Search Results - "Cabot, Samuel H C"
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Detection of neutral atomic species in the ultra-hot Jupiter WASP-121b
Published in Monthly notices of the Royal Astronomical Society (01-05-2020)“…ABSTRACT The class of ultra-hot Jupiters comprises giant exoplanets undergoing intense irradiation from their host stars. They have proved to be a particularly…”
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On the robustness of analysis techniques for molecular detections using high-resolution exoplanet spectroscopy
Published in Monthly notices of the Royal Astronomical Society (01-02-2019)Get full text
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X-Rays Trace the Volatile Content of Interstellar Objects
Published in The Astrophysical journal (01-10-2023)“…The nondetection of a coma surrounding 1I/‘Oumuamua, the first discovered interstellar object (ISO), has prompted a variety of hypotheses to explain its…”
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Transmission Spectroscopy of the Lowest-density Gas Giant: Metals and a Potential Extended Outflow in HAT-P-67b
Published in The Astronomical journal (01-08-2023)“…Extremely low-density exoplanets are tantalizing targets for atmospheric characterization because of their promisingly large signals in transmission…”
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High-resolution Spectroscopic Reconnaissance of a Temperate Sub-Neptune
Published in Astrophysical journal. Letters (01-05-2024)“…The study of temperate sub-Neptunes is the new frontier in exoplanetary science. A major development in the past year has been the first detection of…”
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EXPRES. IV. Two Additional Planets Orbiting ρ Coronae Borealis Reveal Uncommon System Architecture
Published in The Astronomical journal (01-08-2023)“…Thousands of exoplanet detections have been made over the last 25 years using Doppler observations, transit photometry, direct imaging, and astrometry. Each of…”
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Multiepoch Detections of the Extended Atmosphere and Transmission Spectra of KELT-9b with a 1.5 m Telescope
Published in The Astronomical journal (01-03-2023)“…Irradiated Jovian atmospheres are complex and dynamic and can undergo temporal variations due to the close proximity of their parent stars. Of the Jovian…”
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A survey of sodium absorption in 10 giant exoplanets with high-resolution transmission spectroscopy
Published in Monthly notices of the Royal Astronomical Society (08-07-2022)“…ABSTRACT The alkali metal sodium (Na) is one of the most commonly detected chemical species in the upper atmospheres of giant exoplanets. In this work, we…”
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Mining the Ultrahot Skies of HAT-P-70b: Detection of a Profusion of Neutral and Ionized Species
Published in The Astronomical journal (01-02-2022)“…With an equilibrium temperature above 2500 K, the recently discovered HAT-P-70b belongs to a new class of exoplanets known as ultrahot Jupiters: extremely…”
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Constraints on the Occurrence of ‘Oumuamua-Like Objects
Published in The Astrophysical journal (01-11-2021)“…At present, there exists no consensus in the astronomical community regarding either the bulk composition or the formation mechanism for the interstellar…”
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Stacked Periodograms as a Probe of Exoplanetary Populations
Published in The Astronomical journal (01-05-2022)“…Ongoing, extreme-precision Doppler radial-velocity (RV) surveys seek planets with masses less than several M ⊕ ; population-level studies to determine the…”
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On the Spin Dynamics of Elongated Minor Bodies with Applications to a Possible Solar System Analogue Composition for ‘Oumuamua
Published in The Astrophysical journal (01-10-2021)“…The first interstellar object, 1I/2017 U1 (‘Oumuamua), exhibited several unique properties, including an extreme aspect ratio, a lack of typical cometary…”
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Assessing telluric correction methods for Na detections with high-resolution exoplanet transmission spectroscopy
Published in Monthly notices of the Royal Astronomical Society (01-04-2021)“…ABSTRACT Using high-resolution ground-based transmission spectroscopy to probe exoplanetary atmospheres is difficult due to the inherent telluric contamination…”
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The EXPRES Stellar Signals Project II. State of the Field in Disentangling Photospheric Velocities
Published in The Astronomical journal (01-04-2022)“…Measured spectral shifts due to intrinsic stellar variability (e.g., pulsations, granulation) and activity (e.g., spots, plages) are the largest source of…”
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TOI-1518b: A Misaligned Ultra-hot Jupiter with Iron in Its Atmosphere
Published in The Astrophysical journal (01-11-2021)“…We present the discovery of TOI-1518b—an ultra-hot Jupiter orbiting a bright star (V = 8.95). The transiting planet is confirmed using high-resolution optical…”
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C iv and He ii line emission of Lyman α blobs: powered by shock-heated gas
Published in Monthly notices of the Royal Astronomical Society (11-10-2016)“…Utilizing ab initio ultrahigh resolution hydrodynamical simulations, we investigate the properties of the interstellar and circumgalactic medium of Lyα blobs…”
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EXPRES. III. Revealing the Stellar Activity Radial Velocity Signature of ϵ Eridani with Photometry and Interferometry
Published in The Astronomical journal (01-01-2022)“…The distortions of absorption line profiles caused by photospheric brightness variations on the surfaces of cool, main-sequence stars can mimic or overwhelm…”
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Measured spin–orbit alignment of ultra-short-period super-Earth 55 Cancri e
Published in Nature astronomy (01-02-2023)“…A planet’s orbital alignment places important constraints on how a planet formed and consequently evolved. The dominant formation pathway of ultra-short-period…”
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Author Correction: Measured spin–orbit alignment of ultra-short-period super-Earth 55 Cancri e
Published in Nature astronomy (01-03-2023)Get full text
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Stacked Periodograms as a Probe of Exoplanetary Populations
Published 22-02-2022“…Ongoing, extreme-precision Doppler radial velocity surveys seek planets with masses less than several M$_\oplus$; population-level studies to determine the…”
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