Nicholas J. Scott
A5066321181- Stellar, planetary, and galactic studies
- Astronomy and Astrophysical Research
- Astro and Planetary Science
- Astrophysics and Star Formation Studies
- Adaptive optics and wavefront sensing
- Astronomical Observations and Instrumentation
- Gamma-ray bursts and supernovae
- Radio Astronomy Observations and Technology
- Laser Applications in Dentistry and Medicine
- Astrophysical Phenomena and Observations
- Calibration and Measurement Techniques
- Space Exploration and Technology
- Planetary Science and Exploration
- Advanced Fiber Laser Technologies
- Solar and Space Plasma Dynamics
- Spectroscopy and Laser Applications
- Dermatologic Treatments and Research
- Intraocular Surgery and Lenses
- Laser-Matter Interactions and Applications
- Satellite Image Processing and Photogrammetry
- Scientific Research and Discoveries
- Geophysics and Gravity Measurements
- Photonic and Optical Devices
- Particle Accelerators and Free-Electron Lasers
- Photonic Crystal and Fiber Optics
Mount Wilson Observatory
2013-2024
Georgia State University
2012-2024
Ames Research Center
2016-2024
University of Exeter
2019
Chart Industries (United States)
2016
The University of Sydney
2016
Bay Area Environmental Research Institute
2016
Observatoire de Paris
2012-2015
Laboratoire d’études spatiales et d’instrumentation en astrophysique
2012-2013
Université de Versailles Saint-Quentin-en-Yvelines
2012-2013
We present 197 planet candidates discovered using data from the first year of NASA K2 mission (Campaigns 0-4), along with results an intensive program photometric analyses, stellar spectroscopy, high-resolution imaging, and statistical validation. distill these into sets 104 validated planets (57 in multi-planet systems), 30 false positives, 63 remaining candidates. Our systems span a range properties, median values R_P = 2.3 R_E, P=8.6 d, Tef 5300 K, Kp=12.7 mag. Stellar spectroscopy...
Human performance on diverse tests of intellect are impacted by a “general” regulatory factor that accounts for up to 50% the variance between individuals intelligence tests. Neurobiological determinants general cognitive abilities essentially unknown, owing in part paucity animal research wherein neurobiological analyses possible. We report methodology with which we have assessed individual differences learning laboratory mice. Abilities mice associative fear conditioning, operant...
We use near-infrared interferometric data coupled with trigonometric parallax values and spectral energy distribution fitting to directly determine stellar radii, effective temperatures luminosities for the exoplanet host stars 61 Vir, ρ CrB, GJ 176, 614, 649, 876, HD 1461, 7924, 33564, 107383 210702. Three of these targets are M dwarfs. Statistical uncertainties in radii range from 0.5 5 per cent 0.2 2 cent, respectively. For eight targets, this work presents first determined radius...
We investigated the environmental partitioning and particle characteristics of macro-, meso- microplastics their uptake into mussel, Mytilus edulis. Sediment samples, overlying seawater mussels from 9 intertidal locations in South West England were analysed for abundance type microplastic. Micro- mesoplastic-like particles found 88.5% 269 sampled, ranging 1.43 to 7.64 items per mussel. Of these plastic particles, 70.9% identified as semi-synthetic (mainly modified-cellulose). Mussel...
A new speckle and wide-field imaging instrument for the WIYN telescope called NN-EXPLORE Exoplanet Stellar Speckle Imager (NESSI) is described. NESSI offers simultaneous two-color diffraction-limited traditional validation characterization of transit precision RV exoplanet studies. Many targets will come from NASA K2 Transiting Survey Satellite (TESS) missions. capable resolving close binaries at sub-arcsecond separations down to diffraction limit >6 mag contrast difference in visible band...
Context. Dust is expected to be ubiquitous in extrasolar planetary systems owing the dynamical activity of minor bodies. Inner dust populations are, however, still poorly known because high contrast and small angular separation with respect their host star, yet, a proper characterisation exozodiacal mandatory for design future Earth-like planet imaging missions.
