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

  • Authors: Arjun Dey, Sergey E. Koposov, Joan R. Najita, Andrew P. Cooper, B. T. Gänsicke, Adam D. Myers, A. Raichoor, Daniel J. Eisenstein, E. F. Schlafly, D. Schlegel, C. Allende Prieto, Leandro Beraldo e Silva, Ting S. Li, M. Valluri, Stéphanie Juneau, Mika Lambert, S. Li, Guillaume F. Thomas, Wenting Wang, Alexander H. Riley, N. Kizhuprakkat, J. Aguilar, S. Ahlen, S. Bailey, D. Bianchi, D. Brooks, T. Claybaugh, A. Cuceu, A. de la Macorra, J. Della Costa, Biprateep Dey, P. Doel, A. Font-Ribera, J. E. Forero-Romero, E. Gaztañaga, S. Gontcho A Gontcho, G. Gutierrez, J. Guy, C. Hahn, K. Honscheid, M. Ishak, J. Jimenez, R. Kehoe, D. Kirkby, T. Kisner, A. Kremin, C. Lamman, M. Landriau, L. Le Guillou, M. E. Levi, M. Manera, P. Martini, A. Meisner, R. Miquel, J. Moustakas, S. Nadathur, N. Palanque-Delabrouille, W. J. Percival, I. Pérez-Ràfols, F. Prada, G. Rossi, E. Sanchez, M. Schubnell, J. Silber, D. Sprayberry, G. Tarlé, B. A. Weaver, R. H. Wechsler, R. Zhou, H. Zou

Arjun Dey et al 2026 The Astronomical Journal 171 .

  • Provider: AAS Journals

Caption: Figure 2.

The Gaia G-band magnitude distributions of the spectroscopically observed targets in the MWBP (black histogram) and the MWS (red dashed histogram). The subset of stars with radial velocity measurements from Gaia Radial Velocity Spectrometer are shown by the shaded green histogram. The DESI histograms are constructed from the targets observed during (approximately) the first three years of survey operations and which will be included in the second DESI Data Release (DR2).

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