Zobrazeno 1 - 10
of 89
pro vyhledávání: '"Förster, Francisco"'
In this work, we propose a deep learning-based classification model of astronomical objects using alerts reported by the Zwicky Transient Facility (ZTF) survey. The model takes as inputs sequences of stamp images and metadata contained in each alert,
Externí odkaz:
http://arxiv.org/abs/2405.15073
Autor:
Silva-Farfán, Javier, Förster, Francisco, Moriya, Takashi J., Hernández-García, L., Arancibia, A. M. Muñoz, Sánchez-Sáez, P., Anderson, Joseph P., Tonry, John L., Clocchiatti, Alejandro
We report an analysis of a sample of 186 spectroscopically confirmed Type II supernova (SN) light curves (LCs) obtained from a combination of Zwicky Transient Facility (ZTF) and Asteroid Terrestrial-impact Last Alert System (ATLAS) observations. We i
Externí odkaz:
http://arxiv.org/abs/2404.12620
Autor:
Cabrera-Vives, Guillermo, Bolivar, César, Förster, Francisco, Arancibia, Alejandra M. Muñoz, Pérez-Carrasco, Manuel, Reyes, Esteban
Publikováno v:
ICML 2023 Workshop on Machine Learning for Astrophysics
Time domain astronomy is advancing towards the analysis of multiple massive datasets in real time, prompting the development of multi-stream machine learning models. In this work, we study Domain Adaptation (DA) for real/bogus classification of astro
Externí odkaz:
http://arxiv.org/abs/2308.07538
Autor:
Reyes-Jainaga, Ignacio, Förster, Francisco, Arancibia, Alejandra M. Muñoz, Cabrera-Vives, Guillermo, Bayo, Amelia, Bauer, Franz E., Arredondo, Javier, Reyes, Esteban, Pignata, Giuliano, Mourão, A. M., Silva-Farfán, Javier, Galbany, Lluís, Álvarez, Alex, Astorga, Nicolás, Castellanos, Pablo, Gallardo, Pedro, Moya, Alberto, Rodríguez, Diego
In recent years, automatic classifiers of image cutouts (also called "stamps") have shown to be key for fast supernova discovery. The Vera C. Rubin Observatory will distribute about ten million alerts with their respective stamps each night, enabling
Externí odkaz:
http://arxiv.org/abs/2304.13080
Autor:
Lu, Jing, Hsiao, Eric Y., Phillips, Mark M., Burns, Christopher R., Ashall, Chris, Morrell, Nidia, Ng, Lawrence, Kumar, Sahana, Shahbandeh, Melissa, Hoeflich, Peter, Baron, E., Uddin, Syed, Stritzinger, Maximilian D., Suntzeff, Nicholas B., Baltay, Charles, Davis, Scott, Diamond, Tiara R., Folatelli, Gaston, Förster, Francisco, Gagné, Jonathan, Galbany, Lluís, Gall, Christa, González-Gaitán, Santiago, Holmbo, Simon, Kirshner, Robert P., Krisciunas, Kevin, Marion, G. H., Perlmutter, Saul, Pessi, Priscila J., Piro, Anthony L., Rabinowitz, David, Ryder, Stuart D., Sand, David J.