Two new imaging instruments, ‘Alopeke and Zorro, were designed, built, commissioned at the Gemini-North Gemini-South telescopes in 2018 2019, respectively. Here we describe them present results from over a year of operation. The two identical instruments are based on legacy DSSI (Differential Speckle Survey Instrument) instrument, successfully used for years WIYN Gemini Hawaii Chile. Zorro dual-channel imagers having both speckle (6.7″) “wide-field” (∼1 arcminute) field-of-view options. They...
Abstract Since 2014, NASA’s K 2 mission has observed large portions of the ecliptic plane in search transiting planets and detected hundreds planet candidates. With observations planned until at least early 2018, will continue to identify more We present here 275 candidates during Campaigns 0–10 that are orbiting stars brighter than 13 mag (in Kepler band) for which we have obtained high-resolution spectra ( R = 44,000). These analyzed using vespa package order calculate their false-positive...
We present the discovery and characterisation of two transiting planets observed by \textit{TESS} in light curves young bright (V=9.67) star HD73583 (TOI-560). perform an intensive spectroscopic photometric space- ground-based follow-up order to confirm characterise system. found that is a ($\sim 500$~Myr) active with rotational period $12.08 \pm 0.11 $\,d, mass radius $ 0.73 0.02 M_\odot$ $0.65 R_\odot$, respectively. b ($P_b=6.3980420 _{ - 0.0000062 }^{+0.0000067}$ d) has $10.2...
Abstract NASA’s Transiting Exoplanet Survey Satellite (TESS) mission promises to improve our understanding of hot Jupiters by providing an all-sky, magnitude-limited sample transiting suitable for population studies. Assembling such a requires confirming hundreds planet candidates with additional follow-up observations. Here we present 20 that were detected using TESS data and confirmed be planets through photometric, spectroscopic, imaging observations coordinated the Follow-up Observing...
Complications during laser lithotripsy include optical fiber bending failure resulting in endoscope damage and low irrigation rates leading to poor visibility. Both problems are related diameter limited by the holmium:YAG (Ho:YAG) (lambda = 2120 nm) multimode beam profile. This study exploits thulium 1908 profile for higher power transmission through smaller fibers. Thulium radiation with 1 ms pulse duration, of 10-30 Hz, 70-mu m-diameter spot was coupled into silica fibers 100, 150, 200 mum...
Forty-seven nearby main-sequence stars were surveyed with the Keck Interferometer mid-infrared Nulling instrument (KIN) between 2008 and 2011, searching for faint resolved emission from exozodiacal dust. Observations of a subset sample have already been reported, focusing essentially on no previously known Here we extend this previous analysis to whole KIN sample, including 22 more near- and/or far-infrared excesses. In addition an similar that first paper series, which was restricted 8–9 μm...
Planets around young stars trace the early evolution of planetary systems. We report discovery and validation two systems with ages $\lesssim 300$ Myr from observations by Transiting Exoplanet Survey Satellite. TOI-251 is a 40-320 old G star hosting 2.74 +0.18/-0.18 REarth mini-Neptune 4.94 day period. TOI-942 20-160 K system inflated Neptune-sized planets, TOI-942b orbiting period 4.32 days, radius 4.81 +0.20/-0.20 REarth, TOI-942c in 10.16 days 5.79 +0.19/-0.18 REarth. Though we cannot...
The Michigan Young Star Imager at CHARA (MYSTIC) is a K-band interferometric beam combining instrument funded by the U.S. National Science Foundation, designed primarily for imaging sub-au scale disk structures around nearby young stars and to probe planet formation process.Installed Array in July 2021, with baselines up 331 m, MYSTIC provides maximum angular resolution of λ∕2B ∼ 0.7 mas.The injects phase-corrected light from array into inexpensive, single-mode, polarization maintaining...
