CRIRES+ and CARMENES reduced spectroscopic observations of TOI-2109 This records contains the reduced data as used in the publication of Cont et al. 2025 "Retrieving day- and nightside atmospheric properties of the ultra-hot Jupiter TOI-2109b. Detection of Fe and CO emission lines and evidence for inefficient heat transport" currently in press with Astronomy & Astrophysics and available as preprint on arXiv. Links to the publication: ADS: TBD arXiv: TBD The data reduction steps for CRIRES+ and CARMENES data are explained in sect. 2 of the article Acknowledgements If you make use of this data in your research, please cite the Cont et al. 2025 article and this record with its DOI (10.5281/zenodo.15037659) and its reference, the bibtex reference is: @dataset{lavail_2025_15037659, author = {Lavail, Alexis}, title = {CRIRES+ and CARMENES reduced spectroscopic observations of TOI-2109 }, month = mar, year = 2025, publisher = {Zenodo}, version = {1.0}, doi = {10.5281/zenodo.15037659}, url = {https://doi.org/10.5281/zenodo.15037659},} Note also that ESO requests an acknowledgement, which in this case would be: "Based on observations made with ESO Telescopes at the La Silla Paranal Observatory under programme ID 113.26GE". This data is released under a Creative Commons Attribution 4.0 International license. CRIRES+ data The CRIRES+ data is following the same format as other records such as https://zenodo.org/records/11637332. The CRIRES+ data files are the following : 240408_TOI2109.pickle 240408_TOI2109_order1.pickle 240409_TOI2109.pickle 240409_TOI2109-order1.pickle 240526_TOI2109.pickle 240526_TOI2109-order1.pickle The standard files for each date are named YYMMDD_TOI2109.pickle. They contain the full spectrum, except the part of the first spectral order on the left-most detector. That wavelength segment is not reduced by default by the pipeline because it is slightly out of the detector on one of the nodding position. We used a custom reduction to be able to reduce this order, and it is contained in the YYMMDD_TOI2109-order1.pickle files. The reduction was done on a restricted fraction of the slit. CARMENES data The CARMENES reduced spectra are in the TOI2109.zip archive. The archive contains a README file (README_TOI2109.txt) explaining the data.