We present the largest and most homogeneous collection of near-infrared (NIR) spectra of Type Ia supernovae (SNe Ia): 339 spectra of 98 individual SNe obtained as part of the Carnegie Supernova Project-II. These spectra, obtained with the FIRE spectr
Externí odkaz:
http://arxiv.org/abs/2211.05998
Autor:
Förster, Francisco, Arancibia, Alejandra M. Muñoz, Reyes, Ignacio, Gagliano, Alexander, Britt, Dylan, Cuellar-Carrillo, Sara, Figueroa-Tapia, Felipe, Polzin, Ava, Yousef, Yara, Arredondo, Javier, Rodríguez-Mancini, Diego, Correa-Orellana, Javier, Bayo, Amelia, Bauer, Franz E., Catelan, Márcio, Cabrera-Vives, Guillermo, Dastidar, Raya, Estévez, Pablo A., Pignata, Giuliano, Hernandez-Garcia, Lorena, Huijse, Pablo, Reyes, Esteban, Sánchez-Sáez, Paula, Ramirez, Mauricio, Grandón, Daniela, Pineda-García, Jonathan, Chabour-Barra, Francisca, Silva-Farfán, Javier
We present DELIGHT, or Deep Learning Identification of Galaxy Hosts of Transients, a new algorithm designed to automatically and in real-time identify the host galaxies of extragalactic transients. The proposed algorithm receives as input compact, mu
Externí odkaz:
http://arxiv.org/abs/2208.04310
In astronomical surveys, such as the Zwicky Transient Facility, supernovae (SNe) are relatively uncommon objects compared to other classes of variable events. Along with this scarcity, the processing of multi-band light-curves is a challenging task d
Externí odkaz:
http://arxiv.org/abs/2201.08482
Autor:
Medina, N., Borissova, J., Kurtev, R., Alonso-García, J., Román-Zúñiga, Carlos G., Bayo, A., Kounkel, Marina, Roman-Lopes, Alexandre, Lucas, P. W., Covey, K. R., Förster, Francisco, Minniti, Dante, Adame, Lucia, Hernández, Jesús
We present a catalog of 167 newly discovered, irregular variables spanning a $\sim$7 deg${^2}$ area that encompasses the G 305 star-forming complex, one of the most luminous giant H II regions in the Galaxy. We aim to unveil and characterize the youn
Externí odkaz:
http://arxiv.org/abs/2104.02200
Autor:
Wang, Lingzhi, Contreras, Carlos, Hu, Maokai, Hamuy, Mario A., Hsiao, Eric Y., Sand, David J., Anderson, Joseph P., Ashall, Chris, Burns, Christopher R., Chen, Juncheng, Diamond, Tiara R., Davis, Scott, Förster, Francisco, Galbany, Lluís, González-Gaitán, Santiago, Gromadzki, Mariusz, Hoeflich, Peter, Li, Wenxiong, Marion, G. H., Morrell, Nidia, Pignata, Giuliano, Prieto, Jose L., Phillips, Mark M., Shahbandeh, Melissa, Suntzeff, Nicholas, Valenti, Stefano, Wang, Lifan, Wang, Xiaofeng, Young, D. R., Yu, Lixin, Zhang, Jujia
Supernova (SN) 2017cbv in NGC 5643 is one of a handful of type Ia supernovae (SNe~Ia) reported to have excess blue emission at early times. This paper presents extensive $BVRIYJHK_s$-band light curves of SN 2017cbv, covering the phase from $-16$ to $
Externí odkaz:
http://arxiv.org/abs/2009.11415
Autor:
Carrasco-Davis, Rodrigo, Reyes, Esteban, Valenzuela, Camilo, Förster, Francisco, Estévez, Pablo A., Pignata, Giuliano, Bauer, Franz E., Reyes, Ignacio, Sánchez-Sáez, Paula, Cabrera-Vives, Guillermo, Eyheramendy, Susana, Catelan, Márcio, Arredondo, Javier, Castillo-Navarrete, Ernesto, Rodríguez-Mancini, Diego, Ruz-Mieres, Daniela, Moya, Alberto, Sabatini-Gacitúa, Luis, Sepúlveda-Cobo, Cristóbal, Mahabal, Ashish A., Silva-Farfán, Javier, Camacho-Iñiquez, Ernesto, Galbany, Lluís
We present a real-time stamp classifier of astronomical events for the ALeRCE (Automatic Learning for the Rapid Classification of Events) broker. The classifier is based on a convolutional neural network, trained on alerts ingested from the Zwicky Tr
Externí odkaz:
http://arxiv.org/abs/2008.03309