Published January 24, 2025
| Version 1.0
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K2-18 Re-analysis (K2-18b JWST Transits NIRISS SOSS + NIRSpec G395H) — Supplementary Data
Authors/Creators
-
Schmidt, Stephen
(Project leader)1
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MacDonald, Ryan
(Project member)
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Tsai, Shang-min
(Project member)
-
Radica, Michael
(Project member)
-
Wang, Le Chris
(Project member)
-
Ahrer, Eva-Maria
(Project member)
-
Bell, Taylor
(Project member)
-
Fisher, Chloe
(Project member)
-
Thorngren, Daniel
(Project member)
-
Wogan, Nicholas
(Project member)
- et al. Show all 16 authors
Authors/Creators
-
Schmidt, Stephen
(Project leader)1
-
MacDonald, Ryan
(Project member)
-
Tsai, Shang-min
(Project member)
-
Radica, Michael
(Project member)
-
Wang, Le Chris
(Project member)
-
Ahrer, Eva-Maria
(Project member)
-
Bell, Taylor
(Project member)
-
Fisher, Chloe
(Project member)
-
Thorngren, Daniel
(Project member)
-
Wogan, Nicholas
(Project member)
-
May, Erin
(Project member)
-
Ferrari, Piero
(Project member)
-
Bennett, Katherine
(Project member)
-
Rustamkulov, Zafar
(Project member)
-
López-Morales, Mercedes
(Project member)
-
Sing, David
(Project member)
-
1.
John Hopkins University
Description
Supplementary material for "A Comprehensive Re-analysis of K2-18 b's JWST NIRISS+NIRSpec Transmission Spectrum" by Schmidt et al., submitted to AAS Journals (2025).
This repository contains three categories of data products:
- Data reduction reproduction — Eureka! control files (.ecf) and parameter files (.epf) alongside saved Stage 3 output for the two reductions of the NIRSpec G395H visit. These allow replication of our data reduction, light curve fitting, and transmission spectra extraction using the open-source code Eureka!
- Transmission spectra — Reduced transmission spectra for NIRSpec G395H and NIRISS SOSS from Eureka!, FIREFLy, and exoTEDRF for different spectral resolutions.
- Retrievals — Corner plots from atmospheric retrievals applied to each combination of NIRISS SOSS + NIRSpec G395H data sets. The retrievals used the open-source code POSEIDON as well as the open-source code BeAR.
For any additional data requests or questions, please contact: sschmi42@jh.edu