Zobrazeno 1 - 10
of 108
pro vyhledávání: '"Pérez-Ràfols, Ignasi"'
We study of the properties of a new class of circumgalactic medium absorbers identified in the Lyman-$\alpha$ forest: "Strong, Blended Lyman-$\alpha$" (or SBLA) absorption systems. We study SBLAs at $2.4
Externí odkaz:
http://arxiv.org/abs/2309.06813
Autor:
Pérez-Ràfols, Ignasi, Abramo, L. Raul, Martínez-Solaeche, Ginés, Pieri, Matthew M., Queiroz, Carolina, Rodrigues, Natália V. N., Bonoli, Silvia, Chaves-Montero, Jonás, Morrison, Sean S., Alcaniz, Jailson, Benitez, Narciso, Carneiro, Saulo, Cenarro, Javier, Cristóbal-Hornillos, David, Dupke, Renato, Ederoclite, Alessandro, Delgado, Rosa M. González, Hernán-Caballero, Antonio, López-Sanjuan, Carlos, Marín-Franch, Antonio, Marra, Valerio, de Oliveira, Claudia Mendes, Moles, Mariano, Sodré Jr., Laerte, Taylor, Keith, Varela, Jesús, Ramió, Héctor Vázquez
Publikováno v:
A&A 678, A144 (2023)
We present a list of quasar candidates including photometric redshift estimates from the miniJPAS Data Release constructed using SQUEzE. This work is based on machine-learning classification of photometric data of quasar candidates using SQUEzE. It h
Externí odkaz:
http://arxiv.org/abs/2309.00461
Autor:
Ramírez-Pérez, César, Pérez-Ràfols, Ignasi, Font-Ribera, Andreu, Karim, M. Abdul, Armengaud, E., Bautista, J., Beltran, S. F., Cabayol-Garcia, L., Cai, Z., Chabanier, S., Chaussidon, E., Chaves-Montero, J., Cuceu, A., de la Cruz, R., García-Bellido, J., Gonzalez-Morales, A. X., Gordon, C., Herrera-Alcantar, H. K., Iršič, V., Ishak, M., Karaçaylı, N. G., Lukić, Zarija, Manser, C. J., Montero-Camacho, P., Napolitano, L., Niz, G., Pieri, M., Ravoux, C., Sinigaglia, F., Tan, T., Walther, M., Wang, B., Aguilar, J., Ahlen, S., Bailey, S., Brooks, D., Claybaugh, T., Dawson, K., de la Macorra, A., Dhungana, G., Doel, P., Fanning, K., Forero-Romero, J. E., Gontcho, S. Gontcho A, Guy, J., Honscheid, K., Kehoe, R., Kisner, T., Landriau, M., Guillou, L. Le, Levi, M. E., Magneville, C., Martini, P., Meisner, A., Miquel, R., Moustakas, J., Mueller, E., Muñoz-Gutiérrez, A., Nie, J., Palanque-Delabrouille, N., Percival, W. J., Rossi, G., Sanchez, E., Schlafly, E. F., Schlegel, D., Seo, H., Tarlé, G., Weaver, B. A., Yèche, C., Zhou, Z.
