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

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; Fiorenzo Vincenzo; Benjamin Alan Weaver; Zhimin Zhou; Hu Zou

doi:10.3847/1538-4357/acfa96

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

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, Fiorenzo Vincenzo, Benjamin Alan Weaver, Zhimin Zhou, Hu Zou

^*Corresponding author for this work

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Article number	76
Pages (from-to)	1-11
Number of pages	11
Journal	Astrophysical Journal
Volume	957
Issue number	2
DOIs	https://doi.org/10.3847/1538-4357/acfa96
Publication status	Published - 1 Nov 2023

Keywords / Materials (for Non-textual outputs)

TARGET SELECTION
MILKY-WAY
VISUAL INSPECTION
DWARF STAR
VALIDATION
ANUNDANCE
PROJECT
ENERGY
CARBON
DISCOVERY

Access to Document

10.3847/1538-4357/acfa96Licence: Creative Commons: Attribution (CC-BY)

https://arxiv.org/abs/2306.06321Licence: Creative Commons: Attribution (CC-BY)

Cite this

Allende Prieto, C., Aguado, D. S., González Hernández, J. I., Rebolo, R., Najita, J., Manser, C. J., Rockosi, C., Slepian, Z., Mezcua, M., Valluri, M., Ezzeddine, R., Koposov, S. E., Cooper, A. P., Dey, A., Gänsicke, B. T., Li, T. S., Cunha, K., Zou, S., Aguilar, J. N., ... Zou, H. (2023). GTC Follow-up Observations of Very Metal-poor Star Candidates from DESI. Astrophysical Journal, 957(2), 1-11. Article 76. https://doi.org/10.3847/1538-4357/acfa96

@article{c17b9c0d88034e3d9e1baf502c074a57,

title = "GTC Follow-up Observations of Very Metal-poor Star Candidates from DESI",

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.",

keywords = "TARGET SELECTION, MILKY-WAY, VISUAL INSPECTION, DWARF STAR, VALIDATION, ANUNDANCE, PROJECT, ENERGY, CARBON, DISCOVERY",

author = "\{Allende Prieto\}, Carlos and Aguado, \{David S.\} and \{Gonz{\'a}lez Hern{\'a}ndez\}, \{Jonay I.\} and Rafael Rebolo and Joan Najita and Manser, \{Christopher J.\} and Constance Rockosi and Zachary Slepian and Mar Mezcua and Monica Valluri and Rana Ezzeddine and Koposov, \{Sergey E.\} and Cooper, \{Andrew P.\} and Arjun Dey and G{\"a}nsicke, \{Boris T.\} and Li, \{Ting S.\} and Katia Cunha and Siwei Zou and Aguilar, \{Jessica Nicole\} and Steven Ahlen and David Brooks and Todd Claybaugh and Shaun Cole and Sarah Eftekharzadeh and Kevin Fanning and Jaime Forero-Romero and Gontcho, \{Satya Gontcho A.\} and Klaus Honscheid and Pascale Jablonka and Robert Kehoe and Theodore Kisner and Martin Landriau and \{de la Macorra\}, Axel and Aaron Meisner and Ram{\'o}n Miquel and John Moustakas and Jundan Nie and Claire Poppett and Francisco Prada and Mehdi Rezaie and Graziano Rossi and Eusebio S{\'a}nchez and Michael Schubnell and Ray Sharples and Malgorzata Siudek and Smith, \{Verne V.\} and Gregory Tarl{\'e} and Fiorenzo Vincenzo and Weaver, \{Benjamin Alan\} and Zhimin Zhou and Hu Zou",

