2024-03-29T06:13:59Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/2130852020-06-04T06:34:20Zcom_10261_97com_10261_4com_10261_16com_10261_8col_10261_350col_10261_269
MEGARA-GTC stellar spectral library: I
García-Vargas, M. L.
Carrasco, E.
Mollá, M.
Gil de Paz, A.
Berlanas, S. R.
Cardiel, N.
Gómez-Álvarez, P.
Gallego, J.
Iglesias-Páramo, J.
Cedazo, R.
Pascual, S.
Castillo-Morales, A.
Pérez-Calpena, A.
Martínez-Delgado, I.
Ministerio de Economía y Competitividad (España)
European Commission
Fractal Analytics
Instituto Nacional de Astrofísica, Óptica y Electrónica (México)
Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (España)
Atlases
Catalogues
Stars: abundances
Stars: fundamental parameters
Globular clusters: individual: M15
MEGARA (Multi Espectrógrafo en GTC de Alta Resolución para Astronomía) is an optical (3650-9750 Å), fibre-fed, medium-high spectral resolution (R = 6000, 12 000 and 20 000) instrument for the Gran Telescopio CANARIAS (GTC) 10.4-m telescope, commissioned in the summer of 2017, and currently in operation. The scientific exploitation of MEGARA requires a stellar spectra library to interpret galaxy data and to estimate the contribution of the stellar populations. In this paper, we introduce the MEGARA-GTC spectral library, detailing the rationale behind the building of this catalogue. We present the spectra of 97 stars (21 individual stars and 56 members of the globular cluster M15, which are both subsamples taken during the commissioning runs, and 20 stars from our ongoing GTC Open-Time programme). The spectra have R = 20 000 in the HR-R and HR-I set-ups, centred at 6563 and 8633 Å, respectively. We describe the procedures to reduce and analyse the data. Then, we determine the best-fitting theoretical models to each spectrum through a χ2 minimization technique, to derive the stellar physical parameters, and we discuss the results. We have also measured some absorption lines and indices. Finally, we introduce our project to complete the library and the data base in order to make the spectra available to the community.© 2020 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society
2020-06-03T07:13:54Z
2020-06-03T07:13:54Z
2020
artículo
Monthly Notices of the Royal Astronomical Society 493(1): 871-898 (2020)
0035-8711
http://hdl.handle.net/10261/213085
10.1093/mnras/staa126
http://dx.doi.org/10.13039/501100009613
http://dx.doi.org/10.13039/501100003329
http://dx.doi.org/10.13039/501100000780
eng
Publisher's version
http://dx.doi.org/ 10.1093/mnras/staa126
Sí
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/AYA2016-75808-R
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/AYA2016-79724-C4-3-P
openAccess
Oxford University Press