Browsing by Author "Faherty, Jacqueline K."

Now showing items 1-8 of 8

    • An Atmospheric Retrieval of the Brown Dwarf Gliese 229B 

      Calamari, Emily; Faherty, Jacqueline K.; Burningham, Ben; Gonzales, Eileen; Bardalez-Gagliuffi, Daniella; Vos, Johanna M.; Gemma, Marina; Whiteford, Niall; Gaarn, Josefine (2022-12-01)
      We present results from an atmospheric retrieval analysis of Gl 229B using the Brewster retrieval code. We find the best fit model to be cloud-free, consistent with the T dwarf retrieval work of Line et al.; Zalesky et al. ...

    • Cloud busting: enstatite and quartz clouds in the atmosphere of 2M2224-0158 

      Burningham, Ben; Faherty, Jacqueline K.; Gonzales, Eileen C.; Marley, Mark S.; Visscher, Channon; Lupu, Roxana; Gaarn, Joesphine; Bieger, Michelle Fabienne; Freedman, Richard; Saumon, Didier (2021-05-18)
      We present the most detailed data-driven exploration of cloud opacity in a substellar object to-date. We have tested over 60 combinations of cloud composition and structure, particle size distribution, scattering model, ...

    • A Comparative L-dwarf Sample Exploring the Interplay Between Atmospheric Assumptions and Data Properties 

      Gonzales, Eileen C.; Burningham, Ben; Faherty, Jacqueline K.; Lewis, Nikole K.; Visscher, Channon; Marley, Mark (2022-10-13)
      Comparisons of atmospheric retrievals can reveal powerful insights on the strengths and limitations of our data and modeling tools. In this paper, we examine a sample of 5 similar effective temperature (Teff) or spectral ...

    • The first retrieval of a substellar subdwarf: A cloud-free SDSS J125637.13-022452.4 

      Gonzales, Eileen C.; Burningham, Ben; Faherty, Jacqueline K.; Visscher, Channon; Marley, Mark S.; Lupu, Roxana; Freedman, Richard; Lewis, Nikole K. (2021-12-08)
      We present the first retrieval analysis of a substellar subdwarf, SDSS J125637.13-022452.4 (SDSS J1256-0224), using the Brewster retrieval code base. We find SDSS J1256-0224 is best fit by a cloud-free model with an ion ...

    • Methane Emission From a Cool Brown Dwarf 

      Faherty, Jacqueline K.; Burningham, Ben; Gagné, Jonathan; Suárez, Genaro; Vos, Johanna M.; Merchan, Sherelyn Alejandro; Morley, Caroline V.; Rowland, Melanie; Lacy, Brianna; Kiman, Rocio; Caselden, Dan; Kirkpatrick, J. Davy; Meisner, Aaron; Schneider, Adam C.; Kuchner, Marc Jason; Bardalez-Gagliuffi, Daniella; Beichman, Charles A.; Eisenhardt, Peter; Gelino, Christopher R.; Gharib-Nezhad, Ehsan; Gonzales, Eileen; Marocco, Federico; Rothermich, Austin James; Whiteford, Niall (2024-04-18)
      Beyond our Solar System, aurorae have been inferred from radio observations of isolated brown dwarfs 1,2. Within our Solar System, giant planets have auroral emission with signatures across the electromagnetic spectrum ...

    • Patchy Forsterite Clouds in the Atmospheres of Two Highly Variable Exoplanet Analogs 

      Vos, Johanna M.; Burningham, Ben; Faherty, Jacqueline K.; Alejandro, Sherelyn; Gonzales, Eileen; Calamari, Emily; Gagliuffi, Daniella Bardalez; Visscher, Channon; Tan, Xianyu; Morley, Caroline V.; Marley, Mark; Gemma, Marina E.; Whiteford, Niall; Gaarn, Josefine; Park, Grace (2023-02-01)
      We present an atmospheric retrieval analysis of a pair of highly variable, ∼200 Myr old, early T type planetary-mass exoplanet analogs SIMP J01365662+0933473 and 2MASS J21392676+0220226 using the Brewster retrieval framework. ...

    • Predicting Cloud Conditions in Substellar Mass Objects Using Ultracool Dwarf Companions 

      Calamari, Emily; Faherty, Jacqueline K.; Visscher, Channon; Gemma, Marina E.; Burningham, Ben; Rothermich, Austin (2024-02-29)
      We present results from conducting a theoretical chemical analysis of a sample of benchmark companion brown dwarfs whose primary star is of type F, G or K. We summarize the entire known sample of these types of companion ...

    • The puzzle of the formation of T8 dwarf Ross 458c 

      Gaarn, Josefine; Burningham, Ben; Faherty, Jacqueline K.; Visscher, Channon; Marley, Mark S.; Gonzales, Eileen C.; Calamari, Emily; Gagliuffi, Daniella Bardalez; Lupu, Roxana; Freedman, Richard (2023-06-01)
      At the lowest masses, the distinction between brown dwarfs and giant exoplanets is often blurred and literature classifications rarely reflect the deuterium burning boundary. Atmospheric characterization may reveal the ...