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GTC follow-up observations of very metal-poor star candidates from DESI
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(2023) GTC follow-up observations of very metal-poor star candidates from DESI. The Astrophysical Journal, 957 (2). 76. doi:10.3847/1538-4357/acfa96 ISSN 1538-4357.
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Official URL: http://doi.org/10.3847/1538-4357/acfa96
Abstract
The observations from the Dark Energy Spectroscopic Instrument (DESI) will significantly increase the numbers of known extremely metal-poor stars by a factor of ∼10, improving the sample statistics to study the early chemical evolution of the Milky Way and the nature of the first stars. In this paper we report follow-up observations with high signal-to-noise ratio of nine metal-poor stars identified during the DESI commissioning with the Optical System for Imaging and Low-Resolution Integrated Spectroscopy (OSIRIS) instrument on the 10.4 m Gran Telescopio Canarias. The analysis of the data using a well-vetted methodology confirms the quality of the DESI spectra and the performance of the pipelines developed for the data reduction and analysis of DESI data.
Item Type: | Journal Article | |||||||||||||||||||||||||||||||||||||||
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Subjects: | Q Science > QB Astronomy | |||||||||||||||||||||||||||||||||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | |||||||||||||||||||||||||||||||||||||||
SWORD Depositor: | Library Publications Router | |||||||||||||||||||||||||||||||||||||||
Library of Congress Subject Headings (LCSH): | Metal-poor stars , Milky Way, Cosmic abundances, Astronomical spectroscopy | |||||||||||||||||||||||||||||||||||||||
Journal or Publication Title: | The Astrophysical Journal | |||||||||||||||||||||||||||||||||||||||
Publisher: | The American Astronomical Society | |||||||||||||||||||||||||||||||||||||||
ISSN: | 1538-4357 | |||||||||||||||||||||||||||||||||||||||
Official Date: | 1 November 2023 | |||||||||||||||||||||||||||||||||||||||
Dates: |
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Volume: | 957 | |||||||||||||||||||||||||||||||||||||||
Number: | 2 | |||||||||||||||||||||||||||||||||||||||
Article Number: | 76 | |||||||||||||||||||||||||||||||||||||||
DOI: | 10.3847/1538-4357/acfa96 | |||||||||||||||||||||||||||||||||||||||
Status: | Peer Reviewed | |||||||||||||||||||||||||||||||||||||||
Publication Status: | Published | |||||||||||||||||||||||||||||||||||||||
Access rights to Published version: | Open Access (Creative Commons) | |||||||||||||||||||||||||||||||||||||||
Date of first compliant deposit: | 8 November 2023 | |||||||||||||||||||||||||||||||||||||||
Date of first compliant Open Access: | 10 November 2023 | |||||||||||||||||||||||||||||||||||||||
RIOXX Funder/Project Grant: |
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