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, 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, Pranavi Hiremath, David W Hogg, Jon Holtzman, Keith Horne, Danny Horta, Yang Huang, Maximilian Häberle, Hector Javier Ibarra-Medel, Julie Imig, Alex Ji, Ó. Jiménez-Arranz, Paula Jofre, James W. Johnson, Jennifer Johnson, Evelyn J. Johnston, Patricio Jones, Amy M. Jones, Mary Kaldor, Amir Kalechman, Ivan Katkov, Sergey Khoperskov, Dong-Woo Kim, Jinyoung Serena Kim, Ralf Klessen, Matthias Kluge, Anton M. Koekemoer, Juna A. Kollmeier, Marina Kounkel, Kathryn Kreckel, Dhanesh Krishnarao, Mirko Krumpe, Nimisha Kumari, Thomas Kupfer, Ivan Lacerna, Sean D. Lam, Sorya Lambert, Chervin Laporte, Sebastien Lepine, Jiadong Li, Bowen Li, Jianhui Lian, Guilherme Limberg, Xin Liu, Sarah Loebman, Dan Long, Knox Long, Yuxi, Lu, Madeline Lucey, Alejandra Z. Lugo-Aranda, Steven Raymond Majewski, Dan Maoz, M. L. Martínez-Aldama, Rachel Lee McClure, Madeleine McKenzie, Kevin McKinnon, Timothy McQuaid, Ilija Medan, Alfredo J. Mejía-Narváez, Andrea Merloni, Szabolcs Mészáros, Dante Minniti, Takamitsu Miyaji, Stephanie Monty, Leslie M. Morales, Sean Morrison, Adam Moss, Johanna Müller-Horn, Natalie R. Myers, C. Alenka Negrete, Shannon Neilson, Melissa Ness, David L. Nidever, Christian Nitschelm, Mohammed Iddrisu Nlowie, Daniel Oravetz, Audrey Oravetz, Jonah M. Otto, Gautham Adamane Pallathadka, Kaike Pan, Facundo Pérez Paolino, Ziming Peng, Leah Peterson, Marc Pinsonneault, Anastasiia Plotnikova, Moire K. M. Prescott, Adrian M. Price-Whelan, Nadiia Pulatova, M. Jordan Raddick, Amy L. Rankine, Paola Rodríguez Hidalgo, M. Katy Rodriguez Wimberly, A. Roman-Lopes, Carlos G. Román-Zúñiga, Daniela Fernández Rosso, William Roster, Serat Mahmud Saad, Mara Salvato, Sebastián F. Sánchez, Andreas A. C. Sander, Rodrigo Sandoval-Orozco, Ravi Sankrit, Saroon Sasi, Natascha Sattler, Andrew K. Saydjari, Maryum Sayeed, Conor Sayres, Fabian Scheuermann, Kevin C. Schlaufman, Donald P. Schneider, Axel Schwope, Conner Scoresby, Lucas M. Seaton, Javier Serna, Kayvon Sharifi, Allyson Sheffield, Paula Silva, Amrita Singh, Amaya Sinha, Tawny Sit, Peter J. Smith, Ying-Yi Song, Diogo Souto, Keivan Stassun, Matthias Steinmetz, Zachary Stone, Alexander Stone-Martinez, Guy S. Stringfellow, Amelia Stutz, José Sánchez-Gallego, Manuchehr Taghizadeh-Popp, Jonathan C. Tan, Emma Tasso, Jamie Tayar, Aniruddha R. Thakar, Pierre Thibodeaux, Yuan-Sen Ting, Andrew Tkachenko, Gagik Tovmasian, Benny Trakhtenbrot, José G. Fernández-Trincado, Nicholas Troup, Jonathan R. Trump, Sarah Tuttle, Natalie Ulloa, Ana Sofía Uzsoy, Ricardo López Valdivia, Greique A. Valk, Roeland P. van der Marel, Luciano Vargas-Herrera, Pablo Vera, Valentina Bonilla Villalobos, Sandro Villanova, Jaime I. Villaseñor, Zach Way, Anne-Marie Weijmans, John C. Wilson, Aida Wofford, Tony Wong, Qiaoya Wu, Dominika Wylezalek, Xiang-Xiang Xue, Renbin Yan, Qian Yang, Nadia Zakamska, Abner Zapata, Eleonora Zari, Gail Zasowski, Grisha Zeltyn, Guangquan Zeng, Jichen Zhang, Jingkun Zhao, Zezhou Zhu, Igor Zinchenko, Catherine Zucker, Rodolfo de J. Zermeño
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.
