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Toward Robust Atmospheric Retrieval on Cloudy L Dwarfs: the Impact of Thermal and Abundance Profile Assumptions

We performed a suite of retrievals on self-consistent Sonora Bobcat spectra to show how different pressure-temperature profile parameterizations and uniform-with-pressure chemical abundance profiles can bias retrieved parameters. We developed a non-uniform abundance profile parameterization and identify specific gases and effective temperatures where such a parameterization may be needed.

Methane Emission From a Cool Brown Dwarf

In Faherty et al. (including Rowland) 2024 (published in Nature), we detected methane in emission in an isolated, cold brown dwarf, which we believe is an auroral signature.

publications

Toward Robust Atmospheric Retrieval on Cloudy L Dwarfs: the Impact of Thermal and Abundance Profile Assumptions

Published in The Astrophysical Journal, 2023

We performed a suite of retrievals on synthetic Sonora Bobcat models to show how different pressure-temperature profile parameterizations and uniform-with-pressure chemical abundance profiles can bias retrieved parameters. We develop a non-uniform abundance profile parameterization and identify specific gases and effective temperatures where such a parameterization may be needed.

Paper Title Number 4

Published in GitHub Journal of Bugs, 2024

This paper is about fixing template issue #693.

Recommended citation: Your Name, You. (2024). "Paper Title Number 3." GitHub Journal of Bugs. 1(3).
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research

Toward Robust Atmospheric Retrieval on Cloudy L Dwarfs: the Impact of Thermal and Abundance Profile Assumptions

Published:

We performed a suite of retrievals on synthetic Sonora Bobcat models to show how different pressure-temperature profile parameterizations and uniform-with-pressure chemical abundance profiles can bias retrieved parameters. We develop a non-uniform abundance profile parameterization and identify specific gases and effective temperatures where such a parameterization may be needed.

Download Paper

A Protosolar D/H Abundance and One Part-per-billion PH3 in the Coldest Brown Dwarf

Published:

We made the first detection of deueterium in an extrasolar atmosphere through the detection of deuterated methane and constrain a one part-per-billion abundance of phosphine in WISE 0855. We performed a suite of retrievals on two independant JWST NIRSpec G395M spectra of the object and preform cross correlation analyses to confirm our findings.

talks

teaching

Teaching experience 1

Undergraduate course, University 1, Department, 2014

This is a description of a teaching experience. You can use markdown like any other post.

Teaching experience 2

Workshop, University 1, Department, 2015

This is a description of a teaching experience. You can use markdown like any other post.