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The Backup Program of the Dark Energy Spectroscopic Instrument's Milky Way Survey

Fuente: arXiv

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Autori principali:	Dey, Arjun, Koposov, Sergey E., Najita, Joan R., Cooper, Andrew P., Gänsicke, B. T., Myers, Adam D., Raichoor, A., Eisenstein, Daniel J., Schlafly, E. F., Prieto, C. Allende, Silva, Leandro Beraldo e, Li, Ting S., Valluri, M., Juneau, Stéphanie, Lambert, Mika, Li, S., Thomas, Guillaume F., Wang, Wenting, Riley, Alexander H., Kizhuprakkat, N., Aguilar, J., Ahlen, S., Bailey, S., Bianchi, D., Brooks, D., Claybaugh, T., Cuceu, A., de la Macorra, A., Della Costa, J., Dey, Biprateep, Doel, P., Font-Ribera, A., Forero-Romero, J. E., Gaztañaga, E., Gontcho, S. Gontcho A, Gutierrez, G., Guy, J., Hahn, C., Honscheid, K., Ishak, M., Jimenez, J., Kehoe, R., Kirkby, D., Kisner, T., Kremin, A., Lamman, C., Landriau, M., Guillou, L. Le, Levi, M. E., Manera, M., Martini, P., Meisner, A., Miquel, R., Moustakas, J., Nadathur, S., Palanque-Delabrouille, N., Percival, W. J., Prada, F., Pérez-Ràfols, I., Rossi, G., Sanchez, E., Schubnell, M., Silber, J., Sprayberry, D., Tarlé, G., Weaver, B. A., Wechsler, R. H., Zhou, R., Zou, H.
Natura:	Preprint
Pubblicazione:	2025
Soggetti:	Solar and Stellar Astrophysics Astrophysics of Galaxies Instrumentation and Methods for Astrophysics
Accesso online:	Acceder al recurso
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_version_	1866909620888403968
author	Dey, Arjun Koposov, Sergey E. Najita, Joan R. Cooper, Andrew P. Gänsicke, B. T. Myers, Adam D. Raichoor, A. Eisenstein, Daniel J. Schlafly, E. F. Prieto, C. Allende Silva, Leandro Beraldo e Li, Ting S. Valluri, M. Juneau, Stéphanie Lambert, Mika Li, S. Thomas, Guillaume F. Wang, Wenting Riley, Alexander H. Kizhuprakkat, N. Aguilar, J. Ahlen, S. Bailey, S. Bianchi, D. Brooks, D. Claybaugh, T. Cuceu, A. de la Macorra, A. Della Costa, J. Dey, Biprateep Doel, P. Font-Ribera, A. Forero-Romero, J. E. Gaztañaga, E. Gontcho, S. Gontcho A Gutierrez, G. Guy, J. Hahn, C. Honscheid, K. Ishak, M. Jimenez, J. Kehoe, R. Kirkby, D. Kisner, T. Kremin, A. Lamman, C. Landriau, M. Guillou, L. Le Levi, M. E. Manera, M. Martini, P. Meisner, A. Miquel, R. Moustakas, J. Nadathur, S. Palanque-Delabrouille, N. Percival, W. J. Prada, F. Pérez-Ràfols, I. Rossi, G. Sanchez, E. Schubnell, M. Silber, J. Sprayberry, D. Tarlé, G. Weaver, B. A. Wechsler, R. H. Zhou, R. Zou, H.
author_facet	Dey, Arjun Koposov, Sergey E. Najita, Joan R. Cooper, Andrew P. Gänsicke, B. T. Myers, Adam D. Raichoor, A. Eisenstein, Daniel J. Schlafly, E. F. Prieto, C. Allende Silva, Leandro Beraldo e Li, Ting S. Valluri, M. Juneau, Stéphanie Lambert, Mika Li, S. Thomas, Guillaume F. Wang, Wenting Riley, Alexander H. Kizhuprakkat, N. Aguilar, J. Ahlen, S. Bailey, S. Bianchi, D. Brooks, D. Claybaugh, T. Cuceu, A. de la Macorra, A. Della Costa, J. Dey, Biprateep Doel, P. Font-Ribera, A. Forero-Romero, J. E. Gaztañaga, E. Gontcho, S. Gontcho A Gutierrez, G. Guy, J. Hahn, C. Honscheid, K. Ishak, M. Jimenez, J. Kehoe, R. Kirkby, D. Kisner, T. Kremin, A. Lamman, C. Landriau, M. Guillou, L. Le Levi, M. E. Manera, M. Martini, P. Meisner, A. Miquel, R. Moustakas, J. Nadathur, S. Palanque-Delabrouille, N. Percival, W. J. Prada, F. Pérez-Ràfols, I. Rossi, G. Sanchez, E. Schubnell, M. Silber, J. Sprayberry, D. Tarlé, G. Weaver, B. A. Wechsler, R. H. Zhou, R. Zou, H.
