Susan E. Mullally
A5036251310- Stellar, planetary, and galactic studies
- Astronomy and Astrophysical Research
- Astro and Planetary Science
- Astronomical Observations and Instrumentation
- Gamma-ray bursts and supernovae
- Astrophysics and Star Formation Studies
- History and Developments in Astronomy
- Space Exploration and Technology
- Adaptive optics and wavefront sensing
- Astrophysical Phenomena and Observations
- Solar and Space Plasma Dynamics
- Galaxies: Formation, Evolution, Phenomena
- Scientific Research and Discoveries
- Pulsars and Gravitational Waves Research
- SAS software applications and methods
- Space Science and Extraterrestrial Life
- Image Processing and 3D Reconstruction
- Calibration and Measurement Techniques
- CCD and CMOS Imaging Sensors
- Atmospheric Ozone and Climate
- Scientific Computing and Data Management
- Spacecraft Design and Technology
- Distributed and Parallel Computing Systems
- Astronomical and nuclear sciences
- Historical Astronomy and Related Studies
Space Telescope Science Institute
2018-2024
Lawrence Livermore National Laboratory
2024
Goddard Space Flight Center
2024
Cornell University
2022
Bishop's University
2022
American Institute of Aeronautics and Astronautics
2020
Search for Extraterrestrial Intelligence
2011-2017
Large Synoptic Survey Telescope Corporation
2015
Ames Research Center
2011-2014
Princeton University
2008-2011
We describe the catalogs assembled and algorithms used to populate revised TESS Input Catalog (TIC), based on incorporation of Gaia second data release. also a ranking system for prioritizing stars 2-minute cadence observations, assemble Candidate Target List (CTL) using that ranking. The TIC is available Mikulski Archive Space Telescopes (MAST) server, an enhanced CTL through Filtergraph visualization portal at URL http://filtergraph.vanderbilt.edu/tess_ctl.
We report the distribution of planets as a function planet radius (R_p), orbital period (P), and stellar effective temperature (Teff) for P < 50 day orbits around GK stars. These results are based on 1,235 (formally "planet candidates") from Kepler mission that include nearly complete set detected small 2 Earth radii (Re). For each 156,000 target stars we assess detectability R_p P. also correct geometric probability transit, R*/a. consider first within "solar subset" having Teff = 4100-6100...
The Kepler Mission provides nearly continuous monitoring of ~156 000 objects with unprecedented photometric precision. Coincident the first data release, we presented a catalog 1879 eclipsing binary systems identified within 115 square degree FOV. Here, provide an updated augmented second release which increases baseline 4-fold to 125 days. 386 new have been added, ephemerides and principle parameters recomputed. We removed 42 previously cataloged that are now clearly recognized as...
Rotation is expected to have an important influence on the structure and evolution of stars. However, mechanisms angular momentum transport in stars remain theoretically uncertain very complex take into account stellar models. To achieve a better understanding these processes, we desperately need observational constraints internal rotation stars, which until recently were restricted Sun. In this paper, report detection mixed modes - i.e. that behave both as g core p envelope spectrum early...
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...
A search of the time-series photometry from NASA's Kepler spacecraft reveals a transiting planet candidate orbiting 11th magnitude G5 dwarf KIC 10593626 with period 290 days. The characteristics host star are well constrained by high-resolution spectroscopy combined an asteroseismic analysis photometry, leading to estimated mass and radius 0.970 ± 0.060 M☉ 0.979 0.020 R☉. depth 492 10 ppm for three observed transits yields 2.38 0.13 Re planet. system passes battery tests false positives,...
Abstract The James Webb Space Telescope (JWST) Early Release Observations (EROs) is a set of public outreach products created to mark the end commissioning and beginning science operations for JWST. Colloquially known as “Webb First Images Spectra,” these were intended demonstrate worldwide that JWST ready science, capable producing spectacular results. package was released on 2022 July 12 included images spectra galaxy cluster SMACS J0723.3-7327 distant lensed galaxies, interacting group...
Abstract It is critical for James Webb Space Telescope (JWST) science that instrumental units are converted to physical units. We detail the design of JWST absolute flux calibration program has core goal ensuring a robust internal and between all instruments both point extended source science. This will observe sample stars have been extensively vetted based mainly on Hubble Telescope, Spitzer Transiting Exoplanet Survey Satellite observations. The uses multiple three different,...
Abstract Study Analysis Group 21 (SAG21) of NASA’s Exoplanet Exploration Program was organized to study the effect stellar contamination on space-based transmission spectroscopy, a method for studying exoplanetary atmospheres by measuring wavelength-dependent radius planet as it transits its star. Transmission spectroscopy relies precise understanding spectrum star being occulted. However, stars are not homogeneous, constant light sources but have temporally evolving photospheres and...
The granulation pattern that we observe on the surface of Sun is due to hot plasma from interior rising photosphere where it cools down, and descends back into at edges granules. This visible manifestation convection taking place in outer part solar zone. Because red giants have deeper zones more extended atmospheres than Sun, cannot a priori assume scaled version granulation. Until now, neither observations nor 1D analytical models could put constraints giants. However, thanks...
