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3 results on '"Guy, Julien"'

1. The spectroscopic data processing pipeline for the dark energy spectroscopic instrument

Author

Ministerio de Ciencia e Innovación (España), Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), Department of Energy (US), National Aeronautics and Space Administration (US), National Science Foundation (US), European Commission, Guy, Julien, Gaztañaga, Enrique, Prada, Francisco, Zou, Hu, Ministerio de Ciencia e Innovación (España), Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), Department of Energy (US), National Aeronautics and Space Administration (US), National Science Foundation (US), European Commission, Guy, Julien, Gaztañaga, Enrique, Prada, Francisco, and Zou, Hu

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. The Fourteenth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the Extended Baryon Oscillation Spectroscopic Survey and from the Second Phase of the Apache Point Observatory Galactic Evolution Experiment

Author

Alfred P. Sloan Foundation, Department of Energy (US), University of Utah, Abolfathi, Bela, Aguado, D. S., Aguilar, Gabriela, Allende Prieto, Carlos, Almeida, Andres, Ananna, Tonima Tasnim, Anders, Friedrich, Anderson, Scott F., Andrews, Brett H., Anguiano, Borja, Aragón-Salamanca, Alfonso, Thakar, Aniruddha R., Thomas, Daniel, Mariappan, Vivek, Tissera, Patricia, Tojeiro, Rita, Dell'Agli, Flavia, Tremonti, Christy, Troup, Nicholas W., Frinchaboy, Peter, Lacerna, Ivan, Pieri, Matthew M., Barger, Kathleen A., Urry, Meg, Bershady, Matthew A., Valenzuela, O., van den Bosch, Remco, Vargas-González, Jaime, Marques-Chaves, Rui, Delubac, Timothée, Vargas Magaña, Mariana, Vazquez, Jose Alberto, Pinsonneault, Marc, Wylezalek, Dominika, Villanova, Sandro, Vogt, Nicole P., Zasowski, Gail, Wake, David, Fu, Hai, Wang, Yuting, Weaver, Benjamin Alan, Beutler, Florian, Diamond-Stanic, Aleksandar M., Fernández-Trincado, J. G., Weijmans, Anne-Marie, da Silva Ilha, Gabriele, Masseron, Thomas, Weinberg, David H., Zhang, Kai, Bizyaev, Dmitry, Zhao, Cheng, Zhao, Gong-Bo, Zheng, Zheng, Pisani, Alice, Zhou, Zhi-Min, Merrifield, Michael R., Barrera-Ballesteros, J. K., García Pérez, Ana E., Sánchez, Sebastián F., Zhu, Guangtun, Eracleous, Michael, Zinn, Joel C., Zou, Hu, Blanc, Guillermo A., Prada, Francisco, Blanton, Michael R., Blomqvist, Michael, Bolton, Adam S., Lane, Richard R., Donor, John, Boquien, Médéric, Borissova, Jura, Sanchez Almeida, Jorge, Bovy, Jo, Garcia-Dias, R., Ybarra, Jason E., McDermid, Richard M., Bradna Diaz, Christian Andres, Brandt, William Nielsen, Brinkmann, Jonathan, Lang, Dustin, Brownstein, Joel R., Downes, Juan José, Bundy, Kevin, Burgasser, Adam J., Burtin, Etienne, Prakash, Abhishek, Sánchez-Gallego, José R., Busca, Nicolás G., Cañas, Caleb I., Cano-Díaz, Mariana, McGreer, Ian