Search Results - "Law, Nicholas M."
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EvryFlare. I. Long-term Evryscope Monitoring of Flares from the Cool Stars across Half the Southern Sky
Published in The Astrophysical journal (10-08-2019)“…We search for superflares from 4068 cool stars in 2+ yr of Evryscope photometry, focusing on those with high-cadence data from both Evryscope and the…”
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EvryFlare. III. Temperature Evolution and Habitability Impacts of Dozens of Superflares Observed Simultaneously by Evryscope and TESS
Published in The Astrophysical journal (01-10-2020)“…Superflares may provide the dominant source of biologically relevant UV radiation to rocky habitable-zone M-dwarf planets (M-Earths), altering planetary…”
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ROBOTIC LASER ADAPTIVE OPTICS IMAGING OF 715 KEPLER EXOPLANET CANDIDATES USING ROBO-AO
Published in The Astrophysical journal (10-08-2014)“…The Robo-AO Kepler Planetary Candidate Survey is observing every Kepler planet candidate host star with laser adaptive optics imaging to search for blended…”
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Evryscope Science: Exploring the Potential of All-Sky Gigapixel-Scale Telescopes
Published in Publications of the Astronomical Society of the Pacific (01-03-2015)“…Low-cost mass-produced sensors and optics have recently made it feasible to build telescope arrays which observe the entire accessible sky simultaneously. In…”
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The Evryscope Fast Transient Engine: Real-time Detection for Rapidly Evolving Transients
Published in The Astrophysical journal. Supplement series (01-04-2023)“…Abstract Astrophysical transients with rapid developments on subhour timescales are intrinsically rare. Due to their short durations, events like stellar…”
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IPAC Image Processing and Data Archiving for the Palomar Transient Factory
Published in Publications of the Astronomical Society of the Pacific (01-07-2014)“…The Palomar Transient Factory (PTF) is a multiepochal robotic survey of the northern sky that acquires data for the scientific study of transient and variable…”
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Astrometric Microlensing by Local Dark Matter Subhalos
Published in The Astrophysical journal (01-03-2011)“…High-resolution N-body simulations of dark matter halos indicate that the Milky Way contains numerous subhalos. When a dark matter subhalo passes in front of a…”
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THE NEAR-ULTRAVIOLET LUMINOSITY FUNCTION OF YOUNG, EARLY M-TYPE DWARF STARS
Published in The Astrophysical journal (01-01-2015)“…Planets orbiting within the close-in habitable zones of M dwarf stars will be exposed to elevated high-energy radiation driven by strong magnetohydrodynamic…”
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TOI-132 b: A short-period planet in the Neptune desert transiting a V = 11.3 G-type star
Published in Monthly notices of the Royal Astronomical Society (01-03-2020)“…ABSTRACT The Neptune desert is a feature seen in the radius-period plane, whereby a notable dearth of short period, Neptune-like planets is found. Here, we…”
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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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MULTIPLICITY OF THE GALACTIC SENIOR CITIZENS: A HIGH-RESOLUTION SEARCH FOR COOL SUBDWARF COMPANIONS
Published in The Astrophysical journal (01-05-2015)“…ABSTRACT Cool subdwarfs are the oldest members of the low-mass stellar population. Mostly present in the galactic halo, subdwarfs are characterized by their…”
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EvryFlare. iv. Detection of Periodicity in Flare Occurrence from Cool Stars with TESS
Published in The Astrophysical journal (01-10-2021)“…Abstract Phased flaring, or the periodic occurrence of stellar flares, may probe electromagnetic star−planet interaction (SPI), binary interaction, or magnetic…”
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When Do Stalled Stars Resume Spinning Down? Advancing Gyrochronology with Ruprecht 147
Published in The Astrophysical journal (01-12-2020)“…Recent measurements of rotation periods ( ) in the benchmark open clusters Praesepe (670 Myr), NGC 6811 (1 Gyr), and NGC 752 (1.4 Gyr) demonstrate that, after…”
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Building the Evryscope: Hardware Design and Performance
Published in Publications of the Astronomical Society of the Pacific (01-07-2019)“…The Evryscope is a telescope array designed to open a new parameter space in optical astronomy, detecting short-timescale events across extremely large sky…”
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EvryFlare. II. Rotation Periods of the Cool Flare Stars in TESS across Half the Southern Sky
Published in The Astrophysical journal (01-06-2020)“…We measure rotation periods and sinusoidal amplitudes in Evryscope light curves for 122 two-minute K5-M4 TESS targets selected for strong flaring. The…”
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Low-cost Access to the Deep, High-cadence Sky: the Argus Optical Array
Published in Publications of the Astronomical Society of the Pacific (01-03-2022)“…Abstract New mass-produced, wide-field, small-aperture telescopes have the potential to revolutionize ground-based astronomy by greatly reducing the cost of…”
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Three K2 Campaigns Yield Rotation Periods for 1013 Stars in Praesepe
Published in The Astrophysical journal (01-11-2021)“…Abstract We use three campaigns of K2 observations to complete the census of rotation in low-mass members of the benchmark, ≈670 Myr old open cluster Praesepe…”
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The Elusive Majority of Young Moving Groups. I. Young Binaries and Lithium-rich Stars in the Solar Neighborhood
Published in The Astrophysical journal (20-05-2019)“…Young stars in the solar neighborhood serve as nearby probes of stellar evolution and represent promising targets to directly image self-luminous giant…”
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Evryscope and K2 Constraints on TRAPPIST-1 Superflare Occurrence and Planetary Habitability
Published in The Astrophysical journal (01-09-2020)“…The nearby ultracool dwarf TRAPPIST-1 possesses several Earth-sized terrestrial planets, three of which have equilibrium temperatures that may support liquid…”
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WHY ARE RAPIDLY ROTATING M DWARFS IN THE PLEIADES SO (INFRA)RED? NEW PERIOD MEASUREMENTS CONFIRM ROTATION-DEPENDENT COLOR OFFSETS FROM THE CLUSTER SEQUENCE
Published in The Astrophysical journal (10-05-2016)“…ABSTRACT Stellar rotation periods (Prot) measured in open clusters have proved to be extremely useful for studying stars' angular momentum content and…”
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