Emily A. Gilbert
A5037942172- Stellar, planetary, and galactic studies
- Astronomy and Astrophysical Research
- Astro and Planetary Science
- Astrophysics and Star Formation Studies
- Gamma-ray bursts and supernovae
- Astronomical Observations and Instrumentation
- Atmospheric Ozone and Climate
- Forest Ecology and Conservation
- Animal Vocal Communication and Behavior
- Solar and Space Plasma Dynamics
- Noise Effects and Management
- Geophysics and Gravity Measurements
- Oil Palm Production and Sustainability
- Adaptive optics and wavefront sensing
- Medicinal Plant Research
- Marine animal studies overview
- Forest ecology and management
- Spectroscopy and Laser Applications
- Space Exploration and Technology
- Wildlife-Road Interactions and Conservation
- Technology Assessment and Management
- Scientific Research and Discoveries
- Advanced X-ray Imaging Techniques
- Spacecraft Design and Technology
- Avian ecology and behavior
Jet Propulsion Laboratory
2023-2025
University of Nebraska Medical Center
2024
University of Chicago
2019-2023
Universiti of Malaysia Sabah
2017-2023
Adler Planetarium
2020-2022
Goddard Space Flight Center
2014-2022
University of Maryland, Baltimore County
2020-2022
Deleted Institution
2022
University of Maryland, Baltimore
2021
University of Baltimore
2021
Foreman-Mackey et al., (2021). exoplanet: Gradient-based probabilistic inference for exoplanet data & other astronomical time series. Journal of Open Source Software, 6(62), 3285, https://doi.org/10.21105/joss.03285
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...
We present Hubble Space Telescope (HST) Wide Field Camera 3 (WFC3) observations of the source and lens stars for planetary microlensing event OGLE-2005-BLG-169, which confirm relative proper motion prediction due to light curve signal observed this event. This (and companion Keck result) provide first confirmation a signal, deviation was only 2%. The follow-up determine flux host star in multiple passbands remove model ambiguity caused by sparse sampling part curve. leads precise...
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,...
We report the detection of first circumbinary planet found by TESS. The target, a known eclipsing binary, was observed in sectors 1 through 12 at 30-minute cadence and 4 two-minute cadence. It consists two stars with masses 1.1 MSun 0.3 on slightly eccentric (0.16), 14.6-day orbit, producing prominent primary eclipses shallow secondary eclipses. has radius ~6.9 REarth to make three transits across star roughly equal depths (~0.2%) but different durations -- common signature transiting...
We present updated radial-velocity (RV) analyses of the AU Mic system. is a young (22 Myr) early M dwarf known to host two transiting planets - $P_{b}\sim8.46$ days, $R_{b}=4.38_{-0.18}^{+0.18}\ R_{\oplus}$, $P_{c}\sim18.86$ $R_{c}=3.51_{-0.16}^{+0.16}\ R_{\oplus}$. With visible RVs from CARMENES-VIS, CHIRON, HARPS, HIRES, {\sc {\textsc{Minerva}}}-Australis, and TRES, as well near-infrared (NIR) CARMENES-NIR, CSHELL, IRD, iSHELL, NIRSPEC, SPIRou, we provide $5\sigma$ upper limit mass c...
Abstract AU Mic is a young (∼24 Myr), pre-main-sequence M dwarf star that was observed in the first month of science observations Transiting Exoplanet Survey Satellite (TESS) and reobserved 2 years later. This target has photometric variability from variety sources readily apparent TESS light curves; spots induce modulation curve, flares are present throughout (manifesting as sharp rises with slow exponential decay phases), transits b may be seen by eye dips curve. We combined analysis both...
Abstract JWST has ushered in an era of unprecedented ability to characterize exoplanetary atmospheres. While there are over 5000 confirmed planets, more than 4000 Transiting Exoplanet Survey Satellite (TESS) planet candidates still unconfirmed and many the best planets for atmospheric characterization may remain be identified. We present a sample TESS that we identify as “best-in-class” transmission emission spectroscopy with JWST. These targets sorted into bins across equilibrium...
We report the first discovery of a transiting circumbinary planet detected from single sector TESS data. During Sector 21, TIC 172900988b transited primary star and then 5 days later it secondary star. The binary is itself eclipsing, with period P = 19.7 an eccentricity e 0.45. Archival data ASAS-SN, Evryscope, KELT, SuperWASP reveal prominent apsidal motion orbit, caused by dynamical interactions between planet. A comprehensive photodynamical analysis TESS, archival follow-up yields stellar...
Abstract Transmission spectroscopy of transiting exoplanets is a proven technique that can yield information on the composition and structure planet’s atmosphere. However, transmission spectra may be compromised by inhomogeneities in stellar photosphere. The sub-Neptune-sized habitable zone planet K2-18b has water absorption detected its atmosphere using data from Hubble Space Telescope (HST). Herein, we examine whether reported planetary atmospheric signal seen HST could instead induced...
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...
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Abstract We present a comprehensive multiwavelength investigation into flares and activity in nearby M dwarf stars. leverage the most extensive contemporaneous data set obtained through Transiting Exoplanet Sky Survey, Kepler/K2, Neil Gehrels Swift Observatory, Hubble Space Telescope, spanning optical near-ultraviolet (NUV) regimes. In total, we observed 213 NUV on 24 dwarfs, with ∼27% of them having detected counterparts, found that all had counterparts. explore NUV/optical energy...
