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GTC Follow-up Observations of Very Metal-poor Star Candidates from DESI

Allende Prieto, Carlos; Aguado, David S.; González Hernández, Jonay I.; Rebolo, Rafael; Najita, Joan; Manser, Christopher J.; Rockosi, Constance; Slepian, Zachary; Mezcua, Mar; Valluri, Monica; Ezzeddine, Rana; Koposov, Sergey E.; Cooper, Andrew P.; Dey, Arjun; Gänsicke, Boris T.; Li, Ting S.; Cunha, Katia; Zou, Siwei; Aguilar, Jessica Nicole; Ahlen, Steven; Brooks, David; Claybaugh, Todd; Cole, Shaun; Eftekharzadeh, Sarah; Fanning, Kevin; Forero-Romero, Jaime; Gontcho, Satya Gontcho A; Honscheid, Klaus; Jablonka, Pascale; Kehoe, Robert; Kisner, Theodore; Landriau, Martin; de la Macorra, Axel; Meisner, Aaron; Miquel, Ramón; Moustakas, John; Nie, Jundan; Poppett, Claire; Prada, Francisco; Rezaie, Mehdi; Rossi, Graziano; Sánchez, Eusebio; Schubnell, Michael; Sharples, Ray; Siudek, Malgorzata; Smith, Verne V.; Tarlé, Gregory; Vincenzo, Fiorenzo; Weaver, Benjamin Alan; Zhou, Zhimin; Zou, Hu

Authors

Carlos Allende Prieto

David S. Aguado

Jonay I. González Hernández

Rafael Rebolo

Joan Najita

Christopher J. Manser

Constance Rockosi

Zachary Slepian

Mar Mezcua

Monica Valluri

Rana Ezzeddine

Sergey E. Koposov

Andrew P. Cooper

Arjun Dey

Boris T. Gänsicke

Ting S. Li

Katia Cunha

Siwei Zou

Jessica Nicole Aguilar

Steven Ahlen

David Brooks

Todd Claybaugh

Shaun Cole

Sarah Eftekharzadeh

Kevin Fanning

Jaime Forero-Romero

Satya Gontcho A Gontcho

Klaus Honscheid

Pascale Jablonka

Robert Kehoe

Theodore Kisner

Martin Landriau

Axel de la Macorra

Aaron Meisner

Ramón Miquel

John Moustakas

Jundan Nie

Claire Poppett

Francisco Prada

Mehdi Rezaie

Graziano Rossi

Eusebio Sánchez

Michael Schubnell

Ray Sharples

Malgorzata Siudek

Verne V. Smith

Gregory Tarlé

Benjamin Alan Weaver

Zhimin Zhou

Hu Zou



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.

Citation

Allende Prieto, C., Aguado, D. S., González Hernández, J. I., Rebolo, R., Najita, J., Manser, C. J., …Zou, H. (2023). GTC Follow-up Observations of Very Metal-poor Star Candidates from DESI. The Astrophysical journal, 957(2), Article 76. https://doi.org/10.3847/1538-4357/acfa96

Journal Article Type Article
Acceptance Date Aug 7, 2023
Online Publication Date Nov 1, 2023
Publication Date Nov 1, 2023
Deposit Date Nov 7, 2023
Publicly Available Date Nov 8, 2023
Journal The Astrophysical Journal
Print ISSN 0004-637X
Electronic ISSN 1538-4357
Publisher American Astronomical Society
Peer Reviewed Peer Reviewed
Volume 957
Issue 2
Article Number 76
DOI https://doi.org/10.3847/1538-4357/acfa96
Keywords Space and Planetary Science; Astronomy and Astrophysics
Public URL https://hull-repository.worktribe.com/output/4434284

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Publisher Licence URL
http://creativecommons.org/licenses/by/4.0

Copyright Statement
© 2023. The Author(s). Published by the American Astronomical Society.
Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.






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