The Lyman-$\alpha$ forest catalog from the Dark Energy Spectroscopic Instrument Early Data Release
Abstract
We present and validate the catalog of Lyman- forest fluctuations for 3D analyses using the Early Data Release (EDR) from the Dark Energy Spectroscopic Instrument (DESI) survey. We used 88,511 quasars collected from DESI Survey Validation (SV) data and the first two months of the main survey (M2). We present several improvements to the method used to extract the Lyman- absorption fluctuations performed in previous analyses from the Sloan Digital Sky Survey (SDSS). In particular, we modify the weighting scheme and show that it can improve the precision of the correlation function measurement by more than 20%. This catalog can be downloaded from https://data.desi.lbl.gov/public/edr/vac/edr/lya/fuji/v0.3 and it will be used in the near future for the first DESI measurements of the 3D correlations in the Lyman- forest.
Keywords
Cite
@article{arxiv.2306.06312,
title = {The Lyman-$\alpha$ forest catalog from the Dark Energy Spectroscopic Instrument Early Data Release},
author = {César Ramírez-Pérez and Ignasi Pérez-Ràfols and Andreu Font-Ribera and Marie Lynn Abdul-Karim and E. Armengaud and J. Bautista and S. F. Beltran and L. Cabayol-Garcia and Z. Cai and S. Chabanier and E. Chaussidon and J. Chaves-Montero and A. Cuceu and R. de la Cruz and J. García-Bellido and A. X. Gonzalez-Morales and C. Gordon and H. K. Herrera-Alcantar and V. Iršič and M. Ishak and N. G. Karaçaylı and Zarija Lukić and C. J. Manser and P. Montero-Camacho and L. Napolitano and G. Niz and M. Pieri and C. Ravoux and F. Sinigaglia and T. Tan and M. Walther and B. Wang and J. Aguilar and S. Ahlen and S. Bailey and D. Brooks and T. Claybaugh and K. Dawson and A. de la Macorra and G. Dhungana and P. Doel and K. Fanning and J. E. Forero-Romero and S. Gontcho A Gontcho and J. Guy and K. Honscheid and R. Kehoe and T. Kisner and M. Landriau and L. Le Guillou and M. E. Levi and C. Magneville and P. Martini and A. Meisner and R. Miquel and J. Moustakas and E. Mueller and A. Muñoz-Gutiérrez and J. Nie and N. Palanque-Delabrouille and W. J. Percival and G. Rossi and E. Sanchez and E. F. Schlafly and D. Schlegel and H. Seo and G. Tarlé and B. A. Weaver and C. Yèche and Z. Zhou},
journal= {arXiv preprint arXiv:2306.06312},
year = {2025}
}