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Main Authors: DESI Collaboration, Adame, A. G., Aguilar, J., Ahlen, S., Alam, S., Aldering, G., Alexander, D. M., Alfarsy, R., Prieto, C. Allende, Alvarez, M., Alves, O., Anand, A., Andrade-Oliveira, F., Armengaud, E., Asorey, J., Avila, S., Aviles, A., Bailey, S., Balaguera-Antolínez, A., Ballester, O., Baltay, C., Bault, A., Bautista, J., Behera, J., Beltran, S. F., BenZvi, S., Silva, L. Beraldo e, Bermejo-Climent, J. R., Berti, A., Besuner, R., Beutler, F., Bianchi, D., Blake, C., Blum, R., Bolton, A. S., Brieden, S., Brodzeller, A., Brooks, D., Brown, Z., Buckley-Geer, E., Burtin, E., Cabayol-Garcia, L., Cai, Z., Canning, R., Cardiel-Sas, L., Rosell, A. Carnero, Castander, F. J., Cervantes-Cota, J. L., Chabanier, S., Chaussidon, E., Chaves-Montero, J., Chen, S., Chuang, C., Claybaugh, T., Cole, S., Cooper, A. P., Cuceu, A., Davis, T. M., Dawson, K., de Belsunce, R., de la Cruz, R., de la Macorra, A., de Mattia, A., Demina, R., Demirbozan, U., DeRose, J., Dey, A., Dey, B., Dhungana, G., Ding, J., Ding, Z., Doel, P., Doshi, R., Douglass, K., Edge, A., Eftekharzadeh, S., Eisenstein, D. J., Elliott, A., Escoffier, S., Fagrelius, P., Fan, X., Fanning, K., Fawcett, V. A., Ferraro, S., Ereza, J., Flaugher, B., Font-Ribera, A., Forero-Sánchez, D., Forero-Romero, J. E., Frenk, C. S., Gänsicke, B. T., García, L. Á., García-Bellido, J., Garcia-Quintero, C., Garrison, L. H., Gil-Marín, H., Golden-Marx, J., Gontcho, S. Gontcho A, Gonzalez-Morales, A. X., Gonzalez-Perez, V., Gordon, C., Graur, O., Green, D., Gruen, D., Guy, J., Hadzhiyska, B., Hahn, C., Han, J. J., Hanif, M. M. S, Herrera-Alcantar, H. K., Honscheid, K., Hou, J., Howlett, C., Huterer, D., Iršič, V., Ishak, M., Jana, A., Jiang, L., Jimenez, J., Jing, Y. P., Joudaki, S., Joyce, R., Jullo, E., Juneau, S., Kizhuprakkat, N., Karaçaylı, N. G., Karim, T., Kehoe, R., Kent, S., Khederlarian, A., Kim, S., Kirkby, D., Kisner, T., Kitaura, F., Kneib, J., Koposov, S. E., Kovács, A., Kremin, A., Krolewski, A., L'Huillier, B., Lahav, O., Lambert, A., Lamman, C., Lan, T. -W., Landriau, M., Lang, D., Lange, J. U., Lasker, J., Guillou, L. Le, Leauthaud, A., Levi, M. E., Li, T. S., Linder, E., Lyons, A., Magneville, C., Manera, M., Manser, C. J., Margala, D., Martini, P., McDonald, P., Medina, G. E., Medina-Varela, L., Meisner, A., Mena-Fernández, J., Meneses-Rizo, J., Mezcua, M., Miquel, R., Montero-Camacho, P., Moon, J., Moore, S., Moustakas, J., Mueller, E., Mundet, J., Muñoz-Gutiérrez, A., Myers, A. D., Nadathur, S., Napolitano, L., Neveux, R., Newman, J. A., Nie, J., Niz, G., Norberg, P., Noriega, H. E., Paillas, E., Palanque-Delabrouille, N., Palmese, A., Zhiwei, P., Parkinson, D., Penmetsa, S., Percival, W. J., Pérez-Fernández, A., Pérez-Ràfols, I., Pieri, M., Poppett, C., Porredon, A., Prada, F., Pucha, R., Raichoor, A., Ramírez-Pérez, C., Ramirez-Solano, S., Rashkovetskyi, M., Ravoux, C., Rocher, A., Rockosi, C., Ross, A. J., Rossi, G., Ruggeri, R., Ruhlmann-Kleider, V., Sabiu, C. G., Said, K., Saintonge, A., Samushia, L., Sanchez, E., Saulder, C., Schaan, E., Schlafly, E. F., Schlegel, D., Scholte, D., Schubnell, M., Seo, H., Shafieloo, A., Sharples, R., Sheu, W., Silber, J., Sinigaglia, F., Siudek, M., Slepian, Z., Smith, A., Sprayberry, D., Stephey, L., Suárez-Pérez, J., Sun, Z., Tan, T., Tarlé, G., Tojeiro, R., Ureña-López, L. A., Vaisakh, R., Valcin, D., Valdes, F., Valluri, M., Vargas-Magaña, M., Variu, A., Verde, L., Walther, M., Wang, B., Wang, M. S., Weaver, B. A., Weaverdyck, N., Wechsler, R. H., White, M., Xie, Y., Yang, J., Yèche, C., Yu, J., Yuan, S., Zhang, H., Zhang, Z., Zhao, C., Zheng, Z., Zhou, R., Zhou, Z., Zou, H., Zou, S., Zu, Y.
Format: Preprint
Published: 2023
Subjects:
Cosmology and Nongalactic Astrophysics
Online Access:https://arxiv.org/abs/2306.06307
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author DESI Collaboration
Adame, A. G.
Aguilar, J.
Ahlen, S.
Alam, S.
Aldering, G.
Alexander, D. M.
Alfarsy, R.
Prieto, C. Allende
Alvarez, M.
Alves, O.
Anand, A.
Andrade-Oliveira, F.
Armengaud, E.
Asorey, J.
Avila, S.
Aviles, A.
Bailey, S.
Balaguera-Antolínez, A.
Ballester, O.
Baltay, C.
Bault, A.
Bautista, J.
Behera, J.
Beltran, S. F.
BenZvi, S.
Silva, L. Beraldo e
Bermejo-Climent, J. R.
Berti, A.
Besuner, R.
Beutler, F.
Bianchi, D.
Blake, C.
Blum, R.
Bolton, A. S.
Brieden, S.
Brodzeller, A.
Brooks, D.
Brown, Z.
Buckley-Geer, E.
Burtin, E.
Cabayol-Garcia, L.
Cai, Z.
Canning, R.
Cardiel-Sas, L.
Rosell, A. Carnero
Castander, F. J.
Cervantes-Cota, J. L.
Chabanier, S.
Chaussidon, E.
Chaves-Montero, J.
Chen, S.
Chuang, C.
Claybaugh, T.
Cole, S.
Cooper, A. P.
Cuceu, A.
Davis, T. M.
Dawson, K.
de Belsunce, R.
de la Cruz, R.
de la Macorra, A.
de Mattia, A.
Demina, R.
Demirbozan, U.
DeRose, J.
Dey, A.
Dey, B.
Dhungana, G.
Ding, J.
Ding, Z.
Doel, P.
Doshi, R.
Douglass, K.
Edge, A.
Eftekharzadeh, S.
Eisenstein, D. J.
Elliott, A.
Escoffier, S.
Fagrelius, P.
Fan, X.
Fanning, K.
Fawcett, V. A.
Ferraro, S.
Ereza, J.
Flaugher, B.
Font-Ribera, A.
Forero-Sánchez, D.
Forero-Romero, J. E.
Frenk, C. S.
Gänsicke, B. T.
García, L. Á.
García-Bellido, J.
Garcia-Quintero, C.
