Navegação Ciências Exatas e da Terra por Autor "Ostrovski, F."

Resultados 1-9 de 9

    • DES J0454−4448 : discovery of the first luminous z ≥ 6 quasar from the Dark Energy Survey 

      Reed, Sophie L.; McMahon, Richard G.; Banerji, M.; Becker, George D.; Gonzalez-Solares, Eduardo; Martini, Paul; Ostrovski, F.; Rauch, Michael; Abbott, Timothy M. C.; Abdalla, Filipe B.; Allam, Sahar S.; Benoit-Lévy, Aurélien; Bertin, Emmanuel; Buckley-Geer, Elizabeth; Burke, David Lyle; Costa, Luiz N. da; Carnero Rosell, Aurelio; D'Andrea, Christopher B.; DePoy, Darren L.; Desai, S.; Diehl, H. Thomas; Doel, Peter; Cunha, Carlos Eduardo; Estrada, Juan; Evrard, August E.; Fausti Neto, Angelo; Finley, David A.; Fosalba Vela, Pablo; Frieman, Joshua A.; Gruen, Daniel; Honscheid, K.; James, David J.; Kent, Stephen M.; Kuehn, Kyler; Kuropatkin, Nikolay P.; Lahav, Ofer; Maia, Marcio Antonio Geimba; Makler, Martín; Marshall, Jennifer L.; Merritt, K. Wyatt; Miquel, Ramon; Mohr, Joseph J.; Nord, Brian Dennis; Ogando, Ricardo L.C.; Plazas Malagón, Andrés Alejandro; Romer, Anita K.; Roodman, Aaron; Rykoff, Eli; Sako, Masao; Sanchez-Alvaro, Eusebio; Santiago, Basilio Xavier; Schubnell, Michael; Sevilla Noarbe, Ignacio; Smith, Robert Christopher; Soares-Santos, Marcelle; Suchyta, Eric; Swanson, Molly E. C.; Tarle, Gregory; Thomas, D.; Tucker, Douglas L.; Walker, Alistair; Wechsler, Risa H. (2015) [Artigo de periódico]
      We present the first results of a survey for high-redshift, z ≥ 6, quasars using izY multicolour photometric observations from the Dark Energy Survey (DES). Here we report the discovery and spectroscopic confirmation of ...

    • Detecting massive galaxies at high redshift using the Dark Energy Survey 

      Davies, L. J. M.; Maraston, Claudia; Thomas, D.; Capozzi, Diego; Wechsler, Risa H.; Busha, M. T.; Banerji, M.; Ostrovski, F.; Papovich, Casey; Santiago, Basilio Xavier; Nichol, Robert C.; Maia, Marcio Antonio Geimba; Costa, Luiz N. da (2013) [Artigo de periódico]
      The Dark Energy Survey (DES) will be unprecedented in its ability to probe exceptionally large cosmic volumes to relatively faint optical limits. Primarily designed for the study of comparatively low-redshift (z<2) galaxies ...