Abstract The Transiting Exoplanet Survey Satellite (TESS) has discovered hundreds of new worlds, with TESS planet candidates now outnumbering the total number confirmed planets from Kepler. Owing to differences in survey design, continues provide that are better suited for subsequent follow-up studies, including mass measurement through radial velocity (RV) observations, compared Kepler targets. In this work, we present TESS-Keck Survey’s (TKS) Mass Catalog: a uniform analysis all TKS RV...
view Abstract Citations (86) References (53) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The C/H ratio in Jupiter from the Voyager infrared investigation Gautier, D. ; Bezard, B. Marten, A. Baluteau, J. P. Scott, N. Chedin, Kunde, V. Hanel, R. From a selection IRIS spectra corresponding to cloud-free areas of Jupiter, CH4/H2 volume atmosphere this planet has been determined be equal 0.00195 + or - 0.00022, which corresponds 2.07 0.24 times solar value...
We report the discovery and characterization of two transiting planets around bright M1 V star LP 961-53 (TOI-776, J = 8.5 mag, M 0.54+-0.03 Msun) detected during Sector 10 observations Transiting Exoplanet Survey Satellite (TESS). Combining TESS photometry with HARPS radial velocities, as well ground-based follow-up transit from MEarth LCOGT telescopes, we measured for inner planet, TOI-776 b, a period 8.25 d, radius 1.85+-0.13 Re, mass 4.0+-0.9 Me; outer c, 15.66 2.02+-0.14 5.3+-1.8 Me....
We report the discovery of two planetary systems around comoving stars; TOI-2076 (TIC 27491137) and TOI-1807 180695581). is a nearby (41.9 pc) multi-planetary system orbiting young (204$\pm$50 Myr), bright (K = 7.115 in TIC v8.1). hosts single transiting planet, similarly (42.58pc), (180$\pm$40 bright. Both targets exhibit significant, periodic variability due to star spots, characteristic their ages. Using photometric data collected by TESS we identify three planets with radii...
Large sub-Neptunes are uncommon around the coolest stars in Galaxy and rarer still those that metal-poor. However, owing to large planet-to-star radius ratio, these planets highly suitable for atmospheric study via transmission spectroscopy infrared, such as with JWST. Here we report discovery validation of a sub-Neptune orbiting thick-disk, mid-M dwarf star TOI-2406. We first infer properties host by analysing star's near-infrared spectrum, spectral energy distribution, Gaia parallax. use...
Several planetary formation models have been proposed to explain the observed abundance and variety of compositions super-Earths mini-Neptunes. In this context, multitransiting systems orbiting low-mass stars whose planets are close radius valley benchmark systems, which help elucidate model dominates. We report discovery, validation, initial characterization one such system, TOI-2096, composed a super-Earth mini-Neptune hosted by mid-type M dwarf located 48 pc away. first characterized host...
Laser nerve stimulation has recently been studied in neuroscience as an alternative to electrical stimulation. Its advantages include noncontact stimulation, better spatial selectivity, and elimination of artifacts. This study explored laser the rat cavernous nerves a potential mapping during nerve-sparing radical prostatectomy.The were surgically exposed 10 male rats. A thulium fiber stimulated nerves, with wavelength 1870 nm, pulse energy 7.5 mJ, radiant exposure 1 J/cm2, duration 2.5...
Transiting exoplanets in young open clusters present opportunities to study how evolve over their lifetimes. Recently, significant progress detecting transiting planets has been made with the K2 mission, but so far all of these cluster orbit close host stars, planet evolution can only be studied a high-irradiation regime. Here, we report discovery long-period candidate, called HD 283869 b, orbiting member Hyades cluster. Using data from detected single transit super-Earth-sized (1.96 +/-...
We present the discoveries of KELT-25b (TIC 65412605, TOI-626.01) and KELT-26b 160708862, TOI-1337.01), two transiting companions orbiting relatively bright, early A-stars. The transit signals were initially detected by KELT survey, subsequently confirmed \textit{TESS} photometry. is on a 4.40-day orbit around V = 9.66 star CD-24 5016 ($T_{\rm eff} 8280^{+440}_{-180}$ K, $M_{\star}$ $2.18^{+0.12}_{-0.11}$ $M_{\odot}$), while 3.34-day 9.95 HD 134004 eff}$ =$8640^{+500}_{-240}$...