A SPHEREx Pipeline and Spectral Library for Ultracool Dwarfs
Fuente:
arXiv
Gespeichert in:
| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Veröffentlicht: |
2026
|
| Schlagworte: | |
| Online-Zugang: | |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1866917473941454848 |
|---|---|
| author | Gagné, Jonathan Faherty, Jacqueline K. Diaz, Azul Ruiz Coulombe, Louis-Philippe Bickle, Thomas P. Schneider, Adam C. Kirkpatrick, J. Davy Kuchner, Marc J. Meisner, Aaron M. Caselden, Dan Burgasser, Adam J. Casewell, Sarah Honaker, Easton J. Kiwy, Frank Marocco, Federico Gagliuffi, Daniella C. Bardalez Andersen, Nikolaj Stevnbak Arroyo, Lizzeth Ruiz Baller, Bruce Beaulieu, Paul Bell, John Bilsing, Martin Bohling, Troy K. Colin, Guillaume Colombo, Giovanni Deen, Sam Dereveanco, Alexandru Dixon, Kevin Luca, Hugo A. Durantini Flores, Deiby Franck, Christoph Fulvi, Christopher Gallmann, Michael Gantier, Jean Marc Glebov, Konstantin Gramaize, Léopold Hamlet, Leslie K. Hinckley, Ken Jablonski, Kevin Jałowiczor, Peter A. Kabatnik, Martin Kasprowitz, Peter Ly, K Martin, David W. Marzak, Naoufel McColgan, Alexander McEwan, Neil J. Michaels, Marianne N. Pendrill, William Perlin, Stéphane Pumphrey, Ben Rabe, James Raway, Henry Robledo, Walter Ruben Roser, David Roy, Animesh Sainio, Arttu Schindler, Vincent Schonau, Manfred Schümann, Jö rg Selg-Mann, Karl Serio, Andrea Smith, Patrick Stenner, Andres Tanner, Christopher Thévenot, Melina Thakur, Vinod Guerrero, Mayahuel Torres Ventura, Maurizio Voloshin, Nikita V. Walla, Jim Wȩdracki, Zbigniew Weyandt, Bailey Wilhite, Breck Zitouni, Spartacus |
| author_facet | Gagné, Jonathan Faherty, Jacqueline K. Diaz, Azul Ruiz Coulombe, Louis-Philippe Bickle, Thomas P. Schneider, Adam C. Kirkpatrick, J. Davy Kuchner, Marc J. Meisner, Aaron M. Caselden, Dan Burgasser, Adam J. Casewell, Sarah Honaker, Easton J. Kiwy, Frank Marocco, Federico Gagliuffi, Daniella C. Bardalez Andersen, Nikolaj Stevnbak Arroyo, Lizzeth Ruiz Baller, Bruce Beaulieu, Paul Bell, John Bilsing, Martin Bohling, Troy K. Colin, Guillaume Colombo, Giovanni Deen, Sam Dereveanco, Alexandru Dixon, Kevin Luca, Hugo A. Durantini Flores, Deiby Franck, Christoph Fulvi, Christopher Gallmann, Michael Gantier, Jean Marc Glebov, Konstantin Gramaize, Léopold Hamlet, Leslie K. Hinckley, Ken Jablonski, Kevin Jałowiczor, Peter A. Kabatnik, Martin Kasprowitz, Peter Ly, K Martin, David W. Marzak, Naoufel McColgan, Alexander McEwan, Neil J. Michaels, Marianne N. Pendrill, William Perlin, Stéphane Pumphrey, Ben Rabe, James Raway, Henry Robledo, Walter Ruben Roser, David Roy, Animesh Sainio, Arttu Schindler, Vincent Schonau, Manfred Schümann, Jö rg Selg-Mann, Karl Serio, Andrea Smith, Patrick Stenner, Andres Tanner, Christopher Thévenot, Melina Thakur, Vinod Guerrero, Mayahuel Torres Ventura, Maurizio Voloshin, Nikita V. Walla, Jim Wȩdracki, Zbigniew Weyandt, Bailey Wilhite, Breck Zitouni, Spartacus |
| contents | We present a Python spectrophotometry extraction tool tailored for fast-moving point sources detected in the SPHEREx mission, and use it to construct a set of 0.75-5.0 $μ$m low-resolution ($λ/Δλ\sim 50$) spectrophotometry data products based on the SPHEREx Quick Release 2 (QR2) for a set of 6003 L0-Y1 ultracool dwarfs: 2050 known ultracool dwarfs, 3008 known photometric ultracool dwarf candidates, and 947 newly identified ultracool dwarfs. This work more than doubles the number of ultracool dwarfs with spectroscopy, from 3449 to 7402. We provide SPHEREx templates for each spectral subtype and a set of tools to assign automated spectral types. The QR2 data release generates spectrophotometry with an average signal-to-noise per spectral channel above $\sim$10 for most objects with WISE W2 magnitudes of 14.0 mag and brighter. The compiled data set is made available publicly at https://mocadb.ca, where new spectral compilations from future data releases will also be made available as they are published. These new data provide a significant increase in the number of substellar objects for which the 2.4-5.0 $μ$m window is now accessible, making it possible to probe important molecular chemistry of key CNOS-bearing species for the coolest brown dwarfs. We flag 2668 ultracool dwarfs as candidate young brown dwarfs, 250 as candidate subdwarfs, and 865 as possibly otherwise peculiar for future investigation. The SPIFF library presented here opens the doors to efficient confirmation of candidate substellar objects and follow-up studies of population-level atmospheric properties of cold brown dwarfs. