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Predicting Cloud Conditions in Substellar Mass Objects Using Ultracool Dwarf Companions
(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
(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 ...
A Comparative L-dwarf Sample Exploring the Interplay Between Atmospheric Assumptions and Data Properties
(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
(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 ...
Cloud busting: enstatite and quartz clouds in the atmosphere of 2M2224-0158
(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, ...
Retrieval of SDSS J1416+1348AB
(2020-12-10)
We present the distance-calibrated spectral energy distribution (SED) of the d/sdL7 SDSS J14162408+1348263A (J1416A) and an updated SED for SDSS J14162408+1348263B (J1416B). We also present the first retrieval analysis of ...