{"paper":{"title":"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","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.CO","astro-ph.IM","astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"Abner Zapata, Adam Moss, Adrian M. Price-Whelan, Aida Wofford, Alejandra Z. Lugo-Aranda, Alexander Stone-Martinez, Alexandra Bonkoski, Alex Ji, Alfredo J. Mej\\'{i}a-Narv\\'{a}ez, Allyson Sheffield, Amaya Sinha, Amelia Stutz, Amir Kalechman, Amrita Singh, Amy L. Rankine, Amy M. Jones, Ana Sof\\'{i}a Uzsoy, Anastasiia Plotnikova, Andrea Bracamonte, Andrea Merloni, Andreas A. C. Sander, Andr\\'{e}s Almeida, Andrew K. Saydjari, Andrew R. Casey, Andrew Tkachenko, Aniruddha R. Thakar, Anne-Marie Weijmans, Anton M. Koekemoer, Ariana Didiano, Arlin Cortes, A. Roman-Lopes, Audrey Hauck, Audrey Oravetz, Axel Schwope, Bella Abigail Sanabria Alonso, Benny Trakhtenbrot, Binod Bhattarai, Boris T. G\\\"{a}nsicke, Bowen Li, Brian Cherinka, Bruno Dias, C. Alenka Negrete, Carles Badenes, Carlos G. Rom\\'{a}n-Z\\'{u}\\~{n}iga, Carolina Andonie, Catarina Aydar, Catherine Grier, Catherine Zucker, Chad Bender, Chervin Laporte, Christian Moni Bidin, Christian Nitschelm, Collin Dabbieri, Conner Scoresby, Conor Sayres, Consuelo Gonz\\'{a}lez \\'{A}vila, Daniela Fern\\'{a}ndez Rosso, Daniel Oravetz, Dan Long, Dan Maoz, Danny Horta, Dante Garcia, Dante Minniti, David Aguilar, David L. Nidever, David W Hogg, Delvin Demke, Dhanesh Krishnarao, Diogo Souto, Dmitry Bizyaev, Dominika Wylezalek, Donald P. Schneider, Dong-Woo Kim, Elena D'Onghia, Eleonora Zari, Emily J. Griffith, Emma Galligan, Emma Tasso, Esra Bulbul, Ethan Driscoll, Eva K. Grebel, Evelyn J. Johnston, Evgeniya Egorova, Fabian Scheuermann, Facundo P\\'{e}rez Paolino, F. Besser, Fernanda Milla Castro, Francesco di Mille, Franz E. Bauer, Gagik Tovmasian, Gail Zasowski, Gautham Adamane Pallathadka, Greique A. Valk, Grisha Zeltyn, Guangquan Zeng, Guilherme Limberg, Guillermo A. Blanc, Guy S. Stringfellow, Hector Javier Ibarra-Medel, Hillary Diane Andales, Igor Chilingarian, Igor Zinchenko, Ilija Medan, Irene Cruz-Gonzalez, Ivan Katkov, Ivan Lacerna, Jaco Brink, Jaime I. Villase\\~{n}or, James Aird, James W. Davidson Jr., James W. Johnson, Jamie Tayar, Javier Serna, Jennifer Johnson, Jeremy Darling, J. Hern\\'{a}ndez, Jiadong Li, Jianhui Lian, Jichen Zhang, Jingkun Zhao, Jinyoung Serena Kim, J. J. Hermes, Jo Bovy, Joel R. Brownstein, Johanna M\\\"{u}ller-Horn, John C. Wilson, John Donor, Joleen K. Carlberg, Jonah M. Otto, Jonathan C. Bird, Jonathan C. Tan, Jonathan R. Trump, Jon Holtzman, Jorge K. Barrera-Ballesteros, Jos\\'{e} Eduardo M\\'{e}ndez Delgado, Jos\\'{e} G. Fern\\'{a}ndez-Trincado, Joseph Gelfand, Joseph