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arXiv · 2607.26149

The Twentieth Data Release of the Sloan Digital Sky Survey: First All-Sky BOSS Spectra, eROSITA-SDSS-V Mapper Coordinated Observations, and a Preview of the Local Volume Mapper

SDSS Collaboration·Mojgan Aghakhanloo·David Aguilar·James Aird·Andrés Almeida·Bella Abigail Sanabria Alonso·Hillary Diane Andales·Scott F. Anderson·Stefan Arseneau·Consuelo González Ávila·Shir Aviram·Catarina Aydar·Carles Badenes·Carolina Andonie·Jorge K. Barrera-Ballesteros·Franz E. Bauer·Chad Bender·Michelle A. Berg·F. Besser·Binod Bhattarai·Christian Moni Bidin·Jonathan C. Bird·Dmitry Bizyaev·Guillermo A. Blanc·Alexandra Bonkoski·Jo Bovy·Andrea Bracamonte·W. N. Brandt·Jaco Brink·Joel R. Brownstein·Esra Bulbul·Joseph N. Burchett·Robert E. Butler·Leticia Carigi·Joleen K. Carlberg·Andrew R. Casey·Lesly Castañeda-Carlos·Fernanda Milla Castro·Priyanka Chakraborty·Julio Chanamé·Vedant Chandra·Brian Cherinka·Igor Chilingarian·Arlin Cortes·Maren Cosens·Irene Cruz-Gonzalez·Elena D'Onghia·Collin Dabbieri·Xinyu Dai·Jeremy Darling·James W. Davidson Jr.·Megan C. Davis·Nathan De Lee·Niall Deacon·José Eduardo Méndez Delgado·Sebastian Demasi·Mariia Demianenko·Delvin Demke·Francesco Di Mille·Bruno Dias·Ariana Didiano·John Donor·Ethan Driscoll·Niv Drory·Liam Dubay·Moníca A Villa Durango·Tom Dwelly·Oleg Egorov·Evgeniya Egorova·Kareem El-Badry·Michael Eracleous·Xiaohui Fan·Liliana Flores·Peter Frinchaboy·Nicola Pietro Gentile Fusillo·Luis Daniel Serrano Félix·Boris T. Gänsicke·Emma Galligan·Dante Garcia·Pablo García·Junqiang Ge·Joseph Gelfand·Simon C. O. Glover·Juan Daniel Gonzalez Ruiz·Katie Grabowski·Eva K. Grebel·Paul J. Green·Catherine Grier·Emily J. Griffith·Paloma Guetzoyan·Pramod Gupta·Patrick B. Hall·Audrey Hauck·Keith Hawkins·Saskia Hekker·T. M. Herbst·J. J. Hermes·J. Hernández·Lorena Hernández-García·Thomas Hilder
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Abstract

This paper presents the twentieth data release (DR20) from the Sloan Digital Sky Survey, the third data release of its fifth generation (SDSS-V). SDSS-V is a panoptic spectroscopy survey that is mapping the stars, gas, and galaxies through three scientific programs: the Milky Way Mapper (MWM), the Local Volume Mapper (LVM), and the Black Hole Mapper (BHM). DR20 presents the first optical (BOSS) SDSS-V spectra from southern hemisphere for the MWM and BHM surveys; new optical MWM and BHM data from the northern hemisphere are also available, for a total over 3 million spectra of 1.5 million stars and half a million galaxies and quasars, with galactic and extragalactic x-ray targets coordinate with eROSITA DR2. DR20 includes integral field spectroscopy maps from LVM of six targets and 169 tiles, spanning Galactic HII regions, planetary nebulae, and nearby galaxies. Additionally, eighteen value added catalogs are also released with DR20, based on SDSS-V MWM and BHM data, and we present a new LVM visualization tool including an RGB HiPS map as a value added product.

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SDSS Collaboration, Mojgan Aghakhanloo, David Aguilar, James Aird, Andrés Almeida, Bella Abigail Sanabria Alonso, Hillary Diane Andales, Scott F. Anderson, Stefan Arseneau, Consuelo González Ávila, Shir Aviram, Catarina Aydar, Carles Badenes, Carolina Andonie, Jorge K. Barrera-Ballesteros, Franz E. Bauer, Chad Bender, Michelle A. Berg, F. Besser, Binod Bhattarai, Christian Moni Bidin, Jonathan C. Bird, Dmitry Bizyaev, Guillermo A. Blanc, Alexandra Bonkoski, Jo Bovy, Andrea Bracamonte, W. N. Brandt, Jaco Brink, Joel R. Brownstein, Esra Bulbul, Joseph N. Burchett, Robert E. Butler, Leticia Carigi, Joleen K. Carlberg, Andrew R. Casey, Lesly Castañeda-Carlos, Fernanda Milla Castro, Priyanka Chakraborty, Julio Chanamé, Vedant Chandra, Brian Cherinka, Igor Chilingarian, Arlin Cortes, Maren Cosens, Irene Cruz-Gonzalez, Elena D'Onghia, Collin Dabbieri, Xinyu Dai, Jeremy Darling, James W. Davidson Jr., Megan C. Davis, Nathan De Lee, Niall Deacon, José Eduardo Méndez Delgado, Sebastian Demasi, Mariia Demianenko, Delvin Demke, Francesco Di Mille, Bruno Dias, Ariana Didiano, John Donor, Ethan Driscoll, Niv Drory, Liam Dubay, Moníca A Villa Durango, Tom Dwelly, Oleg Egorov, Evgeniya Egorova, Kareem El-Badry, Michael Eracleous, Xiaohui Fan, Liliana Flores, Peter Frinchaboy, Nicola Pietro Gentile Fusillo, Luis Daniel Serrano Félix, Boris T. Gänsicke, Emma Galligan, Dante Garcia, Pablo García, Junqiang Ge, Joseph Gelfand, Simon C. O. Glover, Juan Daniel Gonzalez Ruiz, Katie Grabowski, Eva K. Grebel, Paul J. Green, Catherine Grier, Emily J. Griffith, Paloma Guetzoyan, Pramod Gupta, Patrick B. Hall, Audrey Hauck, Keith Hawkins, Saskia Hekker, T. M. Herbst, J. J. Hermes, J. Hernández, Lorena Hernández-García, Thomas Hilder. 2026-07-28. The Twentieth Data Release of the Sloan Digital Sky Survey: First All-Sky BOSS Spectra, eROSITA-SDSS-V Mapper Coordinated Observations, and a Preview of the Local Volume Mapper. https://arxiv.org/abs/2607.26149

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