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Astrophysics Source Code Library

Making codes discoverable since 1999

Searching for codes credited to 'Llama, Joe'

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Found 2 codes.

[ascl:2502.020] IGRINS_RV: Radial velocity pipeline for IGRINS
Stahl, Asa G.; Tang, Shih-Yun; Johns-Krull, Christopher M.; Prato, L.; Llama, Joe; Mace, Gregory N.; Joon Lee, Jae; Oh, Heeyoung; Luna, Jessica; Jaffe, Daniel T.
IGRINS RV extracts radial velocities (RVs) from spectra taken with the Immersion GRating INfrared Spectrometer (IGRINS). It uses a modified forward modeling technique that leverages telluric absorption lines as a common-path wavelength calibrator. IGRINS RV achieves an RV precision in the H and K bands of around 25-30 m/s for narrow-line stars.
[ascl:2306.030] Butterpy: Stellar butterfly diagram and rotational light curve simulator
Claytor, Zachary R.; Lucas, Miles; Llama, Joe
Butterpy simulates star spot emergence, evolution, decay, and stellar rotational light curves. It tests the recovery of stellar rotation periods using different frequency analysis techniques. Butterpy can simulate light curves of stars with variable activity level, rotation period, spot lifetime, magnetic cycle duration and overlap, spot emergence latitudes, and latitudinal differential rotation shear.