Browsing by Author "Gaarn, Josefine"

Now showing items 1-4 of 4

    • 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. ...

    • 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. ...

    • 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 ...

    • Retrieving Young Cloudy L-Dwarfs : A Nearby Planetary-Mass Companion BD+60 1417B and Its Isolated Red Twin W0047 

      Phillips, Caprice L.; Faherty, Jacqueline K.; Burningham, Ben; Vos, Johanna M.; Gonzales, Eileen; Griffith, Emily J.; Merchan, Sherelyn Alejandro; Calamari, Emily; Visscher, Channon; Morley, Caroline V.; Whiteford, Niall; Gaarn, Josefine; Ilyin, Ilya; Strassmeier, Klaus (2024-09-05)
      We present an atmospheric retrieval analysis on a set of young, cloudy, red L dwarfs—CWISER J124332.12+600126.2 (BD+60 1417B) and WISEP J004701.06+680352.1 (W0047)—using the Brewster retrieval framework. We also present ...