Garrison, L. H.
Gil-Marín, H.
Golden-Marx, J.
Gontcho, S. Gontcho A
Gonzalez-Morales, A. X.
Gonzalez-Perez, V.
Gordon, C.
Graur, O.
Green, D.
Gruen, D.
Guy, J.
Hadzhiyska, B.
Hahn, C.
Han, J. J.
Hanif, M. M. S
Herrera-Alcantar, H. K.
Honscheid, K.
Hou, J.
Howlett, C.
Huterer, D.
Iršič, V.
Ishak, M.
Jana, A.
Jiang, L.
Jimenez, J.
Jing, Y. P.
Joudaki, S.
Joyce, R.
Jullo, E.
Juneau, S.
Kizhuprakkat, N.
Karaçaylı, N. G.
Karim, T.
Kehoe, R.
Kent, S.
Khederlarian, A.
Kim, S.
Kirkby, D.
Kisner, T.
Kitaura, F.
Kneib, J.
Koposov, S. E.
Kovács, A.
Kremin, A.
Krolewski, A.
L'Huillier, B.
Lahav, O.
Lambert, A.
Lamman, C.
Lan, T. -W.
Landriau, M.
Lang, D.
Lange, J. U.
Lasker, J.
Guillou, L. Le
Leauthaud, A.
Levi, M. E.
Li, T. S.
Linder, E.
Lyons, A.
Magneville, C.
Manera, M.
Manser, C. J.
Margala, D.
Martini, P.
McDonald, P.
Medina, G. E.
Medina-Varela, L.
Meisner, A.
Mena-Fernández, J.
Meneses-Rizo, J.
Mezcua, M.
Miquel, R.
Montero-Camacho, P.
Moon, J.
Moore, S.
Moustakas, J.
Mueller, E.
Mundet, J.
Muñoz-Gutiérrez, A.
Myers, A. D.
Nadathur, S.
Napolitano, L.
Neveux, R.
Newman, J. A.
Nie, J.
Niz, G.
Norberg, P.
Noriega, H. E.
Paillas, E.
Palanque-Delabrouille, N.
Palmese, A.
Zhiwei, P.
Parkinson, D.
Penmetsa, S.
Percival, W. J.
Pérez-Fernández, A.
Pérez-Ràfols, I.
Pieri, M.
Poppett, C.
Porredon, A.
Prada, F.
Pucha, R.
Raichoor, A.
Ramírez-Pérez, C.
Ramirez-Solano, S.
Rashkovetskyi, M.
Ravoux, C.
Rocher, A.
Rockosi, C.
Ross, A. J.
Rossi, G.
Ruggeri, R.
Ruhlmann-Kleider, V.
Sabiu, C. G.
Said, K.
Saintonge, A.
Samushia, L.
Sanchez, E.
Saulder, C.
Schaan, E.
Schlafly, E. F.
Schlegel, D.
Scholte, D.
Schubnell, M.
Seo, H.
Shafieloo, A.
Sharples, R.
Sheu, W.
Silber, J.
Sinigaglia, F.
Siudek, M.
Slepian, Z.
Smith, A.
Sprayberry, D.
Stephey, L.
Suárez-Pérez, J.
Sun, Z.
Tan, T.
Tarlé, G.
Tojeiro, R.
Ureña-López, L. A.
Vaisakh, R.
Valcin, D.
Valdes, F.
Valluri, M.
Vargas-Magaña, M.
Variu, A.
Verde, L.
Walther, M.
Wang, B.
Wang, M. S.
Weaver, B. A.
Weaverdyck, N.
Wechsler, R. H.
White, M.
Xie, Y.
Yang, J.
Yèche, C.
Yu, J.
Yuan, S.
Zhang, H.
Zhang, Z.
Zhao, C.
Zheng, Z.
Zhou, R.
Zhou, Z.
Zou, H.
Zou, S.