    • Discovery of two gravitationally lensed quasars in the Dark Energy Survey 

      Agnello, Adriano; Treu, Tommaso; Ostrovski, F.; Schechter, Paul L.; Buckley-Geer, Elizabeth; Lin, H.; Auger, Matthew W.; Courbin, Frederic Y. M.; Fassnacht, Christopher D.; Frieman, Joshua A.; Kuropatkin, Nikolay P.; Marshall, Phillip J.; McMahon, Richard G.; Meylan, Georges; More, Andrew Mills; Suyu, Sherry; Rusu, Cristian Eduard; Finley, David A.; Abbott, Timothy M. C.; Abdalla, Filipe B.; Allam, Sahar S.; Annis, James T.; Banerji, M.; Benoit-Lévy, Aurélien; Bertin, Emmanuel; Brooks, D.; Burke, David Lyle; Carnero Rosell, Aurelio; Carrasco Kind, Matías; Carretero Palacios, Jorge; Cunha, Carlos Eduardo; D'Andrea, Christopher B.; Costa, Luiz N. da; Desai, S.; Diehl, H. Thomas; Dietrich, Jörg P.; Doel, Peter; Eifler, Tim; Estrada, Juan; Fausti Neto, Angelo; Flaugher, Brenna; Fosalba Vela, Pablo; Gerdes, David W.; Gruen, Daniel; Gutierrez, Gaston R.; Honscheid, K.; James, David J.; Kent, Stephen M.; Kuehn, Kyler; Kuropatkin, Nikolay P.; Lahav, Ofer; Lima, Marcos Vinicius Borges Teixeira; Maia, Marcio Antonio Geimba; March, Marisa Cristina; Marshall, Jennifer L.; Martini, Paul; Melchior, Peter M.; Miller, Christopher J.; Miquel, Ramon; Nichol, Robert C.; Ogando, Ricardo L.C.; Plazas Malagón, Andrés Alejandro; Reil, Kevin; Romer, Anita K.; Roodman, Aaron; Sako, Masao; Sanchez-Alvaro, Eusebio; Santiago, Basilio Xavier; Scarpine, Victor Emanuel; Schubnell, Michael; Sevilla Noarbe, Ignacio; Smith, Robert Christopher; Soares-Santos, Marcelle; Sobreira, Flávia; Suchyta, Eric; Swanson, Molly E. C.; Tarle, Gregory; Thaler, Jon J.; Tucker, Douglas L.; Walker, Alistair; Wechsler, Risa H.; Zhang, Yuanyuan (2015) [Artigo de periódico]
      We present spectroscopic confirmation of two new gravitationally lensed quasars, discovered in the Dark Energy Survey (DES) and Wide-field Infrared Survey Explorer (WISE) based on their multiband photometry and extended ...

    • OzDES multifibre spectroscopy for the Dark Energy Survey : 3-yr results and first data release 

      Childress, Michael; Ostrovski, F.; DES Collaboration (2017) [Artigo de periódico]
      We present results for the first three years of OzDES, a six year programme to obtain redshifts for objects in the Dark Energy Survey (DES) supernova fields using the 2dF fibre positioner and AAOmega spectrograph on the ...

    • Photometric redshift analysis in the Dark Energy Survey science verification data 

      Sánchez Alonso, Carles; Carrasco Kind, Matías; Lin, H.; Serra Ricart, Miquel; Abdalla, Filipe B.; Amara, Adam; Banerji, M.; Bonnet, Christopher Clive; Brunner, Robert J.; Capozzi, Diego; Carnero Rosell, Aurelio; Castander Serentill, Francisco Javier; Costa, Luiz N. da; Cunha, Carlos Eduardo; Fausti Neto, Angelo; Gerdes, David W.; Greisel, N.; Gschwend, Julia de Figueiredo; Hartley, William; Jouvel, Stéphanie; Lahav, Ofer; Lima, Marcos Vinicius Borges Teixeira; Maia, Marcio Antonio Geimba; Martí, P.; Ogando, Ricardo L.C.; Ostrovski, F.; Pellegrini, Paulo Sérgio de Souza; Rau, Markus Michael; Sadeh, Iftach; Seitz, Stella; Sevilla Noarbe, Ignacio; Sypniewski, Adam J.; Vicente, J. de; Abbott, Timothy M. C.; Allam, Sahar S.; Atlee, David; Bernstein, Gary M.; Bernstein, Joseph P.; Buckley-Geer, Elizabeth; Burke, David Lyle; Childress, Michael; Davis, Tamara M.; DePoy, Darren L.; Dey, Arjun; Desai, S.; Diehl, H. Thomas; Doel, Peter; Estrada, Juan; Evrard, August E.; Fernandez, Enrique; Finley, David A.; Flaugher, Brenna; Frieman, Joshua A.; Gaztañaga, Enrique; Glazebrook, Karl; Honscheid, K.; Kim, A. G.; Kuehn, Kyler; Kuropatkin, Nikolay P.; Lidman, Chris; Makler, Martín; Marshall, Jennifer L.; Nichol, Robert C.; Roodman, Aaron; Sanchez-Alvaro, Eusebio; Santiago, Basilio Xavier; Sako, Masao; Scalzo, Richard; Smith, Robert Christopher; Swanson, Molly E. C.; Tarle, Gregory; Thomas, D.; Tucker, Douglas L.; Uddin, Syed; Valdes, Francisco; Walker, Alistair; Yuan, Fang; Zuntz, J. (2014) [Artigo de periódico]
      We present results from a study of the photometric redshift performance of the Dark Energy Survey (DES), using the early data from a Science Verification period of observations in late 2012 and early 2013 that provided ...

