…Abstract Multi-wavelength observations provide a complementary view of the formation of young, directly imaged planet-mass companions. We report the ALMA 1.3…”
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Statistics of the Chemical Composition of Solar Analog Stars and Links to Planet Formation
Published in The Astrophysical journal (01-02-2021)“…The Sun has been found to be depleted in refractory (rock-forming) elements relative to nearby solar analogs, suggesting a potential indicator of planet…”
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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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CARBON AND OXYGEN ABUNDANCES IN COOL METAL-RICH EXOPLANET HOSTS: A CASE STUDY OF THE C/O RATIO OF 55 CANCRI
Published in The Astrophysical journal (01-12-2013)“…The super-Earth exoplanet 55 Cnc e, the smallest member of a five-planet system, has recently been observed to transit its host star. The radius estimates from…”
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The Star–Planet Composition Connection
Published in Annual review of astronomy and astrophysics (13-09-2024)“…The mantra “know thy star, know thy planet” has proven to be very important for many aspects of exoplanet science. Here I review how stellar abundances inform…”
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KELT-9 and its ultra-hot Jupiter: Stellar parameters, composition, and planetary pollution
Published in Monthly notices of the Royal Astronomical Society (01-01-2023)“…ABSTRACT KELT-9b is an ultra-hot Jupiter observed to be undergoing extreme mass-loss. Its A0-type host star has a radiative envelope, which makes its surface…”
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C/O RATIOS OF STARS WITH TRANSITING HOT JUPITER EXOPLANETS
Published in The Astrophysical journal (10-06-2014)“…The relative abundances of carbon and oxygen have long been recognized as fundamental diagnostics of stellar chemical evolution. Now, the growing number of…”
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Testing the Limits of Precise Subgiant Characterization with APOGEE and Gaia: Opening a Window to Unprecedented Astrophysical Studies
Published in The Astrophysical journal (01-07-2021)“…Abstract Given their location on the Hertzsprung-Russell (H-R) diagram, thoroughly characterized subgiant stars can place stringent constraints on a wide range…”
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Investigating the physical properties of transiting hot Jupiters with the 1.5-m Kuiper Telescope
Published in Monthly notices of the Royal Astronomical Society (01-12-2017)“…Abstract We present new photometric data of 11 hot Jupiter transiting exoplanets (CoRoT-12b, HAT-P-5b, HAT-P-12b, HAT-P-33b, HAT-P-37b, WASP-2b, WASP-24b,…”
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HD 222237 b: a long-period super-Jupiter around a nearby star revealed by radial-velocity and Hipparcos–Gaia astrometry
Published in Monthly notices of the Royal Astronomical Society (15-10-2024)“…ABSTRACT Giant planets on long-period orbits around the nearest stars are among the easiest to directly image. Unfortunately these planets are difficult to…”
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A SUBTLE INFRARED EXCESS ASSOCIATED WITH A YOUNG WHITE DWARF IN THE EDINBURGH-CAPE BLUE OBJECT SURVEY
Published in The Astrophysical journal (01-11-2016)“…ABSTRACT We report the discovery of a subtle infrared excess associated with the young white dwarf EC 05365-4749 at 3.35 and 4.6 m. Follow-up spectroscopic…”
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The Magellan/PFS Exoplanet Search: a 55-d period dense Neptune transiting the bright (V = 8.6) star HD 95338
Published in Monthly notices of the Royal Astronomical Society (01-08-2020)“…ABSTRACT We report the detection of a transiting, dense Neptune planet candidate orbiting the bright (V = 8.6) K0.5V star HD 95338. Detection of the 55-d…”
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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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Doppler Constraints on Planetary Companions to Nearby Sun-like Stars: An Archival Radial Velocity Survey of Southern Targets for Proposed NASA Direct Imaging Missions
Published in The Astronomical journal (01-04-2023)“…Abstract Directly imaging temperate rocky planets orbiting nearby, Sun-like stars with a 6 m class IR/O/UV space telescope, recently dubbed the Habitable…”
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Revisiting the HD 21749 planetary system with stellar activity modelling
Published in Monthly notices of the Royal Astronomical Society (01-03-2021)“…ABSTRACT HD 21749 is a bright (V = 8.1 mag) K dwarf at 16 pc known to host an inner terrestrial planet HD 21749c as well as an outer sub-Neptune HD 21749b,…”
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Single-star Warm-Jupiter Systems Tend to Be Aligned, Even around Hot Stellar Hosts: No T eff –λ Dependency
Published in Astrophysical journal. Letters (01-09-2024)“…Abstract The stellar obliquity distribution of warm-Jupiter systems is crucial for constraining the dynamical history of Jovian exoplanets, as the warm…”
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DETAILED ABUNDANCES OF STARS WITH SMALL PLANETS DISCOVERED BY KEPLER . I. THE FIRST SAMPLE
Published in The Astrophysical journal (10-12-2015)“…We present newly derived stellar parameters and the detailed abundances of 19 elements of seven stars with small planets discovered by NASA's Kepler Mission…”
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XO-2b: A HOT JUPITER WITH A VARIABLE HOST STAR THAT POTENTIALLY AFFECTS ITS MEASURED TRANSIT DEPTH
Published in The Astrophysical journal (01-09-2015)“…ABSTRACT The transiting hot Jupiter XO-2b is an ideal target for multi-object photometry and spectroscopy as it has a relatively bright (V-mag = 11.25) K0V…”
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