D., Law, David R., García-Hernández, Domingo Aníbal, Cappellari, Michele, Whelan, David G., Carrera, Ricardo, Queiroz, Anna Bárbara de Andrade, Casey, Andrew R., Cervantes Sodi, Bernardo, Chen, Yanping, Beaton, Rachael, Cherinka, Brian, Chiappini, Cristina, Le Goff, Jean-Marc, Choi, Peter Doohyun, Chojnowski, Drew, Melendez, Matthew, Baumgarten, Falk, Finoguenov, Alexis, Chuang, Chia-Hsun, Garma Oehmichen, Luis Alberto, Chung, Haeun, Clerc, Nicolas, Cohen, Roger E., Santana Rojas, Felipe Antonio, Lee, Young-Bae, Comerford, Julia M., Comparat, Johan, de la Torre, Sylvain, Correa do Nascimento, Janaina, da Costa, Luiz, Drory, Niv, Cousinou, Marie-Claude, Meneses-Goytia, Sofia, Covey, Kevin, Crane, J.D., Armengaud, Eric, Bailey, Stephen, Cruz-Gonzalez, Irene, Kirkby, David, Santiago, Basílio Xavier, Cunha, Katia, du Mas des Bourboux, Hélion, Gelfand, Joseph, Duckworth, Christopher J., Dwelly, Tom, Dyer, Jamie, Ebelke, Garrett L., Davis Eigenbrot, Arthur, Schwope, Axel, Fleming, Scott W., Meszaros, Szabolcs, Wilcots, Eric, Eisenstein, Daniel J., Mahadevan, Suvrath, Elsworth, Yvonne P., Emsellem, Eric, Gil-Marín, Héctor, Gillespie, Bruce A., Goddard, Daniel, González Hernández, Jonay I., Raddick, M. Jordan, Li, Hongyu, Gonzalez-Perez, Violeta, Grabowski, Kathleen, Wild, Vivienne, Green, Paul J., Meza, Andres, Schimoia, Jaderson S., Grier, Catherine J., Ata, Metin, Gueguen, Alain, Raichoor, Anand, Guo, Hong, Li, Cheng, Guy, Julien, Hagen, Alex, Hall, Patrick, Williams, Rob A., Harding, Paul, Hasselquist, Sten, Hawley, Suzanne, Schlafly, Edward F., Barboza Rembold, Sandro, Minchev, Ivan, Hayes, Christian R., Damke, Guillermo J., Hearty, Fred, Aubourg, Éric, Hekker, Saskia, Hernández, Jesús, Gómez Maqueo Chew, Yilen, Hernandez Toledo, Hector, Hogg, David W., Richstein, Hannah, Holley-Bockelmann, Kelly, Holtzman, Jon A., Schlegel, David J., Masters, Karen L., Hou, Jiamin, Minniti, Dante, Hsieh, Bau-Ching, Hunt, Jason A. S., Hutchinson, Timothy A., Wilson, John, Riffel, Rogemar A., Avila-Reese, Vladimir, Hwang, Ho Seong, Jimenez Angel, Camilo Eduardo, Johnson, Jennifer A., Lian, Jianhui, Jones, Amy, Schneider, Donald P., Jönsson, Henrik, Jullo, Eric, Erfanianfar, Ghazaleh, Cirolini, Rafael Fernando, Khan, Fahim Sakil, Wood-Vasey, W. Michael, Kinemuchi, Karen, Liang, Yu, Mueller, Eva-Maria, Lima, Marcos, Lin, Lihwai, Long, Dan, Lucatello, Sara, Lundgren, Britt, Yèche, Christophe, Seo, Hee-Jong, Darling, Jeremy, Mackereth, J. Ted, Salvato, Mara, Balland, Christophe, MacLeod, Chelsea L., Müller-Sánchez, Francisco, Muna, Demitri, Muñoz, Ricardo R., Myers, Adam D., Riffel, Rogério, Nair, Preethi, Nandra, Kirpal, Davidson, James W., Jr., Ness, Melissa, Beers, Timothy C., Bird, Jonathan C., Newman, Jeffrey A., Escoffier, Stephanie, Nichol, Robert C., Bartosz, Curtis, Rix, Hans-Walter, Nidever, David