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1. The Spectroscopic Data Processing Pipeline for the Dark Energy Spectroscopic Instrument

Author

Guy, J, Bailey, S, Kremin, A, Alam, Shadab, Alexander, DM, Prieto, C Allende, BenZvi, S, Bolton, AS, Brooks, D, Chaussidon, E, Cooper, AP, Dawson, K, de la Macorra, A, Dey, A, Dey, Biprateep, Dhungana, G, Eisenstein, DJ, Font-Ribera, A, Forero-Romero, JE, Gaztañaga, E, Gontcho, S Gontcho A, Green, D, Honscheid, K, Ishak, M, Kehoe, R, Kirkby, D, Kisner, T, Koposov, Sergey E, Lan, Ting-Wen, Landriau, M, Le Guillou, L, Levi, Michael E, Magneville, C, Manser, Christopher J, Martini, P, Meisner, Aaron M, Miquel, R, Moustakas, J, Myers, Adam D, Newman, Jeffrey A, Nie, Jundan, Palanque-Delabrouille, N, Percival, WJ, Poppett, C, Prada, F, Raichoor, A, Ravoux, C, Ross, AJ, Schlafly, EF, Schlegel, D, Schubnell, M, Sharples, Ray M, Tarlé, Gregory, Weaver, BA, Yéche, Christophe, Zhou, Rongpu, Zhou, Zhimin, and Zou, H

Subjects
Nuclear and Plasma Physics, Physical Sciences, Affordable and Clean Energy, Astronomical and Space Sciences, Astronomy & Astrophysics, Astronomical sciences, Particle and high energy physics
Abstract

We describe the spectroscopic data processing pipeline of the Dark Energy Spectroscopic Instrument (DESI), which is conducting a redshift survey of about 40 million galaxies and quasars using a purpose-built instrument on the 4 m Mayall Telescope at Kitt Peak National Observatory. The main goal of DESI is to measure with unprecedented precision the expansion history of the universe with the baryon acoustic oscillation technique and the growth rate of structure with redshift space distortions. Ten spectrographs with three cameras each disperse the light from 5000 fibers onto 30 CCDs, covering the near-UV to near-infrared (3600-9800 Å) with a spectral resolution ranging from 2000 to 5000. The DESI data pipeline generates wavelength- and flux-calibrated spectra of all the targets, along with spectroscopic classifications and redshift measurements. Fully processed data from each night are typically available to the DESI collaboration the following morning. We give details about the pipeline's algorithms, and provide performance results on the stability of the optics, the quality of the sky background subtraction, and the precision and accuracy of the instrumental calibration. This pipeline has been used to process the DESI Survey Validation data set, and has exceeded the project's requirements for redshift performance, with high efficiency and a purity greater than 99% for all target classes.

Published
2023

2. Target Selection and Validation of DESI Emission Line Galaxies

Author

Raichoor, A, Moustakas, J, Newman, Jeffrey A, Karim, T, Ahlen, S, Alam, Shadab, Bailey, S, Brooks, D, Dawson, K, de la Macorra, A, de Mattia, A, Dey, A, Dey, Biprateep, Dhungana, G, Eftekharzadeh, S, Eisenstein, DJ, Fanning, K, Font-Ribera, A, García-Bellido, J, Gaztañaga, E, Gontcho, S Gontcho A, Guy, J, Honscheid, K, Ishak, M, Kehoe, R, Kisner, T, Kremin, Anthony, Lan, Ting-Wen, Landriau, M, Le Guillou, L, Levi, Michael E, Magneville, C, Manera, M, Martini, P, Meisner, Aaron M, Myers, Adam D, Nie, Jundan, Palanque-Delabrouille, N, Percival, WJ, Poppett, C, Prada, F, Ross, AJ, Ruhlmann-Kleider, V, Sabiu, CG, Schlafly, EF, Schlegel, D, Tarlé, Gregory, Weaver, BA, Yèche, Christophe, Zhou, Rongpu, Zhou, Zhimin, and Zou, H

Subjects
Space Sciences, Physical Sciences, Astronomical and Space Sciences, Astronomy & Astrophysics, Astronomical sciences, Particle and high energy physics
Abstract

The Dark Energy Spectroscopic Instrument (DESI) will precisely constrain cosmic expansion and the growth of structure by collecting ∼40 million extragalactic redshifts across ∼80% of cosmic history and one-third of the sky. The Emission Line galaxy (ELG) sample, which will comprise about one-third of all DESI tracers, will be used to probe the universe over the 0.6 < z < 1.6 range, including the 1.1 < z < 1.6 range, which is expected to provide the tightest constraints. We present the target selection for the DESI Survey Validation (SV) and Main Survey ELG samples, which relies on the imaging of the Legacy Surveys. The Main ELG selection consists of a g-band magnitude cut and a (g − r) versus (r − z) color box, while the SV selection explores extensions of the Main selection boundaries. The Main ELG sample is composed of two disjoint subsamples, which have target densities of about 1940 deg−2 and 460 deg−2, respectively. We first characterize their photometric properties and density variations across the footprint. We then analyze the DESI spectroscopic data that have been obtained from 2020 December to 2021 December in the SV and Main Survey. We establish a preliminary criterion for selecting reliable redshifts, based on the [O ii] flux measurement, and assess its performance. Using this criterion, we are able to present the spectroscopic efficiency of the Main ELG selection, along with its redshift distribution. We thus demonstrate that the Main selection 1940 deg−2 subsample alone should provide 400 deg−2 and 460 deg−2 reliable redshifts in the 0.6 < z < 1.1 and the 1.1 < z < 1.6 ranges, respectively.