We present a method to confirm the planetary nature of objects in systems with multiple transiting exoplanet candidates. This involves Fourier-Domain analysis deviations transit times from constant period that result dynamical interactions within system. The combination observed anti-correlations and mass constraints stability allow us claim discovery four Kepler-25, Kepler-26, Kepler-27, Kepler-28, containing eight planets one additional planet candidate.
We have discovered a class of eccentric binary systems within the Kepler data archive that dynamic tidal distortions and tidally induced pulsations. Each has uniquely shaped light curve is characterized by periodic brightening or variability at timescales 4–20 days, frequently accompanied shorter period oscillations. can explain dominant features entire with orbitally varying forces occur in close, systems. The large variety shapes arises from viewing different angles. This hypothesis...
The Large Synoptic Survey Telescope (LSST) is a large-aperture, wide-field, ground-based survey system that will image the sky in six optical bands from 320 to 1050 nm, uniformly covering approximately $18,000$deg$^2$ of over 800 times. LSST currently under construction on Cerro Pachón Chile, and expected enter operations 2022. Once operational, explore wide range astrophysical questions, discovering "killer" asteroids examining nature Dark Energy. generate average 15 TB data per night,...
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,...
Exoplanet catalogs produced by surveys suffer from a lack of completeness (not every planet is detected) and less than perfect reliability in the catalog true planet), particularly near survey's detection limit. occurrence rate studies based on such must be corrected for reliability. The final Kepler data release, DR25, features uniformly vetted candidate products that facilitate corrections. We present new probabilistic approach to characterization reliability, making full use DR25...
We report on precise Doppler measurements of L231-32 (TOI-270), a nearby M dwarf ($d=22$ pc, $M_\star = 0.39$ M$_\odot$, $R_\star 0.38$ R$_\odot$), which hosts three transiting planets that were recently discovered using data from the Transiting Exoplanet Survey Satellite (TESS). The are 1.2, 2.4, and 2.1 times size Earth have orbital periods 3.4, 5.7, 11.4 days. obtained 29 high-resolution optical spectra with newly commissioned Echelle Spectrograph for Rocky Stable Spectroscopic...
Abstract We present James Webb Space Telescope (JWST) and Hubble (HST) observations of the afterglow GRB 221009A, brightest gamma-ray burst (GRB) ever observed. This includes first mid-IR spectra any GRB, obtained with JWST/Near Infrared Spectrograph (0.6–5.5 micron) Mid-Infrared Instrument (5–12 micron), 12 days after burst. Assuming that intrinsic spectral slope is a single power law, F ν ∝ − β , we obtain ≈ 0.35, modified by substantial dust extinction A V = 4.9. suggests above notional...
Abstract We report the discovery of two directly imaged, giant planet candidates orbiting metal-rich, hydrogen atmosphere white dwarfs WD 1202−232 and 2105−82. JWST’s Mid-Infrared Instrument (MIRI) data on these stars show a nearby resolved source at projected separation 11.47 34.62 au, respectively. Assuming planets formed same time as their host stars, with total ages 5.3 1.6 Gyr, MIRI photometry is consistent masses ≈1–7 M Jup . The probability both being false positives due to red...
We present limits on planetary companions to pulsating white dwarf stars. A subset of these stars exhibit extreme stability in the period and phase some their pulsation modes; a planet can be detected around such star by searching for periodic variations arrival time pulsations. greater than few Jupiter masses sample 15 as part an ongoing survey. One shows variation consistent with 2MJ 4.5 yr orbit. discuss other possible explanations observed signal conclude that is most plausible...
Context. It was recently discovered that the period spacings of mixed pressure/gravity dipole modes in red giants permit a distinction between otherwise unknown evolutionary stage these stars. The Kepler space mission is reaching continuous observing times long enough to also start studying fine structure observed pressure-mode spectra.
The architectures of multiple planet systems can provide valuable constraints on models formation, including orbital migration, and excitation eccentricities inclinations. NASA's Kepler mission has identified 1235 transiting candidates (Borcuki et al 2011). method transit timing variations (TTVs) already confirmed 7 planets in two planetary (Holman al. 2010; Lissauer 2011a). We perform a analysis the candidates. find that at least ~12% currently suitable for TTV show evidence suggestive...
We present a new method for confirming transiting planets based on the combination of transit timingn variations (TTVs) and dynamical stability. Correlated TTVs provide evidence that pair bodies are in same physical system. Orbital stability provides upper limits masses companions planetary regime. This paper describes non-parametric technique quantifying statistical significance correlation two TTV data sets. apply this to an analysis timing stars with multiple planet candidates identified...
Nineteen of the ~40 RR Lyr stars in Kepler field have been identified as candidate non-Blazhko (or unmodulated) stars. In this paper we present results Fourier decomposition time-series photometry these acquired during first 417 days operation (Q0-Q5) telescope. parameters based on ~18400 long-cadence observations per star (and ~150000 short-cadence for FN and AW Dra) are derived. None shows recently discovered `period-doubling' effect seen Blazhko variables; however, KIC 7021124 has found...
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....