Stephen A. Rinehart
A5064960277- Stellar, planetary, and galactic studies
- Astronomy and Astrophysical Research
- Astrophysics and Star Formation Studies
- Adaptive optics and wavefront sensing
- Superconducting and THz Device Technology
- Astro and Planetary Science
- Calibration and Measurement Techniques
- Radio Astronomy Observations and Technology
- Astronomical Observations and Instrumentation
- Spectroscopy and Laser Applications
- Laser-induced spectroscopy and plasma
- Spacecraft and Cryogenic Technologies
- Spacecraft Design and Technology
- Advanced Measurement and Metrology Techniques
- Space Exploration and Technology
- Optical Polarization and Ellipsometry
- Atmospheric Ozone and Climate
- Photonic and Optical Devices
- Inertial Sensor and Navigation
- Planetary Science and Exploration
- Gamma-ray bursts and supernovae
- Optical measurement and interference techniques
- Infrared Target Detection Methodologies
- Aerospace Engineering and Energy Systems
- Atmospheric aerosols and clouds
Goddard Space Flight Center
2012-2021
NASA Planetary Science
2020-2021
Planetary Science Institute
2020-2021
San Diego State University
2017-2018
University of California, Davis
2017-2018
Massachusetts Institute of Technology
2014
Leiden University
2004
Leiden Observatory
2004
National Academies of Sciences, Engineering, and Medicine
2003
Queen Mary University of London
1999-2002
The Transiting Exoplanet Survey Satellite (TESS) will search for planets transiting bright and nearby stars. TESS has been selected by NASA launch in 2017 as an Astrophysics Explorer mission. spacecraft be placed into a highly elliptical 13.7-day orbit around the Earth. During its two-year mission, employ four wide-field optical CCD cameras to monitor at least 200,000 main-sequence dwarf stars with I = 4-13 temporary drops brightness caused planetary transits. Each star observed interval...
The Transiting Exoplanet Survey Satellite (TESS ) will search for planets transiting bright and nearby stars. TESS has been selected by NASA launch in 2017 as an Astrophysics Explorer mission. spacecraft be placed into a highly elliptical 13.7-day orbit around the Earth. During its two-year mission, employ four wide-field optical CCD cameras to monitor at least 200,000 main-sequence dwarf stars with I<sub>C</sub> (approximately less than) 13 temporary drops brightness caused planetary...
The Transiting Exoplanet Survey Satellite (TESS) will conduct a search for Earth's closest cousins starting in early 2018 and is expected to discover ∼1,000 small planets with R<sub>p</sub> < 4 R<sub>⊕</sub> measure the masses of at least 50 these worlds. Science Processing Operations Center (SPOC) being developed NASA Ames Research based on Kepler science pipeline generate calibrated pixels light curves Advanced Supercomputing Division's Pleiades supercomputer. SPOC also...
We present 2,241 exoplanet candidates identified with data from the Transiting Exoplanet Survey Satellite (TESS) during its two-year prime mission. list these in TESS Objects of Interest (TOI) Catalog, which includes both new planet found by and previously-known planets recovered observations. describe process used to identify TOIs investigate characteristics candidates, discuss some notable discoveries. The TOI Catalog an unprecedented number small around nearby bright stars, are...
Data from the newly-commissioned \textit{Transiting Exoplanet Survey Satellite} (TESS) has revealed a "hot Earth" around LHS 3844, an M dwarf located 15 pc away. The planet radius of $1.32\pm 0.02$ $R_\oplus$ and orbits star every 11 hours. Although existence atmosphere such strongly irradiated is questionable, bright enough ($I=11.9$, $K=9.1$) for this possibility to be investigated with transit occultation spectroscopy. star's brightness planet's short period will also facilitate...
Abstract We report the detection of a transiting planet around π Men (HD 39091), using data from Transiting Exoplanet Survey Satellite ( TESS ). The solar-type host star is unusually bright V = 5.7) and was already known to Jovian on highly eccentric, 5.7 yr orbit. newly discovered has size 2.04 ± 0.05 R ⊕ an orbital period 6.27 days. Radial-velocity High-Accuracy Planet Searcher Anglo-Australian Telescope/University College London Echelle Spectrograph archives also displays day periodicity,...
Abstract We present the discovery and validation of a three-planet system orbiting nearby (31.1 pc) M2 dwarf star TOI-700 (TIC 150428135). lies in TESS continuous viewing zone Southern Ecliptic Hemisphere; observations spanning 11 sectors reveal three planets with radii ranging from 1 R ⊕ to 2.6 orbital periods 9.98 37.43 days. Ground-based follow-up combined diagnostic vetting tests enables us rule out common astrophysical false-positive scenarios validate planets. The outermost planet, d,...
The Transiting Exoplanet Survey Satellite (TESS) will discover thousands of exoplanets in orbit around the brightest stars sky. This first-ever spaceborne all-sky transit survey identify planets ranging from Earth-sized to gas giants. TESS be far brighter than those surveyed by previous missions; thus, easier characterize follow-up observations. For first time it possible study masses, sizes, densities, orbits, and atmospheres a large cohort small planets, including sample rocky worlds...
Far-infrared astronomy has advanced rapidly since its inception in the late 1950's, driven by a maturing technology base and an expanding community of researchers. This advancement shown that observations at far-infrared wavelengths are important nearly all areas astrophysics, from search for habitable planets origin life, to earliest stages galaxy assembly first few hundred million years cosmic history. The combination still developing portfolio technologies, particularly field detectors,...