Published
2023

3. Target Selection and Validation of DESI Luminous Red Galaxies

Author

Zhou, Rongpu, Dey, Biprateep, Newman, Jeffrey A, Eisenstein, Daniel J, Dawson, K, Bailey, S, Berti, A, Guy, J, Lan, Ting-Wen, Zou, H, Aguilar, J, Ahlen, S, Alam, Shadab, Brooks, D, de la Macorra, A, Dey, A, Dhungana, G, Fanning, K, Font-Ribera, A, Gontcho, S Gontcho A, Honscheid, K, Ishak, Mustapha, Kisner, T, Kovács, A, Kremin, A, Landriau, M, Levi, Michael E, Magneville, C, Manera, Marc, Martini, P, Meisner, Aaron M, Miquel, R, Moustakas, J, Myers, Adam D, Nie, Jundan, Palanque-Delabrouille, N, Percival, WJ, Poppett, C, Prada, F, Raichoor, A, Ross, AJ, Schlafly, E, Schlegel, D, Schubnell, M, Tarlé, Gregory, Weaver, BA, Wechsler, RH, Yéche, Christophe, and Zhou, Zhimin

Subjects
Astronomical and Space Sciences, Astronomy & Astrophysics
Abstract

The Dark Energy Spectroscopic Instrument (DESI) is carrying out a five-year survey that aims to measure the redshifts of tens of millions of galaxies and quasars, including 8 million luminous red galaxies (LRGs) in the redshift range 0.4 < z ≲ 1.0. Here we present the selection of the DESI LRG sample and assess its spectroscopic performance using data from Survey Validation (SV) and the first two months of the Main Survey. The DESI LRG sample, selected using g, r, z, and W1 photometry from the DESI Legacy Imaging Surveys, is highly robust against imaging systematics. The sample has a target density of 605 deg−2 and a comoving number density of 5 × 10−4 h3 Mpc−3 in 0.4 < z < 0.8; this is a significantly higher density than previous LRG surveys (such as SDSS, BOSS, and eBOSS) while also extending to z ∼ 1. After applying a bright star veto mask developed for the sample, 98.9% of the observed LRG targets yield confident redshifts (with a catastrophic failure rate of 0.2% in the confident redshifts), and only 0.5% of the LRG targets are stellar contamination. The LRG redshift efficiency varies with source brightness and effective exposure time, and we present a simple model that accurately characterizes this dependence. In the appendices, we describe the extended LRG samples observed during SV.

Published
2023

4. REDSHIFT MEASUREMENT AND SPECTRAL CLASSIFICATION FOR eBOSS GALAXIES WITH THE REDMONSTER SOFTWARE

Author

Hutchinson, Timothy A, Bolton, Adam S, Dawson, Kyle S, Prieto, Carlos Allende, Bailey, Stephen, Bautista, Julian E, Brownstein, Joel R, Conroy, Charlie, Guy, Julien, Myers, Adam D, Newman, Jeffrey A, Prakash, Abhishek, Carnero-Rosell, Aurelio, Seo, Hee-Jong, Tojeiro, Rita, Vivek, M, and Zhu, Guangtun Ben

Subjects
methods: data analysis, surveys, techniques: spectroscopic, astro-ph.IM, astro-ph.CO, astro-ph.GA, Astronomical and Space Sciences, Astronomy & Astrophysics
Abstract

We describe the redmonster automated redshift measurement and spectral classification software designed for the extended Baryon Oscillation Spectroscopic Survey (eBOSS) of the Sloan Digital Sky Survey IV (SDSS-IV). We describe the algorithms, the template standard and requirements, and the newly developed galaxy templates to be used on eBOSS spectra. We present results from testing on early data from eBOSS, where we have found a 90.5% automated redshift and spectral classification success rate for the luminous red galaxy sample (redshifts 0.6 ≲ z ≲ 1.0). The redmonster performance meets the eBOSS cosmology requirements for redshift classification and catastrophic failures and represents a significant improvement over the previous pipeline. We describe the empirical processes used to determine the optimum number of additive polynomial terms in our models and an acceptable δX2rthreshold for declaring statistical confidence. Statistical errors on redshift measurement due to photon shot noise are assessed, and we find typical values of a few tens of km s-1. An investigation of redshift differences in repeat observations scaled by error estimates yields a distribution with a Gaussian mean and standard deviation of μ ∼ 0.01 and σ ∼ 0.65, respectively, suggesting the reported statistical redshift uncertainties are over-estimated by ∼54%. We assess the effects of object magnitude, signal-to-noise ratio, fiber number, and fiber head location on the pipeline's redshift success rate. Finally, we describe directions of ongoing development.

Published
2016

5. THE DATA REDUCTION PIPELINE FOR THE SDSS-IV MaNGA IFU GALAXY SURVEY

Author

Law, David R, Cherinka, Brian, Yan, Renbin, Andrews, Brett H, Bershady, Matthew A, Bizyaev, Dmitry, Blanc, Guillermo A, Blanton, Michael R, Bolton, Adam S, Brownstein, Joel R, Bundy, Kevin, Chen, Yanmei, Drory, Niv, D’Souza, Richard, Fu, Hai, Jones, Amy, Kauffmann, Guinevere, MacDonald, Nicholas, Masters, Karen L, Newman, Jeffrey A, Parejko, John K, Sánchez-Gallego, José R, Sánchez, Sebastian F, Schlegel, David J, Thomas, Daniel, Wake, David A, Weijmans, Anne-Marie, Westfall, Kyle B, and Zhang, Kai

Subjects
methods: data analysis, surveys, techniques: imaging spectroscopy, astro-ph.IM, Astronomical and Space Sciences, Astronomy & Astrophysics
Abstract

Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) is an optical fiber-bundle integral-field unit (IFU) spectroscopic survey that is one of three core programs in the fourth-generation Sloan Digital Sky Survey (SDSS-IV). With a spectral coverage of 3622-10354 A and an average footprint of ∼500 arcsec2 per IFU the scientific data products derived from MaNGA will permit exploration of the internal structure of a statistically large sample of 10,000 low-redshift galaxies in unprecedented detail. Comprising 174 individually pluggable science and calibration IFUs with a near-constant data stream, MaNGA is expected to obtain ∼100 million raw-frame spectra and ∼10 million reduced galaxy spectra over the six-year lifetime of the survey. In this contribution, we describe the MaNGA Data Reduction Pipeline algorithms and centralized metadata framework that produce sky-subtracted spectrophotometrically calibrated spectra and rectified three-dimensional data cubes that combine individual dithered observations. For the 1390 galaxy data cubes released in Summer 2016 as part of SDSS-IV Data Release 13, we demonstrate that the MaNGA data have nearly Poisson-limited sky subtraction shortward of ∼8500 A and reach a typical 10σ limiting continuum surface brightness μ = 23.5 AB arcsec-2 in a five-arcsecond-diameter aperture in the g-band. The wavelength calibration of the MaNGA data is accurate to 5 km s-1 rms, with a median spatial resolution of 2.54 arcsec FWHM (1.8 kpc at the median redshift of 0.037) and a median spectral resolution of σ = 72 km s-1.