L., Nitschelm, Christian, Noterdaeme, Pasquier, Dawson, Kyle, O'Connell, Julia, Oelkers, Ryan James, Oravetz, Audrey, Xiao, Ting, Serenelli, Aldo, Oravetz, Daniel, Kirkpatrick, Charles C., IV, Ortíz, Erik Aquino, Fan, Xiaohui, Osorio, Yeisson, Pace, Zach, Merloni, Andrea, Bastien, Fabienne, Padilla, Nelson, Palanque-Delabrouille, Nathalie, Palicio, Pedro Alonso, Yan, Renbin, Schiavon, Ricardo P., Pan, Hsi-An, Shen, Shiyin, Pan, Kaike, Parikh, Taniya, Pâris, Isabelle, de Icaza Lizaola, Miguel Angel C., Fernández Alvar, Emma, Park, Changbom, Peirani, Sebastien, Pellejero-Ibanez, Marcos, Robin, Annie C., Bates, Dominic, Yang, Meng, Penny, Samantha, Percival, Will J., Maia, Marcio Antonio Geimba, Pèrez-Fournon, Ismael, de la Macorra, Axel, Petitjean, Patrick, Rodríguez Torres, Sergio, Shen, Yue, Román-Zúñiga, Carlos, Bautista, Julian, Ross, Ashley J., Rossi, Graziano, Ruan, John, Zakamska, Nadia, Badenes, Carles, Ruggeri, Rossana, Westfall, Kyle B., Feuillet, Diane, Ruiz, Jose, Shetrone, Matthew, Shull, Michael, Silva Aguirre, Víctor, Simon, Joshua D., Skrutskie, Mike, Slosar, Anže, Kitaura, Francisco-Shu, Smethurst, Rebecca, Galbany, Lluís, Gaulme, Patrick, Belfiore, Francesco, Majewski, Steven R., Smith, Verne, Argudo-Fernández, Maria, Sobeck, Jennifer, Somers, Garrett, Souter, Barbara J., Knapp, Gillian R., Souto, Diogo, Spindler, Ashley, Stark, David V., De Lee, Nathan, Zamora, Olga, Stassun, Keivan, Steinmetz, Matthias, Manchado, Arturo, Stello, Dennis, Bender, Chad F., Schuster, William J., Font-Ribera, Andreu, Storchi-Bergmann, Thaisa, Streblyanska, Alina, Stringfellow, Guy S., de Sainte Agathe, Victoria, Suárez, Genaro, Zarrouk, Pauline, Sun, Jing, Szigeti, Laszlo, Taghizadeh-Popp, Manuchehr, Kneib, Jean-Paul, Maraston, Claudia, Talbot, Michael S., Tang, Baitian, Tao, Charling, Freischlad, Gordon, Deconto Machado, Alice, Bernardi, Mariangela, Tayar, Jamie, Sánchez, Ariel G., Tembe, Mita, Kollmeier, Juna A., Teske, Johanna, Alfred P. Sloan Foundation, Department of Energy (US), University of Utah, Abolfathi, Bela, Aguado, D. S., Aguilar, Gabriela, Allende Prieto, Carlos, Almeida, Andres, Ananna, Tonima Tasnim, Anders, Friedrich, Anderson, Scott F., Andrews, Brett H., Anguiano, Borja, Aragón-Salamanca, Alfonso, Thakar, Aniruddha R., Thomas, Daniel, Mariappan, Vivek, Tissera, Patricia, Tojeiro, Rita, Dell'Agli, Flavia, Tremonti, Christy, Troup, Nicholas W., Frinchaboy, Peter, Lacerna, Ivan, Pieri, Matthew M., Barger, Kathleen A., Urry, Meg, Bershady, Matthew A., Valenzuela, O., van den Bosch, Remco, Vargas-González, Jaime, Marques-Chaves, Rui, Delubac, Timothée, Vargas Magaña, Mariana, Vazquez, Jose Alberto, Pinsonneault, Marc, Wylezalek, Dominika, Villanova, Sandro, Vogt, Nicole P., Zasowski, Gail, Wake, David, Fu, Hai, Wang, Yuting, Weaver, Benjamin Alan, Beutler, Florian, Diamond-Stanic, Aleksandar