2023ApJ...957...76A

Query : 2023ApJ...957...76A

2023ApJ...957...76A - Astrophys. J., 957, 76 (2023/November-2)

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

ALLENDE PRIETO C., AGUADO D.S., GONZALEZ HERNANDEZ 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., GANSICKE B.T., LI T.S., CUNHA K., ZOU S., AGUILAR J.N., AHLEN S., BROOKS D., CLAYBAUGH T., COLE S., EFTEKHARZADEH S., FANNING K., FORERO-ROMERO J., GONTCHO A GONTCHO S., 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., SANCHEZ E., SCHUBNELL M., SHARPLES R., SIUDEK M., SMITH V.V., TARLE G., VINCENZO F., WEAVER B.A., ZHOU Z. and ZOU H.

Abstract (from CDS):

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.

Abstract Copyright: © 2023. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Spectroscopy - Field stars - Milky Way formation

Status at CDS : All or part of tables of objects will be ingested in SIMBAD with priority 1.

Simbad objects: 3

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Number of rows : 3
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 2MASS J13132688-0019415 Pe* 13 13 26.8884339336 -00 19 41.336280264           CEMP-no 37 0
2 Wolf 1492 Pe* 13 40 02.4921849768 -00 02 18.750053436 11.601 11.832 11.451 11.184 10.892 sdF0: 299 0
3 SMSS J160540.18-144323.1 Pe* 16 05 40.1836670077 -14 43 23.174298356   16.670 15.814 15.494 14.567 CEMP 19 0

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