N. Burchett, Jos\\'{e} S\\'{a}nchez-Gallego, Juan Daniel Gonzalez Ruiz, Julie Imig, Julio Chanam\\'{e}, Juna A. Kollmeier, Junqiang Ge, Kaike Pan, Kareem El-Badry, Kathryn Kreckel, Katie Grabowski, Kayvon Sharifi, Keith Hawkins, Keith Horne, Keivan Stassun, Kevin C. Schlaufman, Kevin McKinnon, Knox Long, Leah Peterson, Leslie M. Morales, Lesly Casta\\~{n}eda-Carlos, Leticia Carigi, Liam Dubay, Liliana Flores, Lorena Hern\\'{a}ndez-Garc\\'{i}a, Lucas M. Seaton, Luciano Vargas-Herrera, Luis Daniel Serrano F\\'{e}lix, Madeleine McKenzie, Madeline Lucey, Manuchehr Taghizadeh-Popp, Mara Salvato, Marc Pinsonneault, Maren Cosens, Mariia Demianenko, Marina Kounkel, Mary Kaldor, Maryum Sayeed, Matthias Kluge, Matthias Steinmetz, Maximilian H\\\"{a}berle, Megan C. Davis, Melissa Ness, Michael Eracleous, Michelle A. Berg, Mirko Krumpe, M. Jordan Raddick, M. Katy Rodriguez Wimberly, M. L. Mart\\'{i}nez-Aldama, Mohammed Iddrisu Nlowie, Moire K. M. Prescott, Mojgan Aghakhanloo, Mon\\'{i}ca A Villa Durango, Nadia Zakamska, Nadiia Pulatova, Natalie R. Myers, Natalie Ulloa, Natascha Sattler, Nathan De Lee, Niall Deacon, Nicholas Troup, Nicola Pietro Gentile Fusillo, Nimisha Kumari, Niv Drory, \\'{O}. Jim\\'{e}nez-Arranz, Oleg Egorov, Pablo Garc\\'{i}a, Pablo Vera, Paloma Guetzoyan, Paola Rodr\\'{i}guez Hidalgo, Patricio Jones, Patrick B. Hall, Paula Jofre, Paula Silva, Paul J. Green, Peter Frinchaboy, Peter J. Smith, Pierre Thibodeaux, Pramod Gupta, Pranavi Hiremath, Priyanka Chakraborty, Qian Yang, Qiaoya Wu, Rachel Lee McClure, Ralf Klessen, Ravi Sankrit, Renbin Yan, Ricardo L\\'{o}pez Valdivia, Robert E. Butler, Rodolfo de J. Zerme\\~{n}o, Rodrigo Sandoval-Orozco, Roeland P. van der Marel, Sandro Villanova, Sarah Loebman, Sarah Tuttle, Saroon Sasi, Saskia Hekker, Scott F. Anderson, SDSS Collaboration, Sean D. Lam, Sean Morrison, Sebastian Demasi, Sebasti\\'{a}n F. S\\'{a}nchez, Sebastien Lepine, Serat Mahmud Saad, Sergey Khoperskov, Shannon Neilson, Shir Aviram, Simon C. O. Glover, Sorya Lambert, Stefan Arseneau, Stephanie Monty, Steven Raymond Majewski, Szabolcs M\\'{e}sz\\'{a}ros, Takamitsu Miyaji, Tawny Sit, Thomas Hilder, Thomas Kupfer, Timothy McQuaid, T. M. Herbst, Tom Dwelly, Tony Wong, Valentina Bonilla Villalobos, Vedant Chandra, William Roster, W. N. Brandt, Xiang-Xiang Xue, Xiaohui Fan, Xin Liu, Xinyu Dai, Yang Huang, Ying-Yi Song, Yuan-Sen Ting, Yuxi (Lucy) Lu, Zachary Stone, Zach Way, Zezhou Zhu, Ziming Peng","submitted_at":"2026-07-28T18:00:39Z","abstract_excerpt":"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"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.26149","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2607.26149/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}