M., Fernández-Trincado, J. G., Weijmans, Anne-Marie, da Silva Ilha, Gabriele, Masseron, Thomas, Weinberg, David H., Zhang, Kai, Bizyaev, Dmitry, Zhao, Cheng, Zhao, Gong-Bo, Zheng, Zheng, Pisani, Alice, Zhou, Zhi-Min, Merrifield, Michael R., Barrera-Ballesteros, J. K., García Pérez, Ana E., Sánchez, Sebastián F., Zhu, Guangtun, Eracleous, Michael, Zinn, Joel C., Zou, Hu, Blanc, Guillermo A., Prada, Francisco, Blanton, Michael R., Blomqvist, Michael, Bolton, Adam S., Lane, Richard R., Donor, John, Boquien, Médéric, Borissova, Jura, Sanchez Almeida, Jorge, Bovy, Jo, Garcia-Dias, R., Ybarra, Jason E., McDermid, Richard M., Bradna Diaz, Christian Andres, Brandt, William Nielsen, Brinkmann, Jonathan, Lang, Dustin, Brownstein, Joel R., Downes, Juan José, Bundy, Kevin, Burgasser, Adam J., Burtin, Etienne, Prakash, Abhishek, Sánchez-Gallego, José R., Busca, Nicolás G., Cañas, Caleb I., Cano-Díaz, Mariana, McGreer, Ian D., Law, David R., García-Hernández, Domingo Aníbal, Cappellari, Michele, Whelan, David G., Carrera, Ricardo, Queiroz, Anna Bárbara de Andrade, Casey, Andrew R., Cervantes Sodi, Bernardo, Chen, Yanping, Beaton, Rachael, Cherinka, Brian, Chiappini, Cristina, Le Goff, Jean-Marc, Choi, Peter Doohyun, Chojnowski, Drew, Melendez, Matthew, Baumgarten, Falk, Finoguenov, Alexis, Chuang, Chia-Hsun, Garma Oehmichen, Luis Alberto, Chung, Haeun, Clerc, Nicolas, Cohen, Roger E., Santana Rojas, Felipe Antonio, Lee, Young-Bae, Comerford, Julia M., Comparat, Johan, de la Torre, Sylvain, Correa do Nascimento, Janaina, da Costa, Luiz, Drory, Niv, Cousinou, Marie-Claude, Meneses-Goytia, Sofia, Covey, Kevin, Crane, J.D., Armengaud, Eric, Bailey, Stephen, Cruz-Gonzalez, Irene, Kirkby, David, Santiago, Basílio Xavier, Cunha, Katia, du Mas des Bourboux, Hélion, Gelfand, Joseph, Duckworth, Christopher J., Dwelly, Tom, Dyer, Jamie, Ebelke, Garrett L., Davis Eigenbrot, Arthur, Schwope, Axel, Fleming, Scott W., Meszaros, Szabolcs, Wilcots, Eric, Eisenstein, Daniel J., Mahadevan, Suvrath, Elsworth, Yvonne P., Emsellem, Eric, Gil-Marín, Héctor, Gillespie, Bruce A., Goddard, Daniel, González Hernández, Jonay I., Raddick, M. Jordan, Li, Hongyu, Gonzalez-Perez, Violeta, Grabowski, Kathleen, Wild, Vivienne, Green, Paul J., Meza, Andres, Schimoia, Jaderson S., Grier, Catherine J., Ata, Metin, Gueguen, Alain, Raichoor, Anand, Guo, Hong, Li, Cheng, Guy, Julien, Hagen, Alex, Hall, Patrick, Williams, Rob A., Harding, Paul, Hasselquist, Sten, Hawley, Suzanne, Schlafly, Edward F., Barboza Rembold, Sandro, Minchev, Ivan, Hayes, Christian R., Damke, Guillermo J., Hearty, Fred, Aubourg, Éric, Hekker, Saskia, Hernández, Jesús, Gómez Maqueo Chew, Yilen, Hernandez Toledo, Hector, Hogg, David W., Richstein, Hannah, Holley-Bockelmann, Kelly, Holtzman, Jon A., Schlegel, David J., Masters, Karen L., Hou, Jiamin, Minniti, Dante, Hsieh, Bau-Ching, Hunt, Jason