Published
2016

6. THE SDSS-IV EXTENDED BARYON OSCILLATION SPECTROSCOPIC SURVEY: OVERVIEW AND EARLY DATA

Author

Dawson, Kyle S, Kneib, Jean-Paul, Percival, Will J, Alam, Shadab, Albareti, Franco D, Anderson, Scott F, Armengaud, Eric, Aubourg, Éric, Bailey, Stephen, Bautista, Julian E, Berlind, Andreas A, Bershady, Matthew A, Beutler, Florian, Bizyaev, Dmitry, Blanton, Michael R, Blomqvist, Michael, Bolton, Adam S, Bovy, Jo, Brandt, WN, Brinkmann, Jon, Brownstein, Joel R, Burtin, Etienne, Busca, NG, Cai, Zheng, Chuang, Chia-Hsun, Clerc, Nicolas, Comparat, Johan, Cope, Frances, Croft, Rupert AC, Cruz-Gonzalez, Irene, da Costa, Luiz N, Cousinou, Marie-Claude, Darling, Jeremy, de la Macorra, Axel, de la Torre, Sylvain, Delubac, Timothée, du Mas des Bourboux, Hélion, Dwelly, Tom, Ealet, Anne, Eisenstein, Daniel J, Eracleous, Michael, Escoffier, S, Fan, Xiaohui, Finoguenov, Alexis, Font-Ribera, Andreu, Frinchaboy, Peter, Gaulme, Patrick, Georgakakis, Antonis, Green, Paul, Guo, Hong, Guy, Julien, Ho, Shirley, Holder, Diana, Huehnerhoff, Joe, Hutchinson, Timothy, Jing, Yipeng, Jullo, Eric, Kamble, Vikrant, Kinemuchi, Karen, Kirkby, David, Kitaura, Francisco-Shu, Klaene, Mark A, Laher, Russ R, Lang, Dustin, Laurent, Pierre, Le Goff, Jean-Marc, Li, Cheng, Liang, Yu, Lima, Marcos, Lin, Qiufan, Lin, Weipeng, Lin, Yen-Ting, Long, Daniel C, Lundgren, Britt, MacDonald, Nicholas, Maia, Marcio Antonio Geimba, Malanushenko, Elena, Malanushenko, Viktor, Mariappan, Vivek, McBride, Cameron K, McGreer, Ian D, Ménard, Brice, Merloni, Andrea, Meza, Andres, Montero-Dorta, Antonio D, Muna, Demitri, Myers, Adam D, Nandra, Kirpal, Naugle, Tracy, Newman, Jeffrey A, Noterdaeme, Pasquier, Nugent, Peter, Ogando, Ricardo, Olmstead, Matthew D, Oravetz, Audrey, Oravetz, Daniel J, Padmanabhan, Nikhil, Palanque-Delabrouille, Nathalie, Pan, Kaike, and Parejko, John K

Subjects
Astronomical Sciences, Physical Sciences, cosmology: observations, surveys, astro-ph.CO, Astronomical and Space Sciences, Astronomy & Astrophysics, Astronomical sciences, Particle and high energy physics
Abstract

In a six-year program started in 2014 July, the Extended Baryon Oscillation Spectroscopic Survey (eBOSS) will conduct novel cosmological observations using the BOSS spectrograph at Apache Point Observatory. These observations will be conducted simultaneously with the Time Domain Spectroscopic Survey (TDSS) designed for variability studies and the Spectroscopic Identification of eROSITA Sources (SPIDERS) program designed for studies of X-ray sources. In particular, eBOSS will measure with percent-level precision the distance-redshift relation with baryon acoustic oscillations (BAO) in the clustering of matter. eBOSS will use four different tracers of the underlying matter density field to vastly expand the volume covered by BOSS and map the large-scale-structures over the relatively unconstrained redshift range 0.6 < z < 2.2. Using more than 250,000 new, spectroscopically confirmed luminous red galaxies at a median redshift z = 0.72, we project that eBOSS will yield measurements of the angular diameter distance dA(z) to an accuracy of 1.2% and measurements of H(z) to 2.1% when combined with the z > 0.6 sample of BOSS galaxies. With ∼195,000 new emission line galaxy redshifts, we expect BAO measurements of dA(z) to an accuracy of 3.1% and H(z) to 4.7% at an effective redshift of z = 0.87. A sample of more than 500,000 spectroscopically confirmed quasars will provide the first BAO distance measurements over the redshift range 0.9 < z < 2.2, with expected precision of 2.8% and 4.2% on dA(z) and H(z), respectively. Finally, with 60,000 new quasars and re-observation of 60,000 BOSS quasars, we will obtain new Lyα forest measurements at redshifts z > 2.1; these new data will enhance the precision of dA(z) and H(z) at z > 2.1 by a factor of 1.44 relative to BOSS. Furthermore, eBOSS will provide improved tests of General Relativity on cosmological scales through redshift-space distortion measurements, improved tests for non-Gaussianity in the primordial density field, and new constraints on the summed mass of all neutrino species. Here, we provide an overview of the cosmological goals, spectroscopic target sample, demonstration of spectral quality from early data, and projected cosmological constraints from eBOSS.

