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Poster Session: Exoplanets: Observations and Modeling

Tuesday, March 14, 2023, 6:30 PM
Town Hall Exhibit Area

Trierweiler I. L.* Doyle A. E. Melis C. Young E. D.
A Chondritic Solar Neighborhood [#2769]
We show that the majority of white dwarf polluters as well as stars from the Hypatia Catalog are consistent with chondritic composition.
Futó P.* Gucsik A.
Implications for the Bulk Elemental Composition of Terrestrial Planets I. The Stellar and Planetary S/Fe Molar Ratio [#1070]
Our analysis shows that more than the half of the examined G-type stars have S/Fe ratios ranging from 0.4 to 0.6, which are similar to the solar S/Fe abundances.
Futó P.* Gucsik A.
Implications for the Bulk Elemental Composition of Terrestrial Planets II. The Effect of the Variations of C/Si Ratio on the Bulk Mineralogy of Rocky Planets [#1072]
According to the results of our statistical analysis a dominant fraction of C-rich planetary systems have higher C/Si ratios relative to the solar C/Si ratio.
Cambioni S.* Weiss B. P. Melikyan R. Emsenhuber A. Asphaug E. et al.
Orbital Instabilities as the Origin of Iron-Rich Planetary Bodies [#1308]
We present simulations of observed compact super-Earth systems undergoing orbital instabilities that lead to formation of super-Mercuries through giant impacts.
Gucsik A.*
Rapid Cooling Rate of Forsterite: An Implication for Silicate Atmospheres of Hot Rocky Exoplanets [#2798]
The rapid cooling of forsterite may effect the crystalline backgfround causing a high-density of the local defect centers.
Marcum S. P.* Young E. D. Stixrude L. P.
Silicate-H2 Mixing Defines the Surface of Magma Ocean Planets [#3004]
We report simulations of H2-silicate melt mixing to define conditions at the surfaces of sub-Neptunes.
Huang Z.* Yu X. Tsai S. M. Ohno K. Zhang X. et al.
Identifying Surfaces of Cool Exoplanets in JWST Era [#2917]
We present an extended framework for identifying surface conditions of cool exoplanets where condensation is important.
Khan D.* Evans A. J. Ibarra D. E . Parman S. W. Weller M. B.
The Habitability of Mercury Sized Exoplanets with Mobile and Stagnant Lid Tectonic Regimes [#2799]
We examine the thermochemical evolution of Mercury-sized bodies over a period of 10 G.y. to determine when planets nominally exist in a habitable regime.
Underwood M.* Lenardic A. Seales J.
Observations are Coming: Distinguishing Bistability in Planetary Systems and Its Expected Impact on the Search for Life [#1573]
NASA’s James Webb Telescope will provide the observational data needed to test planetary habitability hypotheses in a more comprehensive manner.
Ojha L.* Buffo J. Troncone B. Journaux B. McDonald G.
On the Likely Prevalence of Ocean-Worlds in M-Dwarf Systems [#1535]
Basal melting is likely prevalent on M-dwarf orbiting exo-Earths, even with modest, Moon-like geothermal heat flow.
Ostberg C. M.* Guzewich S. D. Kohler E. Oman L. D. Fauchez T. et al.
The Possibility of Detecting Volcanism on an ExoEarth with Future Facilities [#2893]
We used a 3D GCM to model volcanic eruptions on an exoEarth. We then modeled the reflected light spectra of the planet to identify potential indicators of volcanic activity.
Colon Cesani A. H.* Ferrer Imbert G. M. Ortiz Ceballos K. N. Mendez A.
Arecibo Reds: Radio Spectroscopy of Gliese 436 [#1243]
We use observations from the Arecibo Observatory to search for spectral lines from radio emissions of Gliese 436 and other red dwarf stars.
Mendez A.*
What's Next After Biosignatures? Exoplanet Habitat Suitability [#2569]
In this work, we present a set of observables that could be used to assess the global habitat suitability of exoplanets by future missions.
Simonia I. Gucsik A.*
Pleochroic Mineral Dust in the Planetary Systems [#1353]
In this study, pleochroic minerals are considered in the planetary rings for the case of the solar and exoplanetary systems.