We present and validate the catalog of Lyman-$\alpha$ forest fluctuations for 3D analyses using the Early Data Release (EDR) from the Dark Energy Spectroscopic Instrument (DESI) survey. We used 88,511 quasars collected from DESI Survey Validation (SV
Externí odkaz:
http://arxiv.org/abs/2306.06312
Autor:
Ravoux, Corentin, Karim, Marie Lynn Abdul, Armengaud, Eric, Walther, Michael, Karaçaylı, Naim Göksel, Martini, Paul, Guy, Julien, Aguilar, Jessica Nicole, Ahlen, Steven, Bailey, Stephen, Bautista, Julian, Beltran, Sergio Felipe, Brooks, David, Cabayol-Garcia, Laura, Chabanier, Solène, Chaussidon, Edmond, Chaves-Montero, Jonás, Dawson, Kyle, de la Cruz, Rodrigo, de la Macorra, Axel, Doel, Peter, Fanning, Kevin, Font-Ribera, Andreu, Forero-Romero, Jaime, Gontcho, Satya Gontcho A, Gonzalez-Morales, Alma, Gordon, Calum, Herrera-Alcantar, Hiram, Honscheid, Klaus, Iršič, Vid, Ishak, Mustapha, Kehoe, Robert, Kisner, Theodore, Kremin, Anthony, Landriau, Martin, Guillou, Laurent Le, Levi, Michael, Lukić, Zarija, Magneville, Christophe, Meisner, Aaron, Miquel, Ramon, Moustakas, John, Mueller, Eva-Maria, Muñoz-Gutiérrez, Andrea, Napolitano, Lucas, Nie, Jundan, Niz, Gustavo, Palanque-Delabrouille, Nathalie, Percival, Will, Pérez-Ràfols, Ignasi, Pieri, Matthew, Poppett, Claire, Prada, Francisco, Pérez, César Ramírez, Rossi, Graziano, Sanchez, Eusebio, Schlegel, David, Schubnell, Michael, Seo, Hee-Jong, Sinigaglia, Francesco, Tan, Ting, Tarlé, Gregory, Wang, Ben, Weaver, Benjamin, Yèche, Christophe, Zhou, Zhimin
Publikováno v:
MNRAS, Volume 526, Issue 4, December 2023, Pages 5118-5140
We present the one-dimensional Lyman-$\alpha$ forest power spectrum measurement using the first data provided by the Dark Energy Spectroscopic Instrument (DESI). The data sample comprises $26,330$ quasar spectra, at redshift $z > 2.1$, contained in t
Externí odkaz:
http://arxiv.org/abs/2306.06311
Autor:
Martínez-Solaeche, G., Queiroz, Carolina, Delgado, R. M. González, Rodrigues, Natália V. N., García-Benito, R., Pérez-Ràfols, Ignasi, Abramo, L. Raul, Díaz-García, Luis, Pieri, Matthew M., Chaves-Montero, Jonás, Hernán-Caballero, A., Rodríguez-Martín, J. E., Bonoli, Silvia, Morrison, Sean S., Márquez, Isabel, Vílchez, J. M., López-Sanjuan, C., Cenarro, A. J., Dupke, R. A., Martín-Franch, A., Varel, J., Ramió, H. Vázquez, Cristóbal-Hornillos, D., Moles, M., Alcaniz, J., Benitez, N., Fernández-Ontiveros, J. A., Ederoclite, A., Marra, V., de Oliveira, C. Mendes, Taylor, K.
Publikováno v:
A&A 673, A103 (2023)
This paper is part of large effort within the J-PAS collaboration that aims to classify point-like sources in miniJPAS, which were observed in 60 optical bands over $\sim$ 1 deg$^2$ in the AEGIS field. We developed two algorithms based on artificial
Externí odkaz:
http://arxiv.org/abs/2303.12684
Autor:
Rodrigues, Natália V. N., Abramo, L. Raul, Queiroz, Carolina, Martínez-Solaeche, Ginés, Pérez-Ràfols, Ignasi, Bonoli, Silvia, Chaves-Montero, Jonás, Pieri, Matthew M., Delgado, Rosa M. González, Morrison, Sean S., Marra, Valerio, Márquez, Isabel, Hernán-Caballero, A., Díaz-García, L. A., Benítez, Narciso, Cenarro, A. Javier, Dupke, Renato A., Ederoclite, Alessandro, López-Sanjuan, Carlos, Marín-Franch, Antonio, de Oliveira, Claudia Mendes, Moles, Mariano, Sodré Jr., Laerte, Varela, Jesús, Ramió, Héctor Vázquez, Taylor, Keith
Publikováno v:
Monthly Notices of the Royal Astronomical Society, 2023, 520, 3494-3509