Published
2016

7. The Target-selection Pipeline for the Dark Energy Spectroscopic Instrument

Author

Myers, Adam D., primary, Moustakas, John, additional, Bailey, Stephen, additional, Weaver, Benjamin A., additional, Cooper, Andrew P., additional, Forero-Romero, Jaime E., additional, Abolfathi, Bela, additional, Alexander, David M., additional, Brooks, David, additional, Chaussidon, Edmond, additional, Chuang, Chia-Hsun, additional, Dawson, Kyle, additional, Dey, Arjun, additional, Dey, Biprateep, additional, Dhungana, Govinda, additional, Doel, Peter, additional, Fanning, Kevin, additional, Gaztañaga, Enrique, additional, A Gontcho, Satya Gontcho, additional, Gonzalez-Morales, Alma X., additional, Hahn, ChangHoon, additional, Herrera-Alcantar, Hiram K., additional, Honscheid, Klaus, additional, Ishak, Mustapha, additional, Karim, Tanveer, additional, Kirkby, David, additional, Kisner, Theodore, additional, Koposov, Sergey E., additional, Kremin, Anthony, additional, Lan, Ting-Wen, additional, Landriau, Martin, additional, Lang, Dustin, additional, Levi, Michael E., additional, Magneville, Christophe, additional, Napolitano, Lucas, additional, Martini, Paul, additional, Meisner, Aaron, additional, Newman, Jeffrey A., additional, Palanque-Delabrouille, Nathalie, additional, Percival, Will, additional, Poppett, Claire, additional, Prada, Francisco, additional, Raichoor, Anand, additional, Ross, Ashley J., additional, Schlafly, Edward F., additional, Schlegel, David, additional, Schubnell, Michael, additional, Tan, Ting, additional, Tarle, Gregory, additional, Wilson, Michael J., additional, Yèche, Christophe, additional, Zhou, Rongpu, additional, Zhou, Zhimin, additional, and Zou, Hu, additional

Published
2023
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8. Overview of the Instrumentation for the Dark Energy Spectroscopic Instrument

Author

Abareshi, B., additional, Aguilar, J., additional, Ahlen, S., additional, Alam, Shadab, additional, Alexander, David M., additional, Alfarsy, R., additional, Allen, L., additional, Prieto, C. Allende, additional, Alves, O., additional, Ameel, J., additional, Armengaud, E., additional, Asorey, J., additional, Aviles, Alejandro, additional, Bailey, S., additional, Balaguera-Antolínez, A., additional, Ballester, O., additional, Baltay, C., additional, Bault, A., additional, Beltran, S. F., additional, Benavides, B., additional, BenZvi, S., additional, Berti, A., additional, Besuner, R., additional, Beutler, Florian, additional, Bianchi, D., additional, Blake, C., additional, Blanc, P., additional, Blum, R., additional, Bolton, A., additional, Bose, S., additional, Bramall, D., additional, Brieden, S., additional, Brodzeller, A., additional, Brooks, D., additional, Brownewell, C., additional, Buckley-Geer, E., additional, Cahn, R. N., additional, Cai, Z., additional, Canning, R., additional, Capasso, R., additional, Rosell, A. Carnero, additional, Carton, P., additional, Casas, R., additional, Castander, F. J., additional, Cervantes-Cota, J. L., additional, Chabanier, S., additional, Chaussidon, E., additional, Chuang, C., additional, Circosta, C., additional, Cole, S., additional, Cooper, A. P., additional, Costa, L. da, additional, Cousinou, M.-C., additional, Cuceu, A., additional, Davis, T. M., additional, Dawson, K., additional, Cruz-Noriega, R. de la, additional, Macorra, A. de la, additional, Mattia, A. de, additional, Costa, J. Della, additional, Demmer, P., additional, Derwent, M., additional, Dey, A., additional, Dey, B., additional, Dhungana, G., additional, Ding, Z., additional, Dobson, C., additional, Doel, P., additional, Donald-McCann, J., additional, Donaldson, J., additional, Douglass, K., additional, Duan, Y., additional, Dunlop, P., additional, Edelstein, J., additional, Eftekharzadeh, S., additional, Eisenstein, D. J., additional, Enriquez-Vargas, M., additional, Escoffier, S., additional, Evatt, M., additional, Fagrelius, P., additional, Fan, X., additional, Fanning, K., additional, Fawcett, V. A., additional, Ferraro, S., additional, Ereza, J., additional, Flaugher, B., additional, Font-Ribera, A., additional, Forero-Romero, J. E., additional, Frenk, C. S., additional, Fromenteau, S., additional, Gänsicke, B. T., additional, Garcia-Quintero, C., additional, Garrison, L., additional, Gaztañaga, E., additional, Gerardi, F., additional, Gil-Marín, H., additional, A Gontcho, S. Gontcho, additional, Gonzalez-Morales, Alma X., additional, Gonzalez-de-Rivera, G., additional, Gonzalez-Perez, V., additional, Gordon, C., additional, Graur, O., additional, Green, D., additional, Grove, C., additional, Gruen, D., additional, Gutierrez, G., additional, Guy, J., additional, Hahn, C., additional, Harris, S., additional, Herrera, D., additional, Herrera-Alcantar, Hiram K., additional, Honscheid, K., additional, Howlett, C., additional, Huterer, D., additional, Iršič, V., additional, Ishak, M., additional, Jelinsky, P., additional, Jiang, L., additional, Jimenez, J., additional, Jing, Y. P., additional, Joyce, R., additional, Jullo, E., additional, Juneau, S., additional, Karaçaylı, N. G., additional, Karamanis, M., additional, Karcher, A., additional, Karim, T., additional, Kehoe, R., additional, Kent, S., additional, Kirkby, D., additional, Kisner, T., additional, Kitaura, F., additional, Koposov, S. E., additional, Kovács, A., additional, Kremin, A., additional, Krolewski, Alex, additional, L’Huillier, B., additional, Lahav, O., additional, Lambert, A., additional, Lamman, C., additional, Lan, Ting-Wen, additional, Landriau, M., additional, Lane, S., additional, Lang, D., additional, Lange, J. U., additional, Lasker, J., additional, Guillou, L. Le, additional, Leauthaud, A., additional, Van Suu, A. Le, additional, Levi, Michael E., additional, Li, T. S., additional, Magneville, C., additional, Manera, M., additional, Manser, Christopher J., additional, Marshall, B., additional, Martini, Paul, additional, McCollam, W., additional, McDonald, P., additional, Meisner, Aaron M., additional, Mena-Fernández, J., additional, Meneses-Rizo, J., additional, Mezcua, M., additional, Miller, T., additional, Miquel, R., additional, Montero-Camacho, P., additional, Moon, J., additional, Moustakas, J., additional, Mueller, E., additional, Muñoz-Gutiérrez, Andrea, additional, Myers, Adam D., additional, Nadathur, S., additional, Najita, J., additional, Napolitano, L., additional, Neilsen, E., additional, Newman, Jeffrey A., additional, Nie, J. D., additional, Ning, Y., additional, Niz, G., additional, Norberg, P., additional, Noriega, Hernán E., additional, O’Brien, T., additional, Obuljen, A., additional, Palanque-Delabrouille, N., additional, Palmese, A., additional, Zhiwei, P., additional, Pappalardo, D., additional, PENG, X., additional, Percival, W. J., additional, Perruchot, S., additional, Pogge, R., additional, Poppett, C., additional, Porredon, A., additional, Prada, F., additional, Prochaska, J., additional, Pucha, R., additional, Pérez-Fernández, A., additional, Pérez-Ràfols, I., additional, Rabinowitz, D., additional, Raichoor, A., additional, Ramirez-Solano, S., additional, Ramírez-Pérez, César, additional, Ravoux, C., additional, Reil, K., additional, Rezaie, M., additional, Rocher, A., additional, Rockosi, C., additional, Roe, N. A., additional, Roodman, A., additional, Ross, A. J., additional, Rossi, G., additional, Ruggeri, R., additional, Ruhlmann-Kleider, V., additional, Sabiu, C. G., additional, Safonova, S., additional, Said, K., additional, Saintonge, A., additional, Catonga, Javier Salas, additional, Samushia, L., additional, Sanchez, E., additional, Saulder, C., additional, Schaan, E., additional, Schlafly, E., additional, Schlegel, D., additional, Schmoll, J., additional, Scholte, D., additional, Schubnell, M., additional, Secroun, A., additional, Seo, H., additional, Serrano, S., additional, Sharples, Ray M., additional, Sholl, Michael J., additional, Silber, Joseph Harry, additional, Silva, D. R., additional, Sirk, M., additional, Siudek, M., additional, Smith, A., additional, Sprayberry, D., additional, Staten, R., additional, Stupak, B., additional, Tan, T., additional, Tarlé, Gregory, additional, Tie, Suk Sien, additional, Tojeiro, R., additional, Ureña-López, L. A., additional, Valdes, F., additional, Valenzuela, O., additional, Valluri, M., additional, Vargas-Magaña, M., additional, Verde, L., additional, Walther, M., additional, Wang, B., additional, Wang, M. S., additional, Weaver, B. A., additional, Weaverdyck, C., additional, Wechsler, R., additional, Wilson, Michael J., additional, Yang, J., additional, Yu, Y., additional, Yuan, S., additional, Yèche, Christophe, additional, Zhang, H., additional, Zhang, K., additional, Zhao, Cheng, additional, Zhou, Rongpu, additional, Zhou, Zhimin, additional, Zou, H., additional, Zou, J., additional, Zou, S., additional, and Zu, Y., additional

