학술논문
MELCHIORS: The Mercator Library of High Resolution Stellar Spectroscopy
Document Type
Working Paper
Author
Royer, P.; Merle, T.; Dsilva, K.; Sekaran, S.; Van Winckel, H.; Frémat, Y.; Van der Swaelmen, M.; Gebruers, S.; Tkachenko, A.; Laverick, M.; Dirickx, M.; Raskin, G.; Hensberge, H.; Abdul-Masih, M.; Acke, B.; Alonso, M. L.; Mahato, S. Bandhu; Beck, P. G.; Behara, N.; Bloemen, S.; Buysschaert, B.; Cox, N.; Debosscher, J.; De Cat, P.; Degroote, P.; De Nutte, R.; De Smedt, K.; de Vries, B.; Dumortier, L.; Escorza, A.; Exter, K.; Goriely, S.; Gorlova, N.; Hillen, M.; Homan, W.; Jorissen, A.; Kamath, D.; Karjalainen, M.; Karjalainen, R.; Lampens, P.; Lobel, A.; Lombaert, R.; Marcos-Arenal, P.; Menu, J.; Merges, F.; Moravveji, E.; Nemeth, P.; Neyskens, P.; Ostensen, R.; Pápics, P. I.; Perez, J.; Royer, S. Prins S.; Samadi-Ghadim, A.; Sana, H.; Fuentes, A. Sans; Scaringi, S.; Schmid, V.; Siess, L.; Siopis, C.; Smolders, K.; Sodor, S.; Thoul, A.; Triana, S.; Vandenbussche, B.; Van de Sande, M.; Van De Steene, G.; Van Eck, S.; van Hoof, P. A. M.; Van Marle, A. J.; Van Reeth, T.; Vermeylen, L.; Volpi, D.; Vos, J.; Waelkens, C.
Source
A&A 681, A107 (2024)
Subject
Language
Abstract
Over the past decades, libraries of stellar spectra have been used in a large variety of science cases, including as sources of reference spectra for a given object or a given spectral type. Despite the existence of large libraries and the increasing number of projects of large-scale spectral surveys, there is to date only one very high-resolution spectral library offering spectra from a few hundred objects from the southern hemisphere (UVES-POP) . We aim to extend the sample, offering a finer coverage of effective temperatures and surface gravity with a uniform collection of spectra obtained in the northern hemisphere. Between 2010 and 2020, we acquired several thousand echelle spectra of bright stars with the Mercator-HERMES spectrograph located in the Roque de Los Muchachos Observatory in La Palma, whose pipeline offers high-quality data reduction products. We have also developed methods to correct for the instrumental response in order to approach the true shape of the spectral continuum. Additionally, we have devised a normalisation process to provide a homogeneous normalisation of the full spectral range for most of the objects. We present a new spectral library consisting of 3256 spectra covering 2043 stars. It combines high signal-to-noise and high spectral resolution over the entire range of effective temperatures and luminosity classes. The spectra are presented in four versions: raw, corrected from the instrumental response, with and without correction from the atmospheric molecular absorption, and normalised (including the telluric correction).
Comment: 17 pages, 18 figures Preview and access to the library: https://www.royer.se/melchiors.html
Comment: 17 pages, 18 figures Preview and access to the library: https://www.royer.se/melchiors.html