Zu, Y.
author_facet DESI Collaboration
Adame, A. G.
Aguilar, J.
Ahlen, S.
Alam, S.
Aldering, G.
Alexander, D. M.
Alfarsy, R.
Prieto, C. Allende
Alvarez, M.
Alves, O.
Anand, A.
Andrade-Oliveira, F.
Armengaud, E.
Asorey, J.
Avila, S.
Aviles, A.
Bailey, S.
Balaguera-Antolínez, A.
Ballester, O.
Baltay, C.
Bault, A.
Bautista, J.
Behera, J.
Beltran, S. F.
BenZvi, S.
Silva, L. Beraldo e
Bermejo-Climent, J. R.
Berti, A.
Besuner, R.
Beutler, F.
Bianchi, D.
Blake, C.
Blum, R.
Bolton, A. S.
Brieden, S.
Brodzeller, A.
Brooks, D.
Brown, Z.
Buckley-Geer, E.
Burtin, E.
Cabayol-Garcia, L.
Cai, Z.
Canning, R.
Cardiel-Sas, L.
Rosell, A. Carnero
Castander, F. J.
Cervantes-Cota, J. L.
Chabanier, S.
Chaussidon, E.
Chaves-Montero, J.
Chen, S.
Chuang, C.
Claybaugh, T.
Cole, S.
Cooper, A. P.
Cuceu, A.
Davis, T. M.
Dawson, K.
de Belsunce, R.
de la Cruz, R.
de la Macorra, A.
de Mattia, A.
Demina, R.
Demirbozan, U.
DeRose, J.
Dey, A.
Dey, B.
Dhungana, G.
Ding, J.
Ding, Z.
Doel, P.
Doshi, R.
Douglass, K.
Edge, A.
Eftekharzadeh, S.
Eisenstein, D. J.
Elliott, A.
Escoffier, S.
Fagrelius, P.
Fan, X.
Fanning, K.
Fawcett, V. A.
Ferraro, S.
Ereza, J.
Flaugher, B.
Font-Ribera, A.
Forero-Sánchez, D.
Forero-Romero, J. E.
Frenk, C. S.
Gänsicke, B. T.
García, L. Á.
García-Bellido, J.
Garcia-Quintero, C.
Garrison, L. H.
Gil-Marín, H.
Golden-Marx, J.
Gontcho, S. Gontcho A
Gonzalez-Morales, A. X.
Gonzalez-Perez, V.
Gordon, C.
Graur, O.
Green, D.
Gruen, D.
Guy, J.
Hadzhiyska, B.
Hahn, C.
Han, J. J.
Hanif, M. M. S
Herrera-Alcantar, H. K.
Honscheid, K.
Hou, J.
Howlett, C.
Huterer, D.
Iršič, V.
Ishak, M.
Jana, A.
Jiang, L.
Jimenez, J.
Jing, Y. P.
Joudaki, S.
Joyce, R.
Jullo, E.
Juneau, S.
Kizhuprakkat, N.
Karaçaylı, N. G.
Karim, T.
Kehoe, R.
Kent, S.
Khederlarian, A.
Kim, S.
Kirkby, D.
Kisner, T.
Kitaura, F.
Kneib, J.
Koposov, S. E.
Kovács, A.
Kremin, A.
Krolewski, A.
L'Huillier, B.
Lahav, O.
Lambert, A.
Lamman, C.
Lan, T. -W.
Landriau, M.
Lang, D.
Lange, J. U.
Lasker, J.
Guillou, L. Le
Leauthaud, A.
Levi, M. E.
Li, T. S.
Linder, E.
Lyons, A.
Magneville, C.
Manera, M.
Manser, C. J.
Margala, D.
Martini, P.
McDonald, P.
Medina, G. E.
Medina-Varela, L.
Meisner, A.
Mena-Fernández, J.
Meneses-Rizo, J.
Mezcua, M.
Miquel, R.
Montero-Camacho, P.
