Search Results - "Latham, David W"
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Absence of a thick atmosphere on the terrestrial exoplanet LHS 3844b
Published in Nature (London) (01-09-2019)“…Most known terrestrial planets orbit small stars with radii less than 60 per cent of that of the Sun 1 , 2 . Theoretical models predict that these planets are…”
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A noninteracting low-mass black hole-giant star binary system
Published in Science (American Association for the Advancement of Science) (01-11-2019)“…Black hole binary systems with companion stars are typically found via their x-ray emission, generated by interaction and accretion. Noninteracting binaries…”
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A spin-down clock for cool stars from observations of a 2.5-billion-year-old cluster
Published in Nature (London) (29-01-2015)“…The measurement of the rotational periods of 30 cool stars in the 2.5-billion-year-old cluster NGC 6819 allows the calibration of gyrochronology — the…”
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THE TRANSITING EXOPLANET SURVEY SATELLITE: SIMULATIONS OF PLANET DETECTIONS AND ASTROPHYSICAL FALSE POSITIVES
Published in The Astrophysical journal (10-08-2015)“…ABSTRACT The Transiting Exoplanet Survey Satellite (TESS) is a NASA-sponsored Explorer mission that will perform a wide-field survey for planets that transit…”
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Three regimes of extrasolar planet radius inferred from host star metallicities
Published in Nature (London) (29-05-2014)“…Analysis of the metallicities of more than 400 stars hosting 600 candidate extrasolar planets shows that the planets can be categorized by size into three…”
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A disintegrating minor planet transiting a white dwarf
Published in Nature (London) (22-10-2015)“…The atmospheres of white dwarfs often contain elements heavier than helium, even though these elements would be expected to settle into the stars’ interiors;…”
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WIYN Open Cluster Study. XC. Radial-velocity Measurements and Spectroscopic Binary Orbits in the Open Cluster NGC 2506
Published in The Astronomical journal (01-11-2024)“…Abstract NGC 2506 is a rich, intermediate-age (2.0 Gyr), metal-poor ([Fe/H] ∼ −0.2) open cluster. This work presents the results of 12,157 spectroscopic…”
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Dynamical Masses for the Hyades Binary System vB 120
Published in The Astrophysical journal (01-01-2024)“…Abstract We report spectroscopic observations of vB 120 (HD 30712), a 5.7 yr astrometric–spectroscopic binary system in the Hyades cluster. We combine our…”
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Standing on the Shoulders of Dwarfs: the Kepler Asteroseismic LEGACY Sample. I. Oscillation Mode Parameters
Published in The Astrophysical journal (01-02-2017)“…The advent of space-based missions like Kepler has revolutionized the study of solar-type stars, particularly through the measurement and modeling of their…”
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The Metallicity Distribution and Hot Jupiter Rate of the Kepler Field: Hectochelle High-resolution Spectroscopy for 776 Kepler Target Stars
Published in The Astrophysical journal (20-03-2017)“…The occurrence rate of hot Jupiters from the Kepler transit survey is roughly half that of radial velocity surveys targeting solar neighborhood stars. One…”
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Dynamical Masses for the Triple System HD 28363 in the Hyades Cluster
Published in The Astrophysical journal (01-11-2019)“…The star HD 28363 in the Hyades cluster has been known for over a century as a visual binary with a period of 40 yr. The secondary is, in turn, a single-lined…”
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Mid-to-late M Dwarfs Lack Jupiter Analogs
Published in The Astronomical journal (01-07-2023)“…Abstract Cold Jovian planets play an important role in sculpting the dynamical environment in which inner terrestrial planets form. The core accretion model…”
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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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Flares, Rotation, and Planets of the AU Mic System from TESS Observations
Published in The Astronomical journal (01-04-2022)“…Abstract AU Mic is a young (∼24 Myr), pre-main-sequence M dwarf star that was observed in the first month of science observations of the Transiting Exoplanet…”
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THE KEPLER-10 PLANETARY SYSTEM REVISITED BY HARPS-N: A HOT ROCKY WORLD AND A SOLID NEPTUNE-MASS PLANET
Published in The Astrophysical journal (10-07-2014)“…Kepler-10b was the first rocky planet detected by the Kepler satellite and confirmed with radial velocity follow-up observations from Keck-HIRES. The mass of…”
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A super-Earth transiting a nearby low-mass star
Published in Nature (London) (17-12-2009)“…A super-Earth with atmosphere 'Super-Earths' are extrasolar planets about two to ten times the mass of the Earth, too small to be considered 'Jupiters'…”
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The Mass Dependence of Hα Emission and Stellar Spindown for Fully Convective M Dwarfs
Published in The Astrophysical journal (01-05-2024)“…Abstract Fully convective M dwarfs typically remain rapidly rotating and magnetically active for billions of years, followed by an abrupt and mass-dependent…”
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Kepler-102: Masses and Compositions for a Super-Earth and Sub-Neptune Orbiting an Active Star
Published in The Astronomical journal (01-02-2023)“…Abstract Radial velocity (RV) measurements of transiting multiplanet systems allow us to understand the densities and compositions of planets unlike those in…”
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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)“…Abstract Irradiated Jovian atmospheres are complex and dynamic and can undergo temporal variations due to the close proximity of their parent stars. Of the…”
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Orbits and Dynamical Masses for Six Binary Systems in the Hyades Cluster
Published in The Astrophysical journal (01-08-2024)“…Abstract We report long-baseline interferometric observations with the CHARA Array that resolve six previously known double-lined spectroscopic binary systems…”
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