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Multi-segment and Echelle stellar spectra processing issues and how to solve them

Year: 2021
Type: preprint
Abstract: High-quality stellar spectra are in great demand now - they are the most important ingredient in the stellar population synthesis to study galaxies and star clusters. Here we describe the procedures to increase the quality of flux calibration of stellar spectra. We use examples of NIR intermediate-resolution Echelle spectra collected with the Folded InfraRed Echellete (R~6500, Magellan Baade) and high-resolution UV-optical spectra observed with UVES (R~80000, ESO VLT). By using these procedures, we achieved the quality of the global spectrophotometric calibration as good as 1-2%, which fulfills the requirements for the quality of stellar spectra intended to be used in the stellar population synthesis
DOI: 10.48550/arxiv.2112.01468
Authors: Borisov, Sviatoslav, Chilingarian, Igor, Rubtsov, Evgenii, Grishin, Kirill, Katkov, Ivan, Goradzhanov, Vladimir, Afanasiev, Anton, Saburova, Anna, Kasparova, Anastasia, Zolotukhin, Ivan
Institutions: University of Geneva, Lomonosov Moscow State University, Smithsonian Astrophysical Observatory, Center for Astrophysics Harvard & Smithsonian, Centre National de la Recherche Scientifique, Université Paris Cité, Laboratoire AstroParticule et Cosmologie
Language: English
Subfield: Instrumentation
Open Access status: green
OpenAlex ID: W3217627446
Cites: 4
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