The Lyman-α forest catalogue from the Dark Energy Spectroscopic Instrument Early Data Release

Ramírez-Pérez, César; Pérez-Ràfols, Ignasi; Font-Ribera, Andreu; Karim, M. Abdul; Armengaud, E.; Bautista, J.; Beltran, S. F.; Cabayol-Garcia, L.; Cai, Z.; Chabanier, S.; Chaussidon, E.; Chaves-Montero, J.; Cuceu, A.; de la Cruz, R.; García-Bellido, J.; Gonzalez-Morales, A. X.; Gordon, C.; Herrera-Alcantar, H. K.; Iršič, V.; Ishak, M.; Karaçaylı, N. G.; Lukić, Zarija; Manser, C. J.; Montero-Camacho, P.; Napolitano, L.; Niz, G.; Pieri, M. M.; Ravoux, C.; Sinigaglia, F.; Tan, T.; Walther, M.; Wang, B.; Aguilar, J.; Ahlen, S.; Bailey, S.; Brooks, D.; Claybaugh, T.; Dawson, K.; de la Macorra, A.; Dhungana, G.; Doel, P.; Fanning, K.; Forero-Romero, J. E.; Gontcho, S. Gontcho A.; Guy, J.; Honscheid, K.; Kehoe, R.; Kisner, T.; Landriau, M.; Le Guillou, L.; Levi, M. E.; Magneville, C.; Martini, P.; Meisner, A.; Miquel, R.; Moustakas, J.; Mueller, E.; Muñoz-Gutiérrez, A.; Nie, J.; Palanque-Delabrouille, N.; Percival, W. J.; Rossi, G.; Sanchez, E.; Schlafly, E. F.; Schlegel, D.; Seo, H.; Tarlé, G.; Weaver, B. A.; Yéche, C.; Zhou, Z.
Referencia bibliográfica

Monthly Notices of the Royal Astronomical Society

Fecha de publicación:
3
2024
Número de autores
70
Número de autores del IAC
1
Número de citas
26
Número de citas referidas
14
Descripción
We present and validate the catalogue of Lyman-α 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-α 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 per cent. This catalogue 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-α forest.