Dark Energy Survey: Galaxy Sample for the Baryonic Acoustic Oscillation
Measurement from the Final Dataset
J. Mena-Fernández,M. Rodríguez-Monroy,S. Avila,A. Porredon,K. C. Chan,H. Camacho,N. Weaverdyck,I. Sevilla-Noarbe,E. Sanchez,L. Toribio San Cipriano,J. De Vicente,I. Ferrero,R. Cawthon,A. Carnero Rosell,J. Elvin-Poole,G. Giannini,M. Adamow,K. Bechtol,A. Drlica-Wagner,R. A. Gruendl,W. G. Hartley,A. Pieres,A. J. Ross,E. S. Rykoff,E. Sheldon,B. Yanny,T. M. C. Abbott,M. Aguena,S. Allam,O. Alves,A. Amon,F. Andrade-Oliveira,J. Annis,D. Bacon,J. Blazek,S. Bocquet,D. Brooks,J. Carretero,F. J. Castander,C. Conselice,M. Crocce,L. N. da Costa,M. E. S. Pereira,T. M. Davis,N. Deiosso,S. Desai,H. T. Diehl,S. Dodelson,C. Doux,S. Everett,J. Frieman,J. García-Bellido,E. Gaztanaga,G. Gutierrez,S. R. Hinton,D. L. Hollowood,K. Honscheid,D. Huterer,K. Kuehn,O. Lahav,S. Lee,C. Lidman,H. Lin,J. L. Marshall,F. Menanteau,R. Miquel,J. Myles,R. L. C. Ogando,A. Palmese,W. J. Percival,A. A. Plazas Malagón,A. Roodman,R. Rosenfeld,S. Samuroff,D. Sanchez Cid,B. Santiago,M. Schubnell,M. Smith,E. Suchyta,M. E. C. Swanson,G. Tarle,D. Thomas,C. To,D. L. Tucker,A. R. Walker,J. Weller,P. Wiseman,M. Yamamoto
arxiv（2024）
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摘要
In this paper we present and validate the galaxy sample used for the analysis
of the baryon acoustic oscillation (BAO) signal in the Dark Energy Survey (DES)
Y6 data. The definition is based on a color and redshift-dependent magnitude
cut optimized to select galaxies at redshifts higher than 0.6, while ensuring a
high-quality photo-z determination. The optimization is performed using a
Fisher forecast algorithm, finding the optimal i-magnitude cut to be given by
i<19.64+2.894z_ ph. For the optimal sample, we forecast an increase in
precision in the BAO measurement of ∼25
Our BAO sample has a total of 15,937,556 galaxies in the redshift range
0.6更多
