Insufficient evidence for DMS and DMDS in the atmosphere of K2-18 b - From a joint analysis of JWST NIRISS, NIRSpec, and MIRI observations

Home

All issues

Volume 700 (August 2025)

A&A, 700 (2025) A284

Full HTML

Open Access

Table C.2

Same as Table C.1, but using only the NIR data from NIRISS and NIRSpec. These analyses are very much equivalent to those presented in M23 and S25, but using our custom data reductions.

Models	Dataset (no MIRI)	log X_CH₄	log X_CO₂	log X_H₂O	log X_NH₃	log X_HCN	log X_CO	log X_DMS	log X_DMDS	log X_C₂H₆	ln Z
SCARLET analyses
With DMS/DMDS/C₂H₆	`exoTEDRF`	$- {1.11}_{- 0.59}^{+ 0.34}$ $-1.11 _{ -0.59 }^{+ 0.34 }$	$- {4.49}_{- 4.71}^{+ 2.4}$ $-4.49 _{ -4.71 }^{+ 2.4 }$	< −1.9	< −3.26	< −2.23	N/A	< −3.24	< −3.34	N/A	−1737.179
With C₂H₆	`exoTEDRF`	$- {1.29}_{- 0.65}^{+ 0.45}$ $-1.29 _{ -0.65 }^{+ 0.45 }$	$- {3.4}_{- 3.04}^{+ 1.54}$ $-3.4 _{ -3.04 }^{+ 1.54 }$	< −2.0	< −3.56	< −2.2	N/A	…	…	N/A	−1737.753
With DMS/DMDS	`exoTEDRF`	$- {1.12}_{- 0.65}^{+ 0.36}$ $-1.12 _{ -0.65 }^{+ 0.36 }$	$- {4.57}_{- 4.59}^{+ 2.47}$ $-4.57 _{ -4.59 }^{+ 2.47 }$	< −1.89	< −3.28	< −2.35	N/A	< −3.21	< −3.29	…	−1737.030
Baseline	`exoTEDRF`	$- {1.31}_{- 0.75}^{+ 0.5}$ $-1.31 _{ -0.75 }^{+ 0.5 }$	$- {3.53}_{- 3.53}^{+ 1.6}$ $-3.53 _{ -3.53 }^{+ 1.6 }$	< −2.17	< −3.59	< −2.32	N/A	…	…	…	−1738.202
With DMS/DMDS/C₂H₆	`exoTEDRF+SPARTA`	$- {1.14}_{- 0.56}^{+ 0.37}$ $-1.14 _{ -0.56 }^{+ 0.37 }$	$- {2.0}_{- 2.3}^{+ 0.72}$ $-2.0 _{ -2.3 }^{+ 0.72 }$	< −1.95	< −4.4	< −3.92	N/A	< −3.91	< −4.73	N/A	−1691.526
With C₂H₆	`exoTEDRF+SPARTA`	$- {1.22}_{- 0.59}^{+ 0.41}$ $-1.22 _{ -0.59 }^{+ 0.41 }$	$- {1.94}_{- 1.52}^{+ 0.65}$ $-1.94 _{ -1.52 }^{+ 0.65 }$	< −2.3	< −4.64	< −4.23	N/A	…	…	N/A	−1691.223
With DMS/DMDS	`exoTEDRF+SPARTA`	$- {1.11}_{- 0.56}^{+ 0.35}$ $-1.11 _{ -0.56 }^{+ 0.35 }$	$- {2.05}_{- 2.4}^{+ 0.72}$ $-2.05 _{ -2.4 }^{+ 0.72 }$	< −2.03	< −4.51	< −4.06	N/A	< −3.82	< −4.52	…	−1691.749
Baseline	`exoTEDRF+SPARTA`	$- {1.21}_{- 0.56}^{+ 0.4}$ $-1.21 _{ -0.56 }^{+ 0.4 }$	$- {1.91}_{- 1.55}^{+ 0.58}$ $-1.91 _{ -1.55 }^{+ 0.58 }$	< −2.45	< −4.85	< −4.43	N/A	…	…	…	−1691.514

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.