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 report the discovery of TOI-700 e, a 0.95 R$_\oplus$ planet residing in Optimistic Habitable Zone (HZ) its host star. This was enabled by multiple years monitoring from NASA's Transiting Exoplanet Survey Satellite (TESS) mission. The star, (TIC 150428135), is nearby (31.1 pc), inactive, M2.5 dwarf ($V_{mag} = 13.15$). already known to three planets, including small, HZ planet, d. new has an orbital period 27.8 days and, based on radius (0.95 R$_\oplus$), it likely rocky. observed for 21...
We present $Spitzer$ 4.5$\mu$m observations of the transit TOI-700 d, a habitable zone Earth-sized planet in multiplanet system transiting nearby M-dwarf star (TIC 150428135, 2MASS J06282325-6534456). d has radius $1.144^{+0.062}_{-0.061}R_\oplus$ and orbits within its host star's conservative with period 37.42 days ($T_\mathrm{eq} \sim 269$K). also hosts two small inner planets (R$_b$=$1.037^{+0.065}_{-0.064}R_\oplus$ & R$_c$=$2.65^{+0.16}_{-0.15}R_\oplus$) periods 9.98 16.05 days,...
We present self-consistent three-dimensional climate simulations of possible habitable states for the newly discovered Habitable Zone Earth-sized planet, TOI-700 d. explore a variety atmospheric compositions, pressures, and rotation both ocean-covered completely desiccated planets in order to assess planet's potential habitability. For all 20 our simulated cases, we use model outputs synthesize transmission spectra, combined-light integrated broadband phase curves. These...
Abstract We present the first results of our ongoing project conducting simultaneous multiwavelength observations flares on nearby active M dwarfs. acquired data dM3.5e star EV Lac using five different observatories: NASA’s Transiting Exoplanet Survey Satellite (TESS), Neil Gehrels Swift Observatory (Swift), Neutron Interior Composition Explorer (NICER), University Hawaii 2.2-meter telescope (UH88), and Las Cumbres Global Telescope (LCOGT) Network. During ∼25 days TESS observations, we three...
Abstract A critically important process affecting the climate evolution and potential habitability of an exoplanet is atmospheric escape, in which high-energy radiation from a star drives escape hydrogen atoms other light elements planet’s atmosphere. L 98-59 benchmark system for studying such processes, with three transiting terrestrial-sized planets receiving Venus-like instellations (4–25 S ⊕ ) their M3 host star. We use VPLanet model to simulate its inner small planets, given different...
We report the discovery and characterisation of a giant transiting planet orbiting nearby M3.5V dwarf ( d = 80.4pc, G 15.1 mag, K =11.2mag, R * 0.358 ± 0.015 ⊙ , M 0.340 0.009 ). Using photometric time series from TESS sectors 10, 36, 46, 63 near-infrared spectrophotometry ExTrA, we measured planetary radius 0.77 0.03 J an orbital period 1.52 days. With high-resolution spectroscopy taken by CFHT/SPIRou ESO/ESPRESSO spectrographs, refined host star parameters ([Fe/H] 0.27 0.12) mass (0.273...
We present an optical-to-infrared transmission spectrum of the inflated sub-Saturn KELT-11b measured with Transiting Exoplanet Survey Satellite (TESS), Hubble Space Telescope (HST) Wide Field Camera 3 G141 spectroscopic grism, and Spitzer (Spitzer) at 3.6 $\mu$m, in addition to a 4.5 $\mu$m secondary eclipse. The precise HST notably reveals low-amplitude water feature unusual shape. Based on free retrieval analyses varying molecular abundances, we find strong evidence for absorption....
The NASA K2 mission, salvaged from the hardware failures of Kepler telescope, has continued Kepler's planet-hunting success. It revealed nearly 500 transiting planets around ecliptic plane, many which are subject further study, and over 1000 additional candidates. Here we present results an ongoing project to follow-up statistically validate new planets, in particular identify promising targets for characterization. By analyzing reconnaissance spectra, high-resolution imaging, centroid...
The James Webb Space Telescope (JWST) will be able to probe the atmospheres and surface properties of hot, terrestrial planets via emission spectroscopy. We identify 18 potentially planet candidates detected by Transiting Exoplanet Survey Satellite (TESS) that would make ideal targets for these observations. These cover a broad range radii ($R_{\rm p} \sim 0.6 - 2.0 R_\oplus$) orbit stars various magnitudes ($K_s = 5.78 10.78$, $V 8.4 15.69$) effective temperatures ($T_{\rm eff }\sim 3000...
Planets with orbital periods shorter than 1 day are rare and have formation histories that not completely understood. Small ( R p < 2 ⊕ ) ultra-short-period (USP) planets highly irradiated, probably rocky compositions high bulk densities, often found in multi-planet systems. Additionally, USP around small stars excellent candidates for characterization using present-day instrumentation. Of the current full sample of approximately 5500 confirmed exoplanets, only 130 40 mass radius...