Published
2022
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9. Overview of the DESI Legacy Imaging Surveys

Author

Dey, Arjun, primary, Schlegel, David J., additional, Lang, Dustin, additional, Blum, Robert, additional, Burleigh, Kaylan, additional, Fan, Xiaohui, additional, Findlay, Joseph R., additional, Finkbeiner, Doug, additional, Herrera, David, additional, Juneau, Stéphanie, additional, Landriau, Martin, additional, Levi, Michael, additional, McGreer, Ian, additional, Meisner, Aaron, additional, Myers, Adam D., additional, Moustakas, John, additional, Nugent, Peter, additional, Patej, Anna, additional, Schlafly, Edward F., additional, Walker, Alistair R., additional, Valdes, Francisco, additional, Weaver, Benjamin A., additional, Yèche, Christophe, additional, Zou, Hu, additional, Zhou, Xu, additional, Abareshi, Behzad, additional, Abbott, T. M. C., additional, Abolfathi, Bela, additional, Aguilera, C., additional, Alam, Shadab, additional, Allen, Lori, additional, Alvarez, A., additional, Annis, James, additional, Ansarinejad, Behzad, additional, Aubert, Marie, additional, Beechert, Jacqueline, additional, Bell, Eric F., additional, BenZvi, Segev Y., additional, Beutler, Florian, additional, Bielby, Richard M., additional, Bolton, Adam S., additional, Briceño, César, additional, Buckley-Geer, Elizabeth J., additional, Butler, Karen, additional, Calamida, Annalisa, additional, Carlberg, Raymond G., additional, Carter, Paul, additional, Casas, Ricard, additional, Castander, Francisco J., additional, Choi, Yumi, additional, Comparat, Johan, additional, Cukanovaite, Elena, additional, Delubac, Timothée, additional, DeVries, Kaitlin, additional, Dey, Sharmila, additional, Dhungana, Govinda, additional, Dickinson, Mark, additional, Ding, Zhejie, additional, Donaldson, John B., additional, Duan, Yutong, additional, Duckworth, Christopher J., additional, Eftekharzadeh, Sarah, additional, Eisenstein, Daniel J., additional, Etourneau, Thomas, additional, Fagrelius, Parker A., additional, Farihi, Jay, additional, Fitzpatrick, Mike, additional, Font-Ribera, Andreu, additional, Fulmer, Leah, additional, Gänsicke, Boris T., additional, Gaztanaga, Enrique, additional, George, Koshy, additional, Gerdes, David W., additional, A Gontcho, Satya Gontcho, additional, Gorgoni, Claudio, additional, Green, Gregory, additional, Guy, Julien, additional, Harmer, Diane, additional, Hernandez, M., additional, Honscheid, Klaus, additional, Huang, Lijuan (Wendy), additional, James, David J., additional, Jannuzi, Buell T., additional, Jiang, Linhua, additional, Joyce, Richard, additional, Karcher, Armin, additional, Karkar, Sonia, additional, Kehoe, Robert, additional, Kneib, Jean-Paul,, additional, Kueter-Young, Andrea, additional, Lan, Ting-Wen, additional, Lauer, Tod R., additional, Guillou, Laurent Le, additional, Van Suu, Auguste Le, additional, Lee, Jae Hyeon, additional, Lesser, Michael, additional, Levasseur, Laurence Perreault, additional, Li, Ting S., additional, Mann, Justin L., additional, Marshall, Robert, additional, Martínez-Vázquez, C. E., additional, Martini, Paul, additional, du Mas des Bourboux, Hélion, additional, McManus, Sean, additional, Meier, Tobias Gabriel, additional, Ménard, Brice, additional, Metcalfe, Nigel, additional, Muñoz-Gutiérrez, Andrea, additional, Najita, Joan, additional, Napier, Kevin, additional, Narayan, Gautham, additional, Newman, Jeffrey A., additional, Nie, Jundan, additional, Nord, Brian, additional, Norman, Dara J., additional, Olsen, Knut A. G., additional, Paat, Anthony, additional, Palanque-Delabrouille, Nathalie, additional, Peng, Xiyan, additional, Poppett, Claire L., additional, Poremba, Megan R., additional, Prakash, Abhishek, additional, Rabinowitz, David, additional, Raichoor, Anand, additional, Rezaie, Mehdi, additional, Robertson, A. N., additional, Roe, Natalie A., additional, Ross, Ashley J., additional, Ross, Nicholas P., additional, Rudnick, Gregory, additional, Safonova, Sasha, additional, Saha, Abhijit, additional, Sánchez, F. Javier, additional, Savary, Elodie, additional, Schweiker, Heidi, additional, Scott, Adam, additional, Seo, Hee-Jong, additional, Shan, Huanyuan, additional, Silva, David R., additional, Slepian, Zachary, additional, Soto, Christian, additional, Sprayberry, David, additional, Staten, Ryan, additional, Stillman, Coley M., additional, Stupak, Robert J., additional, Summers, David L., additional, Tie, Suk Sien, additional, Tirado, H., additional, Vargas-Magaña, Mariana, additional, Vivas, A. Katherina, additional, Wechsler, Risa H., additional, Williams, Doug, additional, Yang, Jinyi, additional, Yang, Qian, additional, Yapici, Tolga, additional, Zaritsky, Dennis, additional, Zenteno, A., additional, Zhang, Kai, additional, Zhang, Tianmeng, additional, Zhou, Rongpu, additional, and Zhou, Zhimin, additional