Moon, J.
Moore, S.
Moustakas, J.
Mueller, E.
Mundet, J.
Muñoz-Gutiérrez, A.
Myers, A. D.
Nadathur, S.
Napolitano, L.
Neveux, R.
Newman, J. A.
Nie, J.
Niz, G.
Norberg, P.
Noriega, H. E.
Paillas, E.
Palanque-Delabrouille, N.
Palmese, A.
Zhiwei, P.
Parkinson, D.
Penmetsa, S.
Percival, W. J.
Pérez-Fernández, A.
Pérez-Ràfols, I.
Pieri, M.
Poppett, C.
Porredon, A.
Prada, F.
Pucha, R.
Raichoor, A.
Ramírez-Pérez, C.
Ramirez-Solano, S.
Rashkovetskyi, M.
Ravoux, C.
Rocher, A.
Rockosi, C.
Ross, A. J.
Rossi, G.
Ruggeri, R.
Ruhlmann-Kleider, V.
Sabiu, C. G.
Said, K.
Saintonge, A.
Samushia, L.
Sanchez, E.
Saulder, C.
Schaan, E.
Schlafly, E. F.
Schlegel, D.
Scholte, D.
Schubnell, M.
Seo, H.
Shafieloo, A.
Sharples, R.
Sheu, W.
Silber, J.
Sinigaglia, F.
Siudek, M.
Slepian, Z.
Smith, A.
Sprayberry, D.
Stephey, L.
Suárez-Pérez, J.
Sun, Z.
Tan, T.
Tarlé, G.
Tojeiro, R.
Ureña-López, L. A.
Vaisakh, R.
Valcin, D.
Valdes, F.
Valluri, M.
Vargas-Magaña, M.
Variu, A.
Verde, L.
Walther, M.
Wang, B.
Wang, M. S.
Weaver, B. A.
Weaverdyck, N.
Wechsler, R. H.
White, M.
Xie, Y.
Yang, J.
Yèche, C.
Yu, J.
Yuan, S.
Zhang, H.
Zhang, Z.
Zhao, C.
Zheng, Z.
Zhou, R.
Zhou, Z.
Zou, H.
Zou, S.
Zu, Y.
contents The Dark Energy Spectroscopic Instrument (DESI) was designed to conduct a survey covering 14,000 deg$^2$ over five years to constrain the cosmic expansion history through precise measurements of Baryon Acoustic Oscillations (BAO). The scientific program for DESI was evaluated during a five month Survey Validation (SV) campaign before beginning full operations. This program produced deep spectra of tens of thousands of objects from each of the stellar (MWS), bright galaxy (BGS), luminous red galaxy (LRG), emission line galaxy (ELG), and quasar target classes. These SV spectra were used to optimize redshift distributions, characterize exposure times, determine calibration procedures, and assess observational overheads for the five-year program. In this paper, we present the final target selection algorithms, redshift distributions, and projected cosmology constraints resulting from those studies. We also present a `One-Percent survey' conducted at the conclusion of Survey Validation covering 140 deg$^2$ using the final target selection algorithms with exposures of a depth typical of the main survey. The Survey Validation indicates that DESI will be able to complete the full 14,000 deg$^2$ program with spectroscopically-confirmed targets from the MWS, BGS, LRG, ELG, and quasar programs with total sample sizes of 7.2, 13.8, 7.46, 15.7, and 2.87 million, respectively. These samples will allow exploration of the Milky Way halo, clustering on all scales, and BAO measurements with a statistical precision of 0.28% over the redshift interval $z<1.1$, 0.39% over the redshift interval $1.1<z<1.9$, and 0.46% over the redshift interval $1.9<z<3.5$.
format Preprint
id arxiv_https___arxiv_org_abs_2306_06307
institution arXiv
publishDate 2023
record_format arxiv
spellingShingle Validation of the Scientific Program for the Dark Energy Spectroscopic Instrument
DESI Collaboration
Adame, A. G.
