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| Format: | Preprint |
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2026
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| Accès en ligne: | https://arxiv.org/abs/2601.12611 |
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| author | Hall, Xander J. Palmese, Antonella BenZvi, Segev Banovetz, John O'Connor, Brendan Hu, Lei Hammerstein, Erica Amsellem, Ariel Aguilar, Jessica Nicole Ahlen, Steven Bailey, Steven Bianchi, Davide Brooks, David Claybaugh, Todd Cuceu, Andrei Dawson, Kyle de la Macorra, Axel Della Costa, John Dey, Arjun Doel, Peter Ferraro, Simone Font-Ribera, Andreu Forero-Romero, Jaime E. Gaztanaga, Enrique Gontcho, Satya Gontcho A Gonzalez-Morales, Alma Xochitl Graur, Or Gutierrez, Gaston Ishak, Mustapha Jimenez, Jorge Joyce, Dick Juneau, Stephanie Kremin, Anthony Lahav, Ofer Lamman, Claire Landriau, Martin Guillou, Laurent Le Leauthaud, Alexie Levi, Michael Manera, Marc Meisner, Aaron Miquel, Ramon Moustakas, John Myers, Adam Nadathur, Seshadri Percival, Will Poppett, Claire Perez-Rafols, Ignasi Prada, Francisco Rossi, Graziano Sanchez, Eusebio Schlafly, Edward Schlegel, David Schubnell, Michael Sprayberry, David Tarle, Gregory Weaver, Benjamin Alan Zhou, Rongpu Zou, Hu |
| author_facet | Hall, Xander J. Palmese, Antonella BenZvi, Segev Banovetz, John O'Connor, Brendan Hu, Lei Hammerstein, Erica Amsellem, Ariel Aguilar, Jessica Nicole Ahlen, Steven Bailey, Steven Bianchi, Davide Brooks, David Claybaugh, Todd Cuceu, Andrei Dawson, Kyle de la Macorra, Axel Della Costa, John Dey, Arjun Doel, Peter Ferraro, Simone Font-Ribera, Andreu Forero-Romero, Jaime E. Gaztanaga, Enrique Gontcho, Satya Gontcho A Gonzalez-Morales, Alma Xochitl Graur, Or Gutierrez, Gaston Ishak, Mustapha Jimenez, Jorge Joyce, Dick Juneau, Stephanie Kremin, Anthony Lahav, Ofer Lamman, Claire Landriau, Martin Guillou, Laurent Le Leauthaud, Alexie Levi, Michael Manera, Marc Meisner, Aaron Miquel, Ramon Moustakas, John Myers, Adam Nadathur, Seshadri Percival, Will Poppett, Claire Perez-Rafols, Ignasi Prada, Francisco Rossi, Graziano Sanchez, Eusebio Schlafly, Edward Schlegel, David Schubnell, Michael Sprayberry, David Tarle, Gregory Weaver, Benjamin Alan Zhou, Rongpu Zou, Hu |
| contents | We present the first systematic spectroscopic observations of extragalactic transients from the Dark Energy Spectroscopic Instrument (DESI), as part of the DESI Transients Survey program. With 5,000 fibers and an ${\sim} 8$ deg$^2$ field of view, we exploit DESI as a machine for the discovery and classification of transients. We present transient classifications from archival DESI data in Data Releases 1 and 2, relying on a combination of a secondary target program and serendipitous observations. We also present observations from the first 6 months of the DESI spare fiber program dedicated to transients. The program is run in coordination with a dedicated DECam time-domain survey, serving as a pathfinder for what we will be able to achieve in conjunction with the Rubin Observatory Legacy Survey of Space and Time (LSST). We classify over 250 transients, of which the majority were previously unclassified. The sample comprises thermonuclear and core-collapse supernovae and tidal disruption events (TDEs), including a TDE observed before its discovery in imaging. We demonstrate DESI's ability to classify a population of faint transients down to $r\sim 22.5$ mag during main survey operations, with negligible impacts on DESI's main observations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_12611 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | The DESI Transients Survey: Legacy Classifications and Methodology Hall, Xander J. Palmese, Antonella BenZvi, Segev Banovetz, John O'Connor, Brendan Hu, Lei Hammerstein, Erica Amsellem, Ariel Aguilar, Jessica Nicole Ahlen, Steven Bailey, Steven Bianchi, Davide Brooks, David Claybaugh, Todd Cuceu, Andrei Dawson, Kyle de la Macorra, Axel Della Costa, John Dey, Arjun Doel, Peter Ferraro, Simone Font-Ribera, Andreu Forero-Romero, Jaime E. Gaztanaga, Enrique Gontcho, Satya Gontcho A Gonzalez-Morales, Alma Xochitl Graur, Or Gutierrez, Gaston Ishak, Mustapha Jimenez, Jorge Joyce, Dick Juneau, Stephanie Kremin, Anthony Lahav, Ofer Lamman, Claire Landriau, Martin Guillou, Laurent Le Leauthaud, Alexie Levi, Michael Manera, Marc Meisner, Aaron Miquel, Ramon Moustakas, John Myers, Adam Nadathur, Seshadri Percival, Will Poppett, Claire Perez-Rafols, Ignasi Prada, Francisco Rossi, Graziano Sanchez, Eusebio Schlafly, Edward Schlegel, David Schubnell, Michael Sprayberry, David Tarle, Gregory Weaver, Benjamin Alan Zhou, Rongpu Zou, Hu High Energy Astrophysical Phenomena We present the first systematic spectroscopic observations of extragalactic transients from the Dark Energy Spectroscopic Instrument (DESI), as part of the DESI Transients Survey program. With 5,000 fibers and an ${\sim} 8$ deg$^2$ field of view, we exploit DESI as a machine for the discovery and classification of transients. We present transient classifications from archival DESI data in Data Releases 1 and 2, relying on a combination of a secondary target program and serendipitous observations. We also present observations from the first 6 months of the DESI spare fiber program dedicated to transients. The program is run in coordination with a dedicated DECam time-domain survey, serving as a pathfinder for what we will be able to achieve in conjunction with the Rubin Observatory Legacy Survey of Space and Time (LSST). We classify over 250 transients, of which the majority were previously unclassified. The sample comprises thermonuclear and core-collapse supernovae and tidal disruption events (TDEs), including a TDE observed before its discovery in imaging. We demonstrate DESI's ability to classify a population of faint transients down to $r\sim 22.5$ mag during main survey operations, with negligible impacts on DESI's main observations. |
| title | The DESI Transients Survey: Legacy Classifications and Methodology |
| topic | High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2601.12611 |