Published
2019
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10. Sloan Digital Sky Survey IV: Mapping the Milky Way, Nearby Galaxies, and the Distant Universe

Author

Blanton, Michael R., primary, Bershady, Matthew A., additional, Abolfathi, Bela, additional, Albareti, Franco D., additional, Prieto, Carlos Allende, additional, Almeida, Andres, additional, Alonso-García, Javier, additional, Anders, Friedrich, additional, Anderson, Scott F., additional, Andrews, Brett, additional, Aquino-Ortíz, Erik, additional, Aragón-Salamanca, Alfonso, additional, Argudo-Fernández, Maria, additional, Armengaud, Eric, additional, Aubourg, Eric, additional, Avila-Reese, Vladimir, additional, Badenes, Carles, additional, Bailey, Stephen, additional, Barger, Kathleen A., additional, Barrera-Ballesteros, Jorge, additional, Bartosz, Curtis, additional, Bates, Dominic, additional, Baumgarten, Falk, additional, Bautista, Julian, additional, Beaton, Rachael, additional, Beers, Timothy C., additional, Belfiore, Francesco, additional, Bender, Chad F., additional, Berlind, Andreas A., additional, Bernardi, Mariangela, additional, Beutler, Florian, additional, Bird, Jonathan C., additional, Bizyaev, Dmitry, additional, Blanc, Guillermo A., additional, Blomqvist, Michael, additional, Bolton, Adam S., additional, Boquien, Médéric, additional, Borissova, Jura, additional, Bosch, Remco van den, additional, Bovy, Jo, additional, Brandt, William N., additional, Brinkmann, Jonathan, additional, Brownstein, Joel R., additional, Bundy, Kevin, additional, Burgasser, Adam J., additional, Burtin, Etienne, additional, Busca, Nicolás G., additional, Cappellari, Michele, additional, Carigi, Maria Leticia Delgado, additional, Carlberg, Joleen K., additional, Rosell, Aurelio Carnero, additional, Carrera, Ricardo, additional, Chanover, Nancy J., additional, Cherinka, Brian, additional, Cheung, Edmond, additional, Chew, Yilen Gómez Maqueo, additional, Chiappini, Cristina, additional, Choi, Peter Doohyun, additional, Chojnowski, Drew, additional, Chuang, Chia-Hsun, additional, Chung, Haeun, additional, Cirolini, Rafael Fernando, additional, Clerc, Nicolas, additional, Cohen, Roger E., additional, Comparat, Johan, additional, Costa, Luiz da, additional, Cousinou, Marie-Claude, additional, Covey, Kevin, additional, Crane, Jeffrey D., additional, Croft, Rupert A. C., additional, Cruz-Gonzalez, Irene, additional, Cuadra, Daniel Garrido, additional, Cunha, Katia, additional, Damke, Guillermo J., additional, Darling, Jeremy, additional, Davies, Roger, additional, Dawson, Kyle, additional, Macorra, Axel de la, additional, Dell’Agli, Flavia, additional, Lee, Nathan De, additional, Delubac, Timothée, additional, Mille, Francesco Di, additional, Diamond-Stanic, Aleks, additional, Cano-Díaz, Mariana, additional, Donor, John, additional, Downes, Juan José, additional, Drory, Niv, additional, Bourboux, Hélion du Mas des, additional, Duckworth, Christopher J., additional, Dwelly, Tom, additional, Dyer, Jamie, additional, Ebelke, Garrett, additional, Eigenbrot, Arthur D., additional, Eisenstein, Daniel J., additional, Emsellem, Eric, additional, Eracleous, Mike, additional, Escoffier, Stephanie, additional, Evans, Michael L., additional, Fan, Xiaohui, additional, Fernández-Alvar, Emma, additional, Fernandez-Trincado, J. G., additional, Feuillet, Diane K., additional, Finoguenov, Alexis, additional, Fleming, Scott W., additional, Font-Ribera, Andreu, additional, Fredrickson, Alexander, additional, Freischlad, Gordon, additional, Frinchaboy, Peter M., additional, Fuentes, Carla E., additional, Galbany, Lluís, additional, Garcia-Dias, R., additional, García-Hernández, D. A., additional, Gaulme, Patrick, additional, Geisler, Doug, additional, Gelfand, Joseph D., additional, Gil-Marín, Héctor, additional, Gillespie, Bruce A., additional, Goddard, Daniel, additional, Gonzalez-Perez, Violeta, additional, Grabowski, Kathleen, additional, Green, Paul J., additional, Grier, Catherine J., additional, Gunn, James E., additional, Guo, Hong, additional, Guy, Julien, additional, Hagen, Alex, additional, Hahn, ChangHoon, additional, Hall, Matthew, additional, Harding, Paul, additional, Hasselquist, Sten, additional, Hawley, Suzanne L., additional, Hearty, Fred, additional, Hernández, Jonay I. Gonzalez, additional, Ho, Shirley, additional, Hogg, David W., additional, Holley-Bockelmann, Kelly, additional, Holtzman, Jon A., additional, Holzer, Parker H., additional, Huehnerhoff, Joseph, additional, Hutchinson, Timothy A., additional, Hwang, Ho Seong, additional, Ibarra-Medel, Héctor J., additional, Ilha, Gabriele da Silva, additional, Ivans, Inese I., additional, Ivory, KeShawn, additional, Jackson, Kelly, additional, Jensen, Trey W., additional, Johnson, Jennifer A., additional, Jones, Amy, additional, Jönsson, Henrik, additional, Jullo, Eric, additional, Kamble, Vikrant, additional, Kinemuchi, Karen, additional, Kirkby, David, additional, Kitaura, Francisco-Shu, additional, Klaene, Mark, additional, Knapp, Gillian R., additional, Kneib, Jean-Paul, additional, Kollmeier, Juna A., additional, Lacerna, Ivan, additional, Lane, Richard R., additional, Lang, Dustin, additional, Law, David R., additional, Lazarz, Daniel, additional, Lee, Youngbae, additional, Goff, Jean-Marc Le, additional, Liang, Fu-Heng, additional, Li, Cheng, additional, Li, Hongyu, additional, Lian, Jianhui, additional, Lima, Marcos, additional, Lin, Lihwai, additional, Lin, Yen-Ting, additional, Lis, Sara Bertran de, additional, Liu, Chao, additional, Lizaola, Miguel Angel C. de Icaza, additional, Long, Dan, additional, Lucatello, Sara, additional, Lundgren, Britt, additional, MacDonald, Nicholas