Aguilar, J.
Ahlen, S.
Alam, S.
Aldering, G.
Alexander, D. M.
Alfarsy, R.
Prieto, C. Allende
Alvarez, M.
Alves, O.
Anand, A.
Andrade-Oliveira, F.
Armengaud, E.
Asorey, J.
Avila, S.
Aviles, A.
Bailey, S.
Balaguera-Antolínez, A.
Ballester, O.
Baltay, C.
Bault, A.
Bautista, J.
Behera, J.
Beltran, S. F.
BenZvi, S.
Silva, L. Beraldo e
Bermejo-Climent, J. R.
Berti, A.
Besuner, R.
Beutler, F.
Bianchi, D.
Blake, C.
Blum, R.
Bolton, A. S.
Brieden, S.
Brodzeller, A.
Brooks, D.
Brown, Z.
Buckley-Geer, E.
Burtin, E.
Cabayol-Garcia, L.
Cai, Z.
Canning, R.
Cardiel-Sas, L.
Rosell, A. Carnero
Castander, F. J.
Cervantes-Cota, J. L.
Chabanier, S.
Chaussidon, E.
Chaves-Montero, J.
Chen, S.
Chuang, C.
Claybaugh, T.
Cole, S.
Cooper, A. P.
Cuceu, A.
Davis, T. M.
Dawson, K.
de Belsunce, R.
de la Cruz, R.
de la Macorra, A.
de Mattia, A.
Demina, R.
Demirbozan, U.
DeRose, J.
Dey, A.
Dey, B.
Dhungana, G.
Ding, J.
Ding, Z.
Doel, P.
Doshi, R.
Douglass, K.
Edge, A.
Eftekharzadeh, S.
Eisenstein, D. J.
Elliott, A.
Escoffier, S.
Fagrelius, P.
Fan, X.
Fanning, K.
Fawcett, V. A.
Ferraro, S.
Ereza, J.
Flaugher, B.
Font-Ribera, A.
Forero-Sánchez, D.
Forero-Romero, J. E.
Frenk, C. S.
Gänsicke, B. T.
García, L. Á.
García-Bellido, J.
Garcia-Quintero, C.
Garrison, L. H.
Gil-Marín, H.
Golden-Marx, J.
Gontcho, S. Gontcho A
Gonzalez-Morales, A. X.
Gonzalez-Perez, V.
Gordon, C.
Graur, O.
Green, D.
Gruen, D.
Guy, J.
Hadzhiyska, B.
Hahn, C.
Han, J. J.
Hanif, M. M. S
Herrera-Alcantar, H. K.
Honscheid, K.
Hou, J.
Howlett, C.
Huterer, D.
Iršič, V.
Ishak, M.
Jana, A.
Jiang, L.
Jimenez, J.
Jing, Y. P.
Joudaki, S.
Joyce, R.
Jullo, E.
Juneau, S.
Kizhuprakkat, N.
Karaçaylı, N. G.
Karim, T.
Kehoe, R.
Kent, S.
Khederlarian, A.
Kim, S.
Kirkby, D.
Kisner, T.
Kitaura, F.
Kneib, J.
Koposov, S. E.
Kovács, A.
Kremin, A.
Krolewski, A.
L'Huillier, B.
Lahav, O.
Lambert, A.
Lamman, C.
Lan, T. -W.
Landriau, M.
Lang, D.
Lange, J. U.
Lasker, J.
Guillou, L. Le
Leauthaud, A.
Levi, M. E.
Li, T. S.
Linder, E.
Lyons, A.
Magneville, C.
Manera, M.
Manser, C. J.
Margala, D.
Martini, P.
McDonald, P.
Medina, G. E.
Medina-Varela, L.
Meisner, A.
Mena-Fernández, J.
Meneses-Rizo, J.
Mezcua, M.
Miquel, R.
Montero-Camacho, P.
