MISTRAL observations of the C/2022 E3 (ZTF) comet by the Aix-Marseille M2 students: first science results

• Main Authors: Adami, C., Jehin, Emmanuel, Aravind, K., Ahmad, Y., Roy, A., Carvajal-Bohorquez, C., Garnichey, M., Hasan, M., Hassaine, D., Jimenez de la Vega, N. E., Kaddour, A., Kueviakoe, V., Mendil, R., Michel, F., Anderson, S., Delsanti, A., LeCoroller, H., Russeil, D., Lazzarini, S., Litman, A.
• Format: Conference Object
• Language: English
• Published: 2023
• Subjects: instrumentation; spectropolarimeter; stellar magnetism; Physical; chemical; mathematical & earth Sciences; Space science; astronomy & astrophysics; Physique; chimie; mathématiques & sciences de la terre; Aérospatiale; astronomie & astrophysique; narval
• Online Access: https://orbi.uliege.be/handle/2268/308913; https://orbi.uliege.be/bitstream/2268/308913/1/2023sf2a.conf.511A.pdf

After the upgrade of the Narval instrument at TBL to NeoNarval, concerns have been raised regarding the quality of results in polarimetry and precision in velocimetry. Investigations into the topic have hinted at both instrumental and software issues that must be resolved in order to accurately exploit the data. We present our discoveries of issues and subsequent work performed to improve the reduction of NeoNarval data. We aim to provide comparisons between the DRS and a pipeline utilised for similar instruments, as well as initial attempts to implement new methods. PyReduce, an open-source reduction pipeline for echelle spectrographs, has modules already designed for a variety of currently-used instruments as well as initialisation of a number of options allowing for the evolution and expansion of its functions, which is of great benefit for integrating the specifics of the NeoNarval instrument.