A5035792525- Astro and Planetary Science
- Atmospheric Ozone and Climate
- Stellar, planetary, and galactic studies
- Space Exploration and Technology
- Isotope Analysis in Ecology
- Astronomy and Astrophysical Research
- SAS software applications and methods
- Atmospheric and Environmental Gas Dynamics
- Target Tracking and Data Fusion in Sensor Networks
- Ocean Acidification Effects and Responses
- Marine animal studies overview
- Cephalopods and Marine Biology
- Spaceflight effects on biology
- Planetary Science and Exploration
- Marine and coastal ecosystems
- Cardiovascular and Diving-Related Complications
- Advanced Computational Techniques and Applications
- Quality Function Deployment in Product Design
Goddard Space Flight Center
2021-2024
University of Maryland, College Park
2022-2024
NASA Exoplanet Science Institute
2021-2023
Johns Hopkins University
2023
Southeastern Universities Research Association
2021-2022
Abstract The era of atmospheric characterization terrestrial exoplanets is just around the corner. Modeling prior to observations crucial in order predict observational challenges and prepare for data interpretation. This paper presents report TRAPPIST Habitable Atmosphere Intercomparison workshop (2020 September 14–16). A review climate models parameterizations processes on exoplanets, model advancements, limitations, as well direction future development, was discussed. We hope that this...
We present the discovery of an Earth-mass planet ( M b sin i = 1.26 ± 0.21 ⊕ ) on a 15.6 d orbit relatively nearby ~ 9.6 pc) and low-mass (0.167 0.011 ⊙ M5.0 V star, Wolf 1069. Sitting at separation 0.0672 0.0014 au away from host star puts 1069 in habitable zone (HZ), receiving incident flux S 0.652 0.029 . The planetary signal was detected using telluric-corrected radial-velocity (RV) data CARMENES spectrograph, amounting to total 262 spectroscopic observations covering almost four years....
Nitrous oxide (N2O) -- a product of microbial nitrogen metabolism is compelling exoplanet biosignature gas with distinctive spectral features in the near- and mid-infrared, only minor abiotic sources on Earth. Previous investigations N2O as have examined scenarios using Earthlike mixing ratios or surface fluxes, those inferred from Earth's geologic record. However, biological fluxes could be substantially higher, due to lack metal catalysts if last step denitrification that yields N2 had...
Abstract Exoplanet characterization missions planned for the future will soon enable searches life beyond our solar system. Critical to search be development of detection strategies that can biosignatures while maintaining observational efficiency. In this work, we adopted a newly developed biosignature decision tree strategy remote Earthlike exoplanets. The offers step-by-step roadmap detecting exoplanet and excluding false positives, based on Earth’s biosphere its evolution over time. We...
Abstract We present the results for detectability of O 2 and 3 molecular species in atmosphere an Earth-like planet using reflected light at visible wavelengths. By quantifying as a function signal-to-noise ratio (S/N), we can constrain best methods to detect these biosignatures with next-generation telescopes designed high-contrast coronagraphy. Using 25 bandpasses between 0.515 1 μ m preconstructed grid geometric albedo spectra, examined spectral sensitivity needed range abundances. first...
We present the results for detectability of O2 and O3 molecular species in atmosphere an Earth-like planet using reflected light at visible wavelengths. By quantifying as a function signal-to-noise ration (SNR), we can constrain best methods to detect these biosignatures with nest-generation telescopes designed high-contrast coronagraph. Using 25 bandpasses between 0.515 1 micron, pre-constructed grid geometric albedo spectra, examined spectral sensitivity needed range abundances. first...
The era of atmospheric characterization terrestrial exoplanets is just around the corner. Modeling prior to observations crucial in order predict observational challenges and prepare for data interpretation. This paper presents report TRAPPIST Habitable Atmosphere Intercomparison (THAI) workshop (14-16 September 2020). A review climate models parameterizations processes on exoplanets, model advancements limitations, as well direction future development was discussed. We hope that this will...
Exoplanet characterization missions planned for the future will soon enable searches life beyond our solar system. Critical to search be development of detection strategies that can biosignatures while maintaining observational efficiency. In this work, we adopted a newly developed biosignature decision tree strategy remote Earth-like exoplanets. The offers step-by-step roadmap detecting exoplanet and excluding false positives based on Earth's biosphere its evolution over time. We followed...