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The conflation of the PDZs has several advantages over the usual method of modelling all the photometry together, including the modularity, speed, and accuracy of the results. Using a sample of galaxies with narrow-band photometry in 56 bands from J-PAS and deeper <jats:italic>gr\u03afzy<\/jats:italic> photometry from the Hyper-SuprimeCam Subaru Strategic program (HSC-SSP), we show that PDZ conflation significantly improves photo-<jats:italic>z<\/jats:italic> accuracy compared to fitting all the photometry or using a weighted average of point estimates. The improvement over J-PAS alone is particularly strong for <jats:italic>i<\/jats:italic>\u227322 sources, which have low signal-to-noise ratios in the J-PAS bands. For the entire <jats:italic>i<\/jats:italic>&lt;22.5 sample, we obtain a 64% (45%) increase in the number of sources with redshift errors |\u0394<jats:italic>z<\/jats:italic>|&lt;0.003, a factor of 3.3 (1.9) decrease in the normalised median absolute deviation of the errors (<jats:italic>\u03c3<\/jats:italic><jats:sub>NMAD<\/jats:sub>), and a factor of 3.2 (1.3) decrease in the outlier rate (<jats:italic>\u03b7<\/jats:italic>) compared to J-PAS (HSC-SSP) alone. The photo-<jats:italic>z<\/jats:italic> accuracy gains from combining the PDZs of J-PAS with a deeper broad-band survey such as HSC-SSP are equivalent to increasing the depth of J-PAS observations by ~ 1.2\u20131.5 mag. These results demonstrate the potential of PDZ conflation and highlight the importance of including the full PDZs in photo-<jats:italic>z<\/jats:italic> catalogues.<\/jats:p>","DOI":"10.1051\/0004-6361\/202348513","type":"journal-article","created":{"date-parts":[[2024,2,19]],"date-time":"2024-02-19T12:47:18Z","timestamp":1708346838000},"page":"A61","source":"Crossref","is-referenced-by-count":4,"title":["The miniJPAS survey: Maximising the photo-<i>z<\/i> accuracy from multi-survey datasets with probability conflation"],"prefix":"10.1051","volume":"684","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4237-5500","authenticated-orcid":false,"given":"A.","family":"Hern\u00e1n-Caballero","sequence":"first","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1710-6613","authenticated-orcid":false,"given":"M.","family":"Akhlaghi","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5743-3160","authenticated-orcid":false,"given":"C.","family":"L\u00f3pez-Sanjuan","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3135-2191","authenticated-orcid":false,"given":"H.","family":"V\u00e1zquez Rami\u00f3","sequence":"additional","affiliation":[]},{"given":"J.","family":"Laur","sequence":"additional","affiliation":[]},{"given":"J.","family":"Varela","sequence":"additional","affiliation":[]},{"given":"T.","family":"Civera","sequence":"additional","affiliation":[]},{"given":"D.","family":"Muniesa","sequence":"additional","affiliation":[]},{"given":"A.","family":"Finoguenov","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9490-899X","authenticated-orcid":false,"given":"J. 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