Session
2024 Session 2
Location
Salt Lake Community College Westpointe Campus, Salt Lake City, UT
Start Date
5-6-2024 9:10 AM
Description
Theoretical atmosphere models based on known physics and chemistry can be used as tools to interpret and understand our observations of brown dwarfs. We have fit archival near-infrared spectra of over 300 brown dwarfs with atmosphere models from the Sonora and Phoenix groups. Using the parameters of the best-fit models as estimates for the physical properties of the brown dwarfs in our sample, we have performed a survey of how brown dwarf atmospheres evolve with spectral type and temperature. We present the fit results and observed trends. We use these fit results to note where current atmosphere models are able to well-replicate the data and where the models and data conflict. We also categorize objects with the same ”deviant” spectral features into families and discuss possible causes for their unique spectral traits.
A Survey of Model Fits to Brown Dwarf Spectra Through the L-T Sequence
Salt Lake Community College Westpointe Campus, Salt Lake City, UT
Theoretical atmosphere models based on known physics and chemistry can be used as tools to interpret and understand our observations of brown dwarfs. We have fit archival near-infrared spectra of over 300 brown dwarfs with atmosphere models from the Sonora and Phoenix groups. Using the parameters of the best-fit models as estimates for the physical properties of the brown dwarfs in our sample, we have performed a survey of how brown dwarf atmospheres evolve with spectral type and temperature. We present the fit results and observed trends. We use these fit results to note where current atmosphere models are able to well-replicate the data and where the models and data conflict. We also categorize objects with the same ”deviant” spectral features into families and discuss possible causes for their unique spectral traits.