Ramírez-Pérez, C;
Pérez-Ràfols, I;
Font-Ribera, A;
Abdul Karim, M;
Armengaud, E;
Bautista, J;
Beltran, SF;
... Zhou, Z; + view all
(2024)
The Lyman-α forest catalogue from the Dark Energy Spectroscopic Instrument Early Data Release.
Monthly Notices of the Royal Astronomical Society
, 528
(4)
pp. 6666-6679.
10.1093/mnras/stad3781.
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Abstract
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.
| Type: | Article |
|---|---|
| Title: | The Lyman-α forest catalogue from the Dark Energy Spectroscopic Instrument Early Data Release |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1093/mnras/stad3781 |
| Publisher version: | http://dx.doi.org/10.1093/mnras/stad3781 |
| Language: | English |
| Additional information: | Copyright © 2023 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. |
| Keywords: | Catalogues, intergalactic medium, dark energy, large-scale structure of Universe |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10188502 |
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