note = "Funding Information: This material is based upon work supported by the U.S. Department of Energy (DOE), Office of Science, Office of High-Energy Physics, under Contract No. DEAC0205CH11231, and by the National Energy Research Scientific Computing Center, a DOE Office of Science User Facility under the same contract. Additional support for DESI was provided by the U.S. National Science Foundation (NSF), Division of Astronomical Sciences under Contract No. AST-0950945 to the NSF's National Optical–Infrared Astronomy Research Laboratory; the Science and Technologies Facilities Council of the United Kingdom; the Gordon and Betty Moore Foundation; the Heising–Simons Foundation; the French Alternative Energies and Atomic Energy Commission (CEA); the National Council of Science and Technology of Mexico (CONACYT); the Ministry of Science and Innovation of Spain (MICINN), and by the DESI Member Institutions: https://www.desi.lbl.gov/collaborating-institutions . Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the U. S. National Science Foundation, the U. S. Department of Energy, or any of the listed funding agencies. Funding Information: Based on observations made with the Gran Telescopio Canarias (GTC), installed at the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrof{\'i}sica de Canarias, on the island of La Palma. Funding Information: C.A.P., J.I.G.H., and R.R. acknowledge financial support from the Spanish Ministry MICINN projects AYA2017-86389-P and PID2020-117493GB-I00. Partial help was received from the program Unidad de Excelencia Mar{\'i}a de Maeztu CEX2020-001058-M. This research made use of computing time available on the high-performance computing systems at the Instituto de Astrof{\'i}sica de Canarias. D.A. acknowledges support from the European Research Council (ERC) Starting Grant NEFERTITI H2020/808240. D.A. also acknowledges financial support from the Spanish Ministry of Science and Innovation (MICINN) under the 2021 Ram{\'o}n y Cajal program MICINN RYC2021032609. The authors thankfully acknowledge the technical expertize and assistance provided by the Spanish Supercomputing Network (Red Espa{\~n}ola de Supercomputaci{\'o}n), as well as the computer resources used: the LaPalma Supercomputer and the Diva cluster, both located at the Instituto de Astrof{\'i}sica de Canarias. We have made extensive use of the software from astropy (Astropy Collaboration et al. ). Publisher Copyright: {\textcopyright} 2023. The Author(s). Published by the American Astronomical Society.",

year = "2023",

month = nov,

day = "1",

doi = "10.3847/1538-4357/acfa96",

language = "English",

volume = "957",

pages = "1--11",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

number = "2",

}

Allende Prieto, C, Aguado, DS, González Hernández, JI, Rebolo, R, Najita, J, Manser, CJ, Rockosi, C, Slepian, Z, Mezcua, M, Valluri, M, Ezzeddine, R, Koposov, SE, Cooper, AP, Dey, A, Gänsicke, BT, Li, TS, Cunha, K, Zou, S, Aguilar, JN, Ahlen, S, Brooks, D, Claybaugh, T, Cole, S, Eftekharzadeh, S, Fanning, K, Forero-Romero, J, Gontcho, SGA, Honscheid, K, Jablonka, P, Kehoe, R, Kisner, T, Landriau, M, de la Macorra, A, Meisner, A, Miquel, R, Moustakas, J, Nie, J, Poppett, C, Prada, F, Rezaie, M, Rossi, G, Sánchez, E, Schubnell, M, Sharples, R, Siudek, M, Smith, VV, Tarlé, G, Vincenzo, F, Weaver, BA, Zhou, Z & Zou, H 2023, 'GTC Follow-up Observations of Very Metal-poor Star Candidates from DESI', Astrophysical Journal, vol. 957, no. 2, 76, pp. 1-11. https://doi.org/10.3847/1538-4357/acfa96

TY - JOUR

T1 - GTC Follow-up Observations of Very Metal-poor Star Candidates from DESI

AU - Allende Prieto, Carlos

AU - Aguado, David S.

AU - González Hernández, Jonay I.

AU - Rebolo, Rafael

AU - Najita, Joan

AU - Manser, Christopher J.

AU - Rockosi, Constance

AU - Slepian, Zachary

AU - Mezcua, Mar

AU - Valluri, Monica

AU - Ezzeddine, Rana

AU - Koposov, Sergey E.

AU - Cooper, Andrew P.

AU - Dey, Arjun

AU - Gänsicke, Boris T.

AU - Li, Ting S.

AU - Cunha, Katia

AU - Zou, Siwei

AU - Aguilar, Jessica Nicole

AU - Ahlen, Steven

AU - Brooks, David

AU - Claybaugh, Todd

AU - Cole, Shaun

AU - Eftekharzadeh, Sarah

AU - Fanning, Kevin

AU - Forero-Romero, Jaime

AU - Gontcho, Satya Gontcho A.