A. S., Hutchinson, Timothy A., Wilson, John, Riffel, Rogemar A., Avila-Reese, Vladimir, Hwang, Ho Seong, Jimenez Angel, Camilo Eduardo, Johnson, Jennifer A., Lian, Jianhui, Jones, Amy, Schneider, Donald P., Jönsson, Henrik, Jullo, Eric, Erfanianfar, Ghazaleh, Cirolini, Rafael Fernando, Khan, Fahim Sakil, Wood-Vasey, W. Michael, Kinemuchi, Karen, Liang, Yu, Mueller, Eva-Maria, Lima, Marcos, Lin, Lihwai, Long, Dan, Lucatello, Sara, Lundgren, Britt, Yèche, Christophe, Seo, Hee-Jong, Darling, Jeremy, Mackereth, J. Ted, Salvato, Mara, Balland, Christophe, MacLeod, Chelsea L., Müller-Sánchez, Francisco, Muna, Demitri, Muñoz, Ricardo R., Myers, Adam D., Riffel, Rogério, Nair, Preethi, Nandra, Kirpal, Davidson, James W., Jr., Ness, Melissa, Beers, Timothy C., Bird, Jonathan C., Newman, Jeffrey A., Escoffier, Stephanie, Nichol, Robert C., Bartosz, Curtis, Rix, Hans-Walter, Nidever, David L., Nitschelm, Christian, Noterdaeme, Pasquier, Dawson, Kyle, O'Connell, Julia, Oelkers, Ryan James, Oravetz, Audrey, Xiao, Ting, Serenelli, Aldo, Oravetz, Daniel, Kirkpatrick, Charles C., IV, Ortíz, Erik Aquino, Fan, Xiaohui, Osorio, Yeisson, Pace, Zach, Merloni, Andrea, Bastien, Fabienne, Padilla, Nelson, Palanque-Delabrouille, Nathalie, Palicio, Pedro Alonso, Yan, Renbin, Schiavon, Ricardo P., Pan, Hsi-An, Shen, Shiyin, Pan, Kaike, Parikh, Taniya, Pâris, Isabelle, de Icaza Lizaola, Miguel Angel C., Fernández Alvar, Emma, Park, Changbom, Peirani, Sebastien, Pellejero-Ibanez, Marcos, Robin, Annie C., Bates, Dominic, Yang, Meng, Penny, Samantha, Percival, Will J., Maia, Marcio Antonio Geimba, Pèrez-Fournon, Ismael, de la Macorra, Axel, Petitjean, Patrick, Rodríguez Torres, Sergio, Shen, Yue, Román-Zúñiga, Carlos, Bautista, Julian, Ross, Ashley J., Rossi, Graziano, Ruan, John, Zakamska, Nadia, Badenes, Carles, Ruggeri, Rossana, Westfall, Kyle B., Feuillet, Diane, Ruiz, Jose, Shetrone, Matthew, Shull, Michael, Silva Aguirre, Víctor, Simon, Joshua D., Skrutskie, Mike, Slosar, Anže, Kitaura, Francisco-Shu, Smethurst, Rebecca, Galbany, Lluís, Gaulme, Patrick, Belfiore, Francesco, Majewski, Steven R., Smith, Verne, Argudo-Fernández, Maria, Sobeck, Jennifer, Somers, Garrett, Souter, Barbara J., Knapp, Gillian R., Souto, Diogo, Spindler, Ashley, Stark, David V., De Lee, Nathan, Zamora, Olga, Stassun, Keivan, Steinmetz, Matthias, Manchado, Arturo, Stello, Dennis, Bender, Chad F., Schuster, William J., Font-Ribera, Andreu, Storchi-Bergmann, Thaisa, Streblyanska, Alina, Stringfellow, Guy S., de Sainte Agathe, Victoria, Suárez, Genaro, Zarrouk, Pauline, Sun, Jing, Szigeti, Laszlo, Taghizadeh-Popp, Manuchehr, Kneib, Jean-Paul, Maraston, Claudia, Talbot, Michael S., Tang, Baitian, Tao, Charling, Freischlad, Gordon, Deconto Machado, Alice, Bernardi, Mariangela, Tayar, Jamie, Sánchez, Ariel G., Tembe, Mita, Kollmeier, Juna A., and Teske, Johanna