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_22012 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | A SPHEREx Pipeline and Spectral Library for Ultracool Dwarfs Gagné, Jonathan Faherty, Jacqueline K. Diaz, Azul Ruiz Coulombe, Louis-Philippe Bickle, Thomas P. Schneider, Adam C. Kirkpatrick, J. Davy Kuchner, Marc J. Meisner, Aaron M. Caselden, Dan Burgasser, Adam J. Casewell, Sarah Honaker, Easton J. Kiwy, Frank Marocco, Federico Gagliuffi, Daniella C. Bardalez Andersen, Nikolaj Stevnbak Arroyo, Lizzeth Ruiz Baller, Bruce Beaulieu, Paul Bell, John Bilsing, Martin Bohling, Troy K. Colin, Guillaume Colombo, Giovanni Deen, Sam Dereveanco, Alexandru Dixon, Kevin Luca, Hugo A. Durantini Flores, Deiby Franck, Christoph Fulvi, Christopher Gallmann, Michael Gantier, Jean Marc Glebov, Konstantin Gramaize, Léopold Hamlet, Leslie K. Hinckley, Ken Jablonski, Kevin Jałowiczor, Peter A. Kabatnik, Martin Kasprowitz, Peter Ly, K Martin, David W. Marzak, Naoufel McColgan, Alexander McEwan, Neil J. Michaels, Marianne N. Pendrill, William Perlin, Stéphane Pumphrey, Ben Rabe, James Raway, Henry Robledo, Walter Ruben Roser, David Roy, Animesh Sainio, Arttu Schindler, Vincent Schonau, Manfred Schümann, Jö rg Selg-Mann, Karl Serio, Andrea Smith, Patrick Stenner, Andres Tanner, Christopher Thévenot, Melina Thakur, Vinod Guerrero, Mayahuel Torres Ventura, Maurizio Voloshin, Nikita V. Walla, Jim Wȩdracki, Zbigniew Weyandt, Bailey Wilhite, Breck Zitouni, Spartacus Solar and Stellar Astrophysics Earth and Planetary Astrophysics Instrumentation and Methods for Astrophysics We present a Python spectrophotometry extraction tool tailored for fast-moving point sources detected in the SPHEREx mission, and use it to construct a set of 0.75-5.0 $μ$m low-resolution ($λ/Δλ\sim 50$) spectrophotometry data products based on the SPHEREx Quick Release 2 (QR2) for a set of 6003 L0-Y1 ultracool dwarfs: 2050 known ultracool dwarfs, 3008 known photometric ultracool dwarf candidates, and 947 newly identified ultracool dwarfs. This work more than doubles the number of ultracool dwarfs with spectroscopy, from 3449 to 7402. We provide SPHEREx templates for each spectral subtype and a set of tools to assign automated spectral types. The QR2 data release generates spectrophotometry with an average signal-to-noise per spectral channel above $\sim$10 for most objects with WISE W2 magnitudes of 14.0 mag and brighter. The compiled data set is made available publicly at https://mocadb.ca, where new spectral compilations from future data releases will also be made available as they are published. These new data provide a significant increase in the number of substellar objects for which the 2.4-5.0 $μ$m window is now accessible, making it possible to probe important molecular chemistry of key CNOS-bearing species for the coolest brown dwarfs. We flag 2668 ultracool dwarfs as candidate young brown dwarfs, 250 as candidate subdwarfs, and 865 as possibly otherwise peculiar for future investigation. The SPIFF library presented here opens the doors to efficient confirmation of candidate substellar objects and follow-up studies of population-level atmospheric properties of cold brown dwarfs. |
| title | A SPHEREx Pipeline and Spectral Library for Ultracool Dwarfs |
| topic | Solar and Stellar Astrophysics Earth and Planetary Astrophysics Instrumentation and Methods for Astrophysics |
| url | https://arxiv.org/abs/2604.22012 |