AU - Honscheid, Klaus

AU - Jablonka, Pascale

AU - Kehoe, Robert

AU - Kisner, Theodore

AU - Landriau, Martin

AU - de la Macorra, Axel

AU - Meisner, Aaron

AU - Miquel, Ramón

AU - Moustakas, John

AU - Nie, Jundan

AU - Poppett, Claire

AU - Prada, Francisco

AU - Rezaie, Mehdi

AU - Rossi, Graziano

AU - Sánchez, Eusebio

AU - Schubnell, Michael

AU - Sharples, Ray

AU - Siudek, Malgorzata

AU - Smith, Verne V.

AU - Tarlé, Gregory

AU - Vincenzo, Fiorenzo

AU - Weaver, Benjamin Alan

AU - Zhou, Zhimin

AU - Zou, Hu

N1 - Funding Information: This material is based upon work supported by the U.S. Department of Energy (DOE), Office of Science, Office of High-Energy Physics, under Contract No. DEAC0205CH11231, and by the National Energy Research Scientific Computing Center, a DOE Office of Science User Facility under the same contract. Additional support for DESI was provided by the U.S. National Science Foundation (NSF), Division of Astronomical Sciences under Contract No. AST-0950945 to the NSF's National Optical–Infrared Astronomy Research Laboratory; the Science and Technologies Facilities Council of the United Kingdom; the Gordon and Betty Moore Foundation; the Heising–Simons Foundation; the French Alternative Energies and Atomic Energy Commission (CEA); the National Council of Science and Technology of Mexico (CONACYT); the Ministry of Science and Innovation of Spain (MICINN), and by the DESI Member Institutions: https://www.desi.lbl.gov/collaborating-institutions . Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the U. S. National Science Foundation, the U. S. Department of Energy, or any of the listed funding agencies. Funding Information: Based on observations made with the Gran Telescopio Canarias (GTC), installed at the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofísica de Canarias, on the island of La Palma. Funding Information: C.A.P., J.I.G.H., and R.R. acknowledge financial support from the Spanish Ministry MICINN projects AYA2017-86389-P and PID2020-117493GB-I00. Partial help was received from the program Unidad de Excelencia María de Maeztu CEX2020-001058-M. This research made use of computing time available on the high-performance computing systems at the Instituto de Astrofísica de Canarias. D.A. acknowledges support from the European Research Council (ERC) Starting Grant NEFERTITI H2020/808240. D.A. also acknowledges financial support from the Spanish Ministry of Science and Innovation (MICINN) under the 2021 Ramón y Cajal program MICINN RYC2021032609. The authors thankfully acknowledge the technical expertize and assistance provided by the Spanish Supercomputing Network (Red Española de Supercomputación), as well as the computer resources used: the LaPalma Supercomputer and the Diva cluster, both located at the Instituto de Astrofísica de Canarias. We have made extensive use of the software from astropy (Astropy Collaboration et al. ). Publisher Copyright: © 2023. The Author(s). Published by the American Astronomical Society.

PY - 2023/11/1

Y1 - 2023/11/1

N2 - 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.

AB - 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.

KW - TARGET SELECTION

KW - MILKY-WAY

KW - VISUAL INSPECTION

KW - DWARF STAR

KW - VALIDATION

KW - ANUNDANCE

KW - PROJECT

KW - ENERGY

KW - CARBON

KW - DISCOVERY

UR - https://www.scopus.com/pages/publications/85176949044

U2 - 10.3847/1538-4357/acfa96

DO - 10.3847/1538-4357/acfa96

M3 - Article

AN - SCOPUS:85176949044

SN - 0004-637X

VL - 957

SP - 1

EP - 11

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

M1 - 76

ER -

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

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Data from: GTC FOLLOW-UP OBSERVATIONS OF VERY METAL-POOR STAR CANDIDATES FROM DESI

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

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Keywords / Materials (for Non-textual outputs)

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Data from: GTC FOLLOW-UP OBSERVATIONS OF VERY METAL-POOR STAR CANDIDATES FROM DESI

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