K., additional, Machado, Alice Deconto, additional, MacLeod, Chelsea L., additional, Mahadevan, Suvrath, additional, Maia, Marcio Antonio Geimba, additional, Maiolino, Roberto, additional, Majewski, Steven R., additional, Malanushenko, Elena, additional, Malanushenko, Viktor, additional, Manchado, Arturo, additional, Mao, Shude, additional, Maraston, Claudia, additional, Marques-Chaves, Rui, additional, Masseron, Thomas, additional, Masters, Karen L., additional, McBride, Cameron K., additional, McDermid, Richard M., additional, McGrath, Brianne, additional, McGreer, Ian D., additional, Medina Peña, Nicolás, additional, Melendez, Matthew, additional, Merloni, Andrea, additional, Merrifield, Michael R., additional, Meszaros, Szabolcs, additional, Meza, Andres, additional, Minchev, Ivan, additional, Minniti, Dante, additional, Miyaji, Takamitsu, additional, More, Surhud, additional, Mulchaey, John, additional, Müller-Sánchez, Francisco, additional, Muna, Demitri, additional, Munoz, Ricardo R., additional, Myers, Adam D., additional, Nair, Preethi, additional, Nandra, Kirpal, additional, Nascimento, Janaina Correa do, additional, Negrete, Alenka, additional, Ness, Melissa, additional, Newman, Jeffrey A., additional, Nichol, Robert C., additional, Nidever, David L., additional, Nitschelm, Christian, additional, Ntelis, Pierros, additional, O’Connell, Julia E., additional, Oelkers, Ryan J., additional, Oravetz, Audrey, additional, Oravetz, Daniel, additional, Pace, Zach, additional, Padilla, Nelson, additional, Palanque-Delabrouille, Nathalie, additional, Palicio, Pedro Alonso, additional, Pan, Kaike, additional, Parejko, John K., additional, Parikh, Taniya, additional, Pâris, Isabelle, additional, Park, Changbom, additional, Patten, Alim Y., additional, Peirani, Sebastien, additional, Pellejero-Ibanez, Marcos, additional, Penny, Samantha, additional, Percival, Will J., additional, Perez-Fournon, Ismael, additional, Petitjean, Patrick, additional, Pieri, Matthew M., additional, Pinsonneault, Marc, additional, Pisani, Alice, additional, Poleski, Radosław, additional, Prada, Francisco, additional, Prakash, Abhishek, additional, Queiroz, Anna Bárbara de Andrade, additional, Raddick, M. Jordan, additional, Raichoor, Anand, additional, Rembold, Sandro Barboza, additional, Richstein, Hannah, additional, Riffel, Rogemar A., additional, Riffel, Rogério, additional, Rix, Hans-Walter, additional, Robin, Annie C., additional, Rockosi, Constance M., additional, Rodríguez-Torres, Sergio, additional, Roman-Lopes, A., additional, Román-Zúñiga, Carlos, additional, Rosado, Margarita, additional, Ross, Ashley J., additional, Rossi, Graziano, additional, Ruan, John, additional, Ruggeri, Rossana, additional, Rykoff, Eli S., additional, Salazar-Albornoz, Salvador, additional, Salvato, Mara, additional, Sánchez, Ariel G., additional, Aguado, D. S., additional, Sánchez-Gallego, José R., additional, Santana, Felipe A., additional, Santiago, Basílio Xavier, additional, Sayres, Conor, additional, Schiavon, Ricardo P., additional, Schimoia, Jaderson da Silva, additional, Schlafly, Edward F., additional, Schlegel, David J., additional, Schneider, Donald P., additional, Schultheis, Mathias, additional, Schuster, William J., additional, Schwope, Axel, additional, Seo, Hee-Jong, additional, Shao, Zhengyi, additional, Shen, Shiyin, additional, Shetrone, Matthew, additional, Shull, Michael, additional, Simon, Joshua D., additional, Skinner, Danielle, additional, Skrutskie, M. F., additional, Slosar, Anže, additional, Smith, Verne V., additional, Sobeck, Jennifer S., additional, Sobreira, Flavia, additional, Somers, Garrett, additional, Souto, Diogo, additional, Stark, David V., additional, Stassun, Keivan, additional, Stauffer, Fritz, additional, Steinmetz, Matthias, additional, Storchi-Bergmann, Thaisa, additional, Streblyanska, Alina, additional, Stringfellow, Guy S., additional, Suárez, Genaro, additional, Sun, Jing, additional, Suzuki, Nao, additional, Szigeti, Laszlo, additional, Taghizadeh-Popp, Manuchehr, additional, Tang, Baitian, additional, Tao, Charling, additional, Tayar, Jamie, additional, Tembe, Mita, additional, Teske, Johanna, additional, Thakar, Aniruddha R., additional, Thomas, Daniel, additional, Thompson, Benjamin A., additional, Tinker, Jeremy L., additional, Tissera, Patricia, additional, Tojeiro, Rita, additional, Toledo, Hector Hernandez, additional, Torre, Sylvain de la, additional, Tremonti, Christy, additional, Troup, Nicholas W., additional, Valenzuela, Octavio, additional, Valpuesta, Inma Martinez, additional, Vargas-González, Jaime, additional, Vargas-Magaña, Mariana, additional, Vazquez, Jose Alberto, additional, Villanova, Sandro, additional, Vivek, M., additional, Vogt, Nicole, additional, Wake, David, additional, Walterbos, Rene, additional, Wang, Yuting, additional, Weaver, Benjamin Alan, additional, Weijmans, Anne-Marie, additional, Weinberg, David H., additional, Westfall, Kyle B., additional, Whelan, David G., additional, Wild, Vivienne, additional, Wilson, John, additional, Wood-Vasey, W. M., additional, Wylezalek, Dominika, additional, Xiao, Ting, additional, Yan, Renbin, additional, Yang, Meng, additional, Ybarra, Jason E., additional, Yèche, Christophe, additional, Zakamska, Nadia, additional, Zamora, Olga, additional, Zarrouk, Pauline, additional, Zasowski, Gail, additional, Zhang, Kai, additional, Zhao, Gong-Bo, additional, Zheng, Zheng, additional, Zhou, Xu, additional, Zhou, Zhi-Min, additional, Zhu, Guangtun B., additional, Zoccali, Manuela, additional, and Zou, Hu, additional

