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Modeling Stellar Parameters For High Resolution Late-M And Early-L Dwarf Sdss/Apogee Spectra

Authors: Jessica Birky; Adam Burgasser; Christian Aganze; Christopher Theissen; Sarah Schmidt; Johanna Teske; Keivan Stassun; +1 Authors

Modeling Stellar Parameters For High Resolution Late-M And Early-L Dwarf Sdss/Apogee Spectra

Abstract

The Apache Point Observatory Galactic Evolution Experiment (APOGEE) of the Sloan Digital Sky Survey IV has measured high resolution (R~22,500), near-infrared (1.51-1.70 µm) spectra for nearly 100,000 stars within the Milky Way Galxy [1]. While the APOGEE experiment was originally designed to research Galactic structure by targeting bright stellar populations in the disk, we have focused attention on the lesser-studied subset of faint and low-temperature late-M and early-L dwarfs, with the objective of characterizing their chemical abundances. Using spectral sythesis routines from the Starfish package [2], we report preliminary determinations of Teff, logg, and [Fe/H] for a small sample of spectra using PHOENIX models [3]. We also compare these PHOENIX fits to low-resolution data from the SpeX Prism Library [4] fitted by BT-Settl models.

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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