    • A study of quasar selection in the supernova fields of the Dark Energy Survey 

      Tie, Suk Sien; Martini, Paul; Mudd, Dale; Ostrovski, F.; Reed, Sophie L.; Lidman, Chris; Kochanek, C.S.; Davis, Tamara M.; Sharp, Robert G.; Uddin, Syed; King, Anthea L.; Wester, William Carl; Tucker, Bradley; Tucker, Douglas L.; Buckley-Geer, Elizabeth; Carollo, Daniela; Childress, Michael; Glazebrook, Karl; Hinton, Samuel; Lewis, Geraint F.; Macaulay, Edward; O'Neill, C. R.; Abbott, Timothy M. C.; Abdalla, Filipe B.; Annis, James T.; Benoit-Lévy, Aurélien; Bertin, Emmanuel; Brooks, D.; Carnero Rosell, Aurelio; Carrasco Kind, Matías; Carretero Palacios, Jorge; Cunha, Carlos Eduardo; Costa, Luiz N. da; DePoy, Darren L.; Desai, S.; Doel, Peter; Eifler, Tim; Evrard, August E.; Finley, David A.; Flaugher, Brenna; Fosalba Vela, Pablo; Frieman, Joshua A.; García-Bellido, Juan; Gaztañaga, Enrique; Gerdes, David W.; Goldstein, Daniel Abraham; Gruen, Daniel; Gruendl, Robert A.; Gutierrez, Gaston R.; Honscheid, K.; James, David J.; Kuehn, Kyler; Kuropatkin, Nikolay P.; Lima, Marcos Vinicius Borges Teixeira; Maia, Marcio Antonio Geimba; Marshall, Jennifer L.; Menanteau, Felipe; Miller, Christopher J.; Miquel, Ramon; Nichol, Robert C.; Nord, Brian Dennis; Ogando, Ricardo L.C.; Plazas Malagón, Andrés Alejandro; Romer, Anita K.; Sanchez-Alvaro, Eusebio; Santiago, Basilio Xavier; Scarpine, Victor Emanuel; Schubnell, Michael; Sevilla Noarbe, Ignacio; Smith, Robert Christopher; Soares-Santos, Marcelle; Sobreira, Flávia; Suchyta, Eric; Swanson, Molly E. C.; Tarle, Gregory; Thomas, D.; Walker, Alistair; DES Collaboration (2017) [Artigo de periódico]
      We present a study of quasar selection using the supernova fields of the Dark Energy Survey (DES). We used a quasar catalog from an overlapping portion of the SDSS Stripe 82 region to quantify the completeness and efficiency ...

    • The Dark Energy Survey : more than dark energy – an overview 

      Abbott, Timothy M. C.; Abdalla, Filipe B.; Aleksíc, Jelena; Allam, Sahar S.; Amara, Adam; Bacon, David J.; Balbinot, Eduardo; Banerji, M.; Bechtol, Keith; Benoit-Lévy, Aurélien; Bernstein, Gary M.; Bertin, Emmanuel; Blazek, Jonathan A.; Bonnett, Christopher; Bridle, Sarah Louise; Brooks, D.; Brunner, Robert J.; Buckley-Geer, E.; Burke, David Lyle; Caminha, Gabriel Bartosch; Capozzi, Diego; Carlsen, J.; Carnero Rosell, Aurelio; Carollo, Marcella; Carrasco Kind, Matías; Carretero Palacios, Jorge; Castander Serentill, Francisco Javier; Clerkin, L.; Collett, Thomas E.; Conselice, Christopher J.; Crocce, Martin; Cunha, Carlos Eduardo; D'Andrea, Christopher B.; Costa, Luiz N. da; Davis, Tamara M.; Desai, S.; Diehl, H. Thomas; Dietrich, Jörg P.; Dodelson, Scott; Doel, Peter; Drlica-Wagner, Alex; Estrada, Juan; Etherington, James; Evrard, August E.; Fabbri, Joanna; Finley, David A.; Flaugher, Brenna; Foley, Ryan Joseph; Fosalba Vela, Pablo; Frieman, Joshua A.; García-Bellido, Juan; Gaztañaga, Enrique; Gerdes, David W.; Giannantonio,Tommaso; Goldstein, Daniel Abraