Search Results - "Irwin, Jonathan M."
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Flare Rates, Rotation Periods, and Spectroscopic Activity Indicators of a Volume-complete Sample of Mid- to Late-M Dwarfs within 15 pc
Published in The Astrophysical journal (01-12-2020)“…We present a study of flare rates, rotation periods, and spectroscopic activity indicators of 125 single stars within 15 parsecs and with masses between 0.1…”
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2
Active Stars in the Spectroscopic Survey of Mid-to-late M Dwarfs within 15 pc
Published in The Astronomical journal (01-07-2023)“…Abstract We present results from the volume-complete spectroscopic survey of 0.1–0.3 M ⊙ M dwarfs within 15 pc. This work discusses the active sample without…”
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TRIGONOMETRIC PARALLAXES FOR 1507 NEARBY MID-TO-LATE M DWARFS
Published in The Astrophysical journal (01-04-2014)“…The MEarth survey is a search for small rocky planets around the smallest, nearest stars to the Sun as identified by high proper motion with red colors. We…”
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4
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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CALIBRATION OF THE MEARTH PHOTOMETRIC SYSTEM: OPTICAL MAGNITUDES AND PHOTOMETRIC METALLICITY ESTIMATES FOR 1802 NEARBY M-DWARFS
Published in The Astrophysical journal (20-02-2016)“…ABSTRACT The MEarth Project is a photometric survey systematically searching the smallest stars near the Sun for transiting rocky planets. Since 2008, MEarth…”
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Hazy with a Chance of Star Spots: Constraining the Atmosphere of Young Planet K2-33b
Published in The Astronomical journal (01-01-2023)“…Abstract Although all-sky surveys have led to the discovery of dozens of young planets, little is known about their atmospheres. Here, we present…”
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Galactic Kinematics and Observed Flare Rates of a Volume-complete Sample of Mid-to-late M Dwarfs: Constraints on the History of the Stellar Radiation Environment of Planets Orbiting Low-mass Stars
Published in The Astrophysical journal (01-08-2022)“…Abstract We present a study of the relationship between Galactic kinematics, flare rates, chromospheric activity, and rotation periods for a volume-complete,…”
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Constraints on the Spindown of Fully Convective M Dwarfs Using Wide Field Binaries
Published in The Astrophysical journal (01-09-2022)“…Abstract M dwarfs remain active over longer timescales than their Sunlike counterparts, with potentially devastating implications for the atmospheres of their…”
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9
A temperate rocky super-Earth transiting a nearby cool star
Published in Nature (London) (20-04-2017)“…An Earth-sized planet is observed orbiting a nearby star within the liquid-water, habitable zone, the atmospheric composition of which could be determined from…”
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The Featureless HST/WFC3 Transmission Spectrum of the Rocky Exoplanet GJ 1132b: No Evidence for a Cloud-free Primordial Atmosphere and Constraints on Starspot Contamination
Published in The Astronomical journal (01-08-2022)“…Abstract Orbiting an M dwarf 12 pc away, the transiting exoplanet GJ 1132b is a prime target for transmission spectroscopy. With a mass of 1.7 M ⊕ and radius…”
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SN 2012cg: EVIDENCE FOR INTERACTION BETWEEN A NORMAL SN Ia AND A NON-DEGENERATE BINARY COMPANION
Published in The Astrophysical journal (01-04-2016)“…ABSTRACT We report evidence for excess blue light from the Type Ia supernova (Sn Ia) SN 2012cg at 15 and 16 days before maximum B-band brightness. The emission…”
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LSPM J1112+7626: Detection of a 41 Day M-dwarf Eclipsing Binary from the MEarth Transit Survey
Published in The Astrophysical journal (01-12-2011)“…We report the detection of eclipses in LSPM J1112+7626, which we find to be a moderately bright (IC = 12.14 ? 0.05) very low mass binary system with an orbital…”
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Discovery and Precise Characterization by the MEarth Project of LP 661-13, an Eclipsing Binary Consisting of Two Fully Convective Low-mass Stars
Published in The Astrophysical journal (10-02-2017)“…We report the detection of stellar eclipses in the LP 661-13 system. We present the discovery and characterization of this system, including high-resolution…”
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TOI-2119: a transiting brown dwarf orbiting an active M-dwarf from NASA’s TESS mission
Published in Monthly notices of the Royal Astronomical Society (06-07-2022)“…ABSTRACT We report the discovery of TOI-2119b, a transiting brown dwarf (BD) that orbits and is completely eclipsed by an active M-dwarf star. Using…”
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TOI-3235 b: A Transiting Giant Planet around an M4 Dwarf Star
Published in Astrophysical journal. Letters (01-03-2023)“…Abstract We present the discovery of TOI-3235 b, a short-period Jupiter orbiting an M dwarf with a stellar mass close to the critical mass at which stars…”
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The LHS 1678 System: Two Earth-sized Transiting Planets and an Astrometric Companion Orbiting an M Dwarf Near the Convective Boundary at 20 pc
Published in The Astronomical journal (01-04-2022)“…Abstract We present the Transiting Exoplanet Survey Satellite (TESS) discovery of the LHS 1678 (TOI-696) exoplanet system, comprised of two approximately…”
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The Isaac Newton Telescope Wide Field Camera survey of the Monoceros Ring: accretion origin or Galactic anomaly?
Published in Monthly notices of the Royal Astronomical Society (11-09-2005)“…We present the results of a wide-field camera survey of the stars in the Monoceros Ring, thought to be an additional structure in the Milky Way of unknown…”
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Validation of 13 Hot and Potentially Terrestrial TESS Planets
Published in The Astronomical journal (01-02-2022)“…Abstract The James Webb Space Telescope will be able to probe the atmospheres and surface properties of hot, terrestrial planets via emission spectroscopy. We…”
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Active Stars in the Spectroscopic Survey of Mid-to-Late M Dwarfs Within 15pc
Published 01-06-2023“…We present results from the volume-complete spectroscopic survey of 0.1-0.3M$_\odot$ M dwarfs within 15pc. This work discusses the active sample without close…”
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Constraints on the Spindown of Fully-Convective M Dwarfs Using Wide Field Binaries
Published 30-06-2022“…M dwarfs remain active over longer timescales than their Sunlike counterparts, with potentially devastating implications for the atmospheres of their planets…”
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