Abstract

The fourth generation of the Sloan Digital Sky Survey (SDSS-IV) has been in operation since 2014 July. This paper describes the second data release from this phase, and the 14th from SDSS overall (making this Data Release Fourteen or DR14). This release makes the data taken by SDSS-IV in its first two years of operation (2014-2016 July) public. Like all previous SDSS releases, DR14 is cumulative, including the most recent reductions and calibrations of all data taken by SDSS since the first phase began operations in 2000. New in DR14 is the first public release of data from the extended Baryon Oscillation Spectroscopic Survey; the first data from the second phase of the Apache Point Observatory (APO) Galactic Evolution Experiment (APOGEE-2), including stellar parameter estimates from an innovative data-driven machine-learning algorithm known as ¿The Cannon¿ and almost twice as many data cubes from the Mapping Nearby Galaxies at APO (MaNGA) survey as were in the previous release (N = 2812 in total). This paper describes the location and format of the publicly available data from the SDSS-IV surveys. We provide references to the important technical papers describing how these data have been taken (both targeting and observation details) and processed for scientific use. The SDSS web site (www.sdss.org) has been updated for this release and provides links to data downloads, as well as tutorials and examples of data use. SDSS-IV is planning to continue to collect astronomical data until 2020 and will be followed by SDSS-V. © 2018. The American Astronomical Society..

Published
2018

3. The Completed SDSS-IV Extended Baryon Oscillation Spectroscopic Survey: Baryon Acoustic Oscillations with Lyα Forests.

Author

Bourboux, Hélion du Mas des, Rich, James, Font-Ribera, Andreu, de Sainte Agathe, Victoria, Farr, James, Etourneau, Thomas, Goff, Jean-Marc Le, Cuceu, Andrei, Balland, Christophe, Bautista, Julian E., Blomqvist, Michael, Brinkmann, Jonathan, Brownstein, Joel R., Chabanier, Solčne, Chaussidon, Edmond, Dawson, Kyle, González-Morales, Alma X., Guy, Julien, Lyke, Brad W., and de la Macorra, Axel

Subjects
OSCILLATIONS, ACOUSTIC measurements, QUASARS, REDSHIFT, FORECASTING
Abstract

We present a measurement of baryonic acoustic oscillations (BAOs) from Lyα absorption and quasars at an effective redshift using the complete extended Baryonic Oscillation Spectroscopic Survey (eBOSS). The 16th and final eBOSS data release (SDSS DR16) contains all data from eBOSS and its predecessor, the Baryonic Oscillation Spectroscopic Survey (BOSS), providing 210,005 quasars with zq > 2.10 that are used to measure Lyα absorption. We measure the BAO scale both in the autocorrelation of Lyα absorption and in its cross-correlation with 341,468 quasars with redshift zq > 1.77. Apart from the statistical gain from new quasars and deeper observations, the main improvements over previous work come from more accurate modeling of physical and instrumental correlations and the use of new sets of mock data. Combining the BAO measurement from the auto- and cross-correlation yields the constraints of the two ratios and , where the error bars are statistical. These results are within 1.5σ of the prediction of the flat-ΛCDM cosmology of Planck (2016). The analysis code, picca , the catalog of the flux transmission field measurements, and the Δχ2 surfaces are publicly available. [ABSTRACT FROM AUTHOR]

Published
2020
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