Moon, J.
Moore, S.
Moustakas, J.
Mueller, E.
Mundet, J.
Muñoz-Gutiérrez, A.
Myers, A. D.
Nadathur, S.
Napolitano, L.
Neveux, R.
Newman, J. A.
Nie, J.
Niz, G.
Norberg, P.
Noriega, H. E.
Paillas, E.
Palanque-Delabrouille, N.
Palmese, A.
Zhiwei, P.
Parkinson, D.
Penmetsa, S.
Percival, W. J.
Pérez-Fernández, A.
Pérez-Ràfols, I.
Pieri, M.
Poppett, C.
Porredon, A.
Prada, F.
Pucha, R.
Raichoor, A.
Ramírez-Pérez, C.
Ramirez-Solano, S.
Rashkovetskyi, M.
Ravoux, C.
Rocher, A.
Rockosi, C.
Ross, A. J.
Rossi, G.
Ruggeri, R.
Ruhlmann-Kleider, V.
Sabiu, C. G.
Said, K.
Saintonge, A.
Samushia, L.
Sanchez, E.
Saulder, C.
Schaan, E.
Schlafly, E. F.
Schlegel, D.
Scholte, D.
Schubnell, M.
Seo, H.
Shafieloo, A.
Sharples, R.
Sheu, W.
Silber, J.
Sinigaglia, F.
Siudek, M.
Slepian, Z.
Smith, A.
Sprayberry, D.
Stephey, L.
Suárez-Pérez, J.
Sun, Z.
Tan, T.
Tarlé, G.
Tojeiro, R.
Ureña-López, L. A.
Vaisakh, R.
Valcin, D.
Valdes, F.
Valluri, M.
Vargas-Magaña, M.
Variu, A.
Verde, L.
Walther, M.
Wang, B.
Wang, M. S.
Weaver, B. A.
Weaverdyck, N.
Wechsler, R. H.
White, M.
Xie, Y.
Yang, J.
Yèche, C.
Yu, J.
Yuan, S.
Zhang, H.
Zhang, Z.
Zhao, C.
Zheng, Z.
Zhou, R.
Zhou, Z.
Zou, H.
Zou, S.
Zu, Y.
Cosmology and Nongalactic Astrophysics
The Dark Energy Spectroscopic Instrument (DESI) was designed to conduct a survey covering 14,000 deg$^2$ over five years to constrain the cosmic expansion history through precise measurements of Baryon Acoustic Oscillations (BAO). The scientific program for DESI was evaluated during a five month Survey Validation (SV) campaign before beginning full operations. This program produced deep spectra of tens of thousands of objects from each of the stellar (MWS), bright galaxy (BGS), luminous red galaxy (LRG), emission line galaxy (ELG), and quasar target classes. These SV spectra were used to optimize redshift distributions, characterize exposure times, determine calibration procedures, and assess observational overheads for the five-year program. In this paper, we present the final target selection algorithms, redshift distributions, and projected cosmology constraints resulting from those studies. We also present a `One-Percent survey' conducted at the conclusion of Survey Validation covering 140 deg$^2$ using the final target selection algorithms with exposures of a depth typical of the main survey. The Survey Validation indicates that DESI will be able to complete the full 14,000 deg$^2$ program with spectroscopically-confirmed targets from the MWS, BGS, LRG, ELG, and quasar programs with total sample sizes of 7.2, 13.8, 7.46, 15.7, and 2.87 million, respectively. These samples will allow exploration of the Milky Way halo, clustering on all scales, and BAO measurements with a statistical precision of 0.28% over the redshift interval $z<1.1$, 0.39% over the redshift interval $1.1<z<1.9$, and 0.46% over the redshift interval $1.9<z<3.5$.
title Validation of the Scientific Program for the Dark Energy Spectroscopic Instrument
topic Cosmology and Nongalactic Astrophysics
url https://arxiv.org/abs/2306.06307

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