Astrophysical surveys rely heavily on the classification of sources as stars, galaxies or quasars from multi-band photometry. Surveys in narrow-band filters allow for greater discriminatory power, but the variety of different types and redshifts of t
Externí odkaz:
http://arxiv.org/abs/2303.00489
Autor:
Jin, Shoko, Trager, Scott C., Dalton, Gavin B., Aguerri, J. Alfonso L., Drew, J. E., Falcón-Barroso, Jesús, Gänsicke, Boris T., Hill, Vanessa, Iovino, Angela, Pieri, Matthew M., Poggianti, Bianca M., Smith, D. J. B., Vallenari, Antonella, Abrams, Don Carlos, Aguado, David S., Antoja, Teresa, Aragón-Salamanca, Alfonso, Ascasibar, Yago, Babusiaux, Carine, Balcells, Marc, Barrena, R., Battaglia, Giuseppina, Belokurov, Vasily, Bensby, Thomas, Bonifacio, Piercarlo, Bragaglia, Angela, Carrasco, Esperanza, Carrera, Ricardo, Cornwell, Daniel J., Domínguez-Palmero, Lilian, Duncan, Kenneth J., Famaey, Benoit, Fariña, Cecilia, Gonzalez, Oscar A., Guest, Steve, Hatch, Nina A., Hess, Kelley M., Hoskin, Matthew J., Irwin, Mike, Knapen, Johan H., Koposov, Sergey E., Kuchner, Ulrike, Laigle, Clotilde, Lewis, Jim, Longhetti, Marcella, Lucatello, Sara, Méndez-Abreu, Jairo, Mercurio, Amata, Molaeinezhad, Alireza, Monguió, Maria, Morrison, Sean, Murphy, David N. A., de Arriba, Luis Peralta, Pérez, Isabel, Pérez-Ràfols, Ignasi, Picó, Sergio, Raddi, Roberto, Romero-Gómez, Mercè, Royer, Frédéric, Siebert, Arnaud, Seabroke, George M., Som, Debopam, Terrett, David, Thomas, Guillaume, Wesson, Roger, Worley, C. Clare, Alfaro, Emilio J., Prieto, Carlos Allende, Alonso-Santiago, Javier, Amos, Nicholas J., Ashley, Richard P., Balaguer-Núñez, Lola, Balbinot, Eduardo, Bellazzini, Michele, Benn, Chris R., Berlanas, Sara R., Bernard, Edouard J., Best, Philip, Bettoni, Daniela, Bianco, Andrea, Bishop, Georgia, Blomqvist, Michael, Boeche, Corrado, Bolzonella, Micol, Bonoli, Silvia, Bosma, Albert, Britavskiy, Nikolay, Busarello, Gianni, Caffau, Elisabetta, Cantat-Gaudin, Tristan, Castro-Ginard, Alfred, Couto, Guilherme, Carbajo-Hijarrubia, Juan, Carter, David, Casamiquela, Laia, Conrado, Ana M., Corcho-Caballero, Pablo, Costantin, Luca, Deason, Alis, de Burgos, Abel, De Grandi, Sabrina, Di Matteo, Paola, Domínguez-Gómez, Jesús, Dorda, Ricardo, Drake, Alyssa, Dutta, Rajeshwari, Erkal, Denis, Feltzing, Sofia, Ferré-Mateu, Anna, Feuillet, Diane, Figueras, Francesca, Fossat, Matteo, Franciosin, Elena, Frasca, Antonio, Fumagalli, Michele, Gallazzi, Anna, García-Benito, Rubén, Fusillo, Nicola Gentile, Gebran, Marwan, Gilbert, James, Gledhill, T. M., Delgado, Rosa M. González, Greimel, Robert, Guarcello, Mario Giuseppe, Guerra, Jose, Gullieuszik, Marco, Haines, Christopher P., Hardcastle, Martin J., Harris, Amy, Haywood, Misha, Helmi, Amina, Hernandez, Nauzet, Herrero, Artemio, Hughes, Sarah, Irsic, Vid, Jablonka, Pascale, Jarvis, Matt J., Jordi, Carme, Kondapally, Rohit, Kordopatis, Georges, Krogager, Jens-Kristian, La Barbera, Francesco, Lam, Man I, Larsen, Søren S., Lemasle, Bertrand, Lewis, Ian J., Lhomé, Emilie, Lind, Karin, Lodi, Marcello, Longobardi, Alessia, Lonoce, Ilaria, Magrin, Laura, Apellániz, Jesús Maíz, Marchal, Olivier, Marco, Amparo, Martin, Nicolas F., Matsuno, Tadafumi, Maurogordato, Sophie, Merluzzi, Paola, Miralda-Escudé, Jordi, Molinari, Emilio, Monari, Giacomo, Morelli, Lorenzo, Mottram, Christopher J., Naylor, Tim, Negueruela, Ignacio, Oñorbe, Jose, Pancino, Elena, Peirani, Sébastien, Peletier, Reynier F., Pozzetti, Lucia, Rainer, Monica, Ramos, Pau, Read, Shaun