Published
2017
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11. The Team Keck Treasury Redshift Survey of the GOODS-North Field

Author

Wirth, Gregory D., primary, Willmer, Christopher N. A., additional, Amico, Paola, additional, Chaffee, Frederic H., additional, Goodrich, Robert W., additional, Kwok, Shui, additional, Lyke, James E., additional, Mader, Jeff A., additional, Tran, Hien D., additional, Barger, Amy J., additional, Cowie, Lennox L., additional, Capak, Peter, additional, Coil, Alison L., additional, Cooper, Michael C., additional, Conrad, Al, additional, Davis, Marc, additional, Faber, S. M., additional, Hu, Esther M., additional, Koo, David C., additional, Le Mignant, David, additional, Newman, Jeffrey A., additional, and Songaila, Antoinette, additional

Published
2004
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13. High-Redshift Quasars Found in Sloan Digital Sky Survey Commissioning Data. IV. Luminosity Function from the Fall Equatorial Stripe Sample

Author

Fan, Xiaohui, primary, Strauss, Michael A., additional, Schneider, Donald P., additional, Gunn, James E., additional, Lupton, Robert H., additional, Becker, Robert H., additional, Davis, Marc, additional, Newman, Jeffrey A., additional, Richards, Gordon T., additional, White, Richard L., additional, Anderson, Jr., John E., additional, Annis, James, additional, Bahcall, Neta A., additional, Brunner, Robert J., additional, Csabai, István, additional, Hennessy, G. S., additional, Hindsley, Robert B., additional, Fukugita, Masataka, additional, Kunszt, Peter Z., additional, Ivezić, Željko, additional, Knapp, Gillian R., additional, McKay, Timothy A., additional, Munn, Jeffrey A., additional, Pier, Jeffrey R., additional, Szalay, Alexander S., additional, and York, Donald G., additional

Published
2001
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14. High-Redshift Quasars Found in Sloan Digital Sky Survey Commissioning Data. III. A Color-selected Sample at [ITAL][CLC]i[/CLC][/ITAL]* < 20 in the Fall Equatorial Stripe

Author

Fan, Xiaohui, primary, Strauss, Michael A., additional, Richards, Gordon T., additional, Newman, Jeffrey A., additional, Becker, Robert H., additional, Schneider, Donald P., additional, Gunn, James E., additional, Davis, Marc, additional, White, Richard L., additional, Lupton, Robert H., additional, Anderson, Jr., John E., additional, Annis, James, additional, Bahcall, Neta A., additional, Brunner, Robert J., additional, Csabai, István, additional, Doi, Mamoru, additional, Fukugita, Masataka, additional, Hennessy, G. S., additional, Hindsley, Robert B., additional, Ivezić, Željko, additional, Knapp, Gillian R., additional, McKay, Timothy A., additional, Munn, Jeffrey A., additional, Pier, Jeffrey R., additional, Szalay, Alexander S., additional, and York, Donald G., additional

Published
2001
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