We report the Transiting Exoplanet Survey Satellite (TESS) discovery of three terrestrial-sized planets transiting L 98-59 (TOI-175, TIC 307210830) -- a bright M dwarf at distance 10.6 pc. Using Gaia-measured and broad-band photometry we find that host star is an M3 dwarf. Combined with TESS transits from sectors, corresponding stellar parameters yield planet radii ranging 0.8REarth to 1.6REarth. All have short orbital periods, 2.25 7.45 days outer pair just wide 2:1 period resonance....
We analyze the phase curve of short-period transiting hot Jupiter system WASP-19, which was observed by Transiting Exoplanet Survey Satellite ($TESS$) in Sector 9. WASP-19 is one only five exoplanet systems with full-orbit measurements at both optical and infrared wavelengths. measure a secondary eclipse depth $470^{+130}_{-110}$ ppm detect strong atmospheric brightness modulation signal semi-amplitude $319\pm51$ ppm. No significant offset detected between substellar point region maximum on...
We study the red-optical photometry of ultra-hot Jupiter WASP-121 b as observed by Transiting Exoplanet Survey Satellite (TESS) and model its atmosphere through a radiative transfer simulation. Given short orbital period $\sim1.275$ days, inflated state bright host star, is exceptionally favorable for detailed atmospheric characterization. Towards this purpose, we use \texttt{allesfitter} to characterize full phase curve, including planetary modulation secondary eclipse. measure day...
The Neptune desert is a feature seen in the radius-mass-period plane, whereby notable dearth of short period, Neptune-like planets found. Here we report {\it TESS} discovery new short-period planet desert, orbiting G-type dwarf TYC\,8003-1117-1 (TOI-132). photometry shows transit-like dips at level $\sim$1400 ppm occurring every $\sim$2.11 days. High-precision radial velocity follow-up with HARPS confirmed planetary nature transit signal and provided semi-amplitude variation $\sim$11.5 m...
The exoplanet HD 118203 b, orbiting a bright (V = 8.05) host star, was discovered using the radial velocity method by da Silva et al. (2006), but not previously known to transit. TESS photometry has revealed that this planet transits its star. Five planetary were observed TESS, allowing us measure radius of be $1.133 \pm 0.031 R_J$, and calculate mass $2.173 0.078 M_J$. star is slightly evolved with an effective temperature $T_{\rm eff} 5692 83$ K surface gravity ${\rm log}(g) 3.891 0.019$....
ABSTRACT Inspired by the recent Kepler discoveries of circumbinary planets orbiting nine close binary stars, we explore fate former as latter evolve off main sequence. We combine star evolution models with dynamical simulations to study orbital these their hosts undergo common-envelope (CE) stages, losing in process a tremendous amount mass on timescales. Five systems experience at least one Roche-lobe overflow and CE stage (Kepler-1647 experiences three), stars either shrink very short...
We report the discovery of TOI 263.01 (TIC 120916706), a transiting substellar object (R = 0.87 RJup) orbiting faint M3.5~V dwarf (V=18.97) on 0.56~d orbit. set out to determine nature TESS planet candidate using ground-based multicolour transit photometry. The host star is faint, which makes RV confirmation challenging, but large depth suitable for validation through Our analysis combines three transits observed simultaneously in r', i', and z_s bands MuSCAT2 imager, LCOGT-observed light...
Recent studies, which are the impetus for this paper, have investigated possibility of astronomical wide-field double-Fourier interferometry at submillimeter and midinfrared wavelengths. Double-Fourier combines Michelson Fourier transform spectroscopy. At present time, it is only technique that promises simultaneous high spatial spectral resolution. First, we derive near-general output response interferometers using Jones Mueller calculi. We employ a "systems" approach, expressing instrument...
We report the discovery and validation of TOI 122b 237b, two warm planets transiting inactive M dwarfs observed by \textit{TESS}. Our analysis shows has a radius 2.72$\pm$0.18 R$_\rm{e}$ receives 8.8$\pm$1.0$\times$ Earth's bolometric insolation, 237b 1.44$\pm$0.12 3.7$\pm$0.5$\times$ Earth straddling 6.7$\times$ insolation that Mercury from sun. This makes these cooler yet discovered \textit{TESS}, even on their 5.08-day 5.43-day orbits. Together, they span small-planet valley, providing...
The Wide-field Imaging Interferometry Testbed was designed to validate, experiment with, and refine the technique of wide field mosaic imaging for optical/IR interferometers. We offer motivation WIIT, present testbed design, describe algorithms that can be used reduce data from a spatial spectral Michelson interferometer. A conventional single-detector interferometer operating with narrow bandwidth at center wavelength lc is limited in its view primary beam individual telescope apertures, or...
A compact cryogenic calibration target is presented that has a peak diffuse reflectance, R ⩽ 0.003, from 800 to 4800 cm(-1) (12 - 2 μm). Upon expanding the spectral range under consideration 400-10,000 (25 1 μm) observed performance gracefully degrades 0.02 at band edges. In implementation described, high-thermal-conductivity metallic substrate textured with pyramidal tiling and subsequently coated thin lossy dielectric coating enables high absorption thermal uniformity across target. The...
This study is concerned with the free-vibration characteristics of thin cylindrical shells reinforced by longitudinal stringers for any edge boundary conditions. The structural system treated as an isotropic cylinder interacting a set discrete thin-walled stringers. Frequencies simply supported obtained according to present analysis compare favorably Ritz solution and existing experimental data. For mode shapes, often yields much better results than solution. Numerical frequencies shapes...