contents	The Milky Way Backup Program (MWBP), a survey currently underway with the Dark Energy Spectroscopic Instrument (DESI) on the Nicholas U. Mayall 4-m Telescope, works at the margins of the DESI Main surveys to obtain spectra of millions of additional stars from the Gaia catalog. Efficiently utilizing twilight times (<18 deg) and poor weather conditions, the MWBP extends the range of stellar sources studied to both brighter magnitudes and lower Galactic latitude and declination than the stars studied in DESI's Main Milky Way Survey. While the MWBP prioritizes candidate giant stars selected from the Gaia catalog (using color and parallax criteria), it also includes an unbiased sample of bright stars (i.e., 11.2 < G < 16 mag) as well as fainter sources (to G < 19 mag). As of March 1, 2025, the survey had obtained spectra of ~7 million stars, approximately 1.2 million of which are included in the DESI Data Release 1. The full survey, when completed, will cover an area of more than 21,000 square degrees and include approximately 10 million Gaia sources, roughly equal to the number of stellar spectra obtained through the DESI Main Survey, while only utilizing <9% of all DESI observing time.
format	Preprint
id	arxiv_https___arxiv_org_abs_2505_17230
institution	arXiv
publishDate	2025
record_format	arxiv
spellingShingle	The Backup Program of the Dark Energy Spectroscopic Instrument's Milky Way Survey Dey, Arjun Koposov, Sergey E. Najita, Joan R. Cooper, Andrew P. Gänsicke, B. T. Myers, Adam D. Raichoor, A. Eisenstein, Daniel J. Schlafly, E. F. Prieto, C. Allende Silva, Leandro Beraldo e Li, Ting S. Valluri, M. Juneau, Stéphanie Lambert, Mika Li, S. Thomas, Guillaume F. Wang, Wenting Riley, Alexander H. Kizhuprakkat, N. Aguilar, J. Ahlen, S. Bailey, S. Bianchi, D. Brooks, D. Claybaugh, T. Cuceu, A. de la Macorra, A. Della Costa, J. Dey, Biprateep Doel, P. Font-Ribera, A. Forero-Romero, J. E. Gaztañaga, E. Gontcho, S. Gontcho A Gutierrez, G. Guy, J. Hahn, C. Honscheid, K. Ishak, M. Jimenez, J. Kehoe, R. Kirkby, D. Kisner, T. Kremin, A. Lamman, C. Landriau, M. Guillou, L. Le Levi, M. E. Manera, M. Martini, P. Meisner, A. Miquel, R. Moustakas, J. Nadathur, S. Palanque-Delabrouille, N. Percival, W. J. Prada, F. Pérez-Ràfols, I. Rossi, G. Sanchez, E. Schubnell, M. Silber, J. Sprayberry, D. Tarlé, G. Weaver, B. A. Wechsler, R. H. Zhou, R. Zou, H. Solar and Stellar Astrophysics Astrophysics of Galaxies Instrumentation and Methods for Astrophysics The Milky Way Backup Program (MWBP), a survey currently underway with the Dark Energy Spectroscopic Instrument (DESI) on the Nicholas U. Mayall 4-m Telescope, works at the margins of the DESI Main surveys to obtain spectra of millions of additional stars from the Gaia catalog. Efficiently utilizing twilight times (<18 deg) and poor weather conditions, the MWBP extends the range of stellar sources studied to both brighter magnitudes and lower Galactic latitude and declination than the stars studied in DESI's Main Milky Way Survey. While the MWBP prioritizes candidate giant stars selected from the Gaia catalog (using color and parallax criteria), it also includes an unbiased sample of bright stars (i.e., 11.2 < G < 16 mag) as well as fainter sources (to G < 19 mag). As of March 1, 2025, the survey had obtained spectra of ~7 million stars, approximately 1.2 million of which are included in the DESI Data Release 1. The full survey, when completed, will cover an area of more than 21,000 square degrees and include approximately 10 million Gaia sources, roughly equal to the number of stellar spectra obtained through the DESI Main Survey, while only utilizing <9% of all DESI observing time.
title	The Backup Program of the Dark Energy Spectroscopic Instrument's Milky Way Survey
topic	Solar and Stellar Astrophysics Astrophysics of Galaxies Instrumentation and Methods for Astrophysics
url	https://arxiv.org/abs/2505.17230