C., Rossi, Elena Maria, Röttgering, Huub J. A., Rubiño-Martín, Jose Alberto, Montes, Jose Sabater, Juan, José San, Sanna, Nicoletta, Schallig, Ellen, Schiavon, Ricardo P., Schultheis, Mathias, Serra, Paolo, Shimwell, Timothy W., Simón-Díaz, Sergio, Smith, Russell J., Sordo, Rosanna, Sorini, Daniele, Soubiran, Caroline, Starkenburg, Else, Steele, Iain A., Stott, John, Stuik, Remko, Tolstoy, Eline, Tortora, Crescenzo, Tsantaki, Maria, Van der Swaelmen, Mathieu, van Weeren, Reinout J., Vergani, Daniela, Verheijen, Marc A. W., Verro, Kristiina, Vink, Jorick S., Vioque, Miguel, Walcher, C. Jakob, Walton, Nicholas A., Wegg, Christopher, Weijmans, Anne-Marie, Williams, Wendy L., Wilson, Andrew J., Wright, Nicholas J., Xylakis-Dornbusch, Theodora, Youakim, Kris, Zibetti, Stefano, Zurita, Cristina
WEAVE, the new wide-field, massively multiplexed spectroscopic survey facility for the William Herschel Telescope, will see first light in late 2022. WEAVE comprises a new 2-degree field-of-view prime-focus corrector system, a nearly 1000-multiplex f
Externí odkaz:
http://arxiv.org/abs/2212.03981
Autor:
Pérez-Ràfols, Ignasi, Pieri, Matthew M., Blomqvist, Michael, Morrison, Sean, Som, Debopam, Cuceu, Andrei
We present the first clustering measurement of Strong Blended Lyman $\alpha$ (SBLA) absorption systems by measuring their cross-correlation with the Lyman $\alpha$ forest. SBLAs are a new population of absorbers detected within the Lyman $\alpha$ for
Externí odkaz:
http://arxiv.org/abs/2210.02973
Autor:
Youles, Samantha, Bautista, Julian E., Font-Ribera, Andreu, Bacon, David, Rich, James, Brooks, David, Davis, Tamara M., Dawson, Kyle, Dhungana, Govinda, Doel, Peter, Fanning, Kevin, Gaztañaga, Enrique, Gontcho, Satya Gontcho A, Gonzalez-Morales, Alma X., Guy, Julien, Honscheid, Klaus, Iršič, Vid, Kehoe, Robert, Kirkby, David, Kisner, Theodore, Landriau, Martin, Guillou, Laurent Le, Levi, Michael E., de la Macorra, Axel, Martini, Paul, Muñoz-Gutiérrez, Andrea, Palanque-Delabrouille, Nathalie, Pérez-Ràfols, Ignasi, Poppett, Claire, Ramírez-Pérez, César, Schubnell, Michael, Tarlé, Gregory, Walther, Michael
Publikováno v:
Monthly Notices of the Royal Astronomical Society 516 (2022) 421-433
Using synthetic Lyman-$\alpha$ forests from the Dark Energy Spectroscopic Instrument (DESI) survey, we present a study of the impact of errors in the estimation of quasar redshift on the Lyman-$\alpha$ correlation functions. Estimates of quasar redsh
Externí odkaz:
http://arxiv.org/abs/2205.06648
Autor:
Queiroz, Carolina, Abramo, L. Raul, Rodrigues, Natália V. N., Pérez-Ràfols, Ignasi, Martínez-Solaeche, Ginés, Hernán-Caballero, Antonio, Hernández-Monteagudo, Carlos, Lumbreras-Calle, Alejandro, Pieri, Matthew M., Morrison, Sean S., Bonoli, Silvia, Chaves-Montero, Jonás, Chies-Santos, Ana L., Díaz-García, L. A., Fernandez-Soto, Alberto, Delgado, Rosa M. González, Alcaniz, Jailson, Benítez, Narciso, Cenarro, A. Javier, Civera, Tamara, Dupke, Renato A., Ederoclite, Alessandro, López-Sanjuan, Carlos, Marín-Franch, Antonio, de Oliveira, Claudia Mendes, Moles, Mariano, Sodré Jr., Laerte, Taylor, Keith, Varela, Jesús, Ramió, Héctor Vázquez
In this series of papers, we employ several machine learning (ML) methods to classify the point-like sources from the miniJPAS catalogue, and identify quasar candidates. Since no representative sample of spectroscopically confirmed sources exists at
Externí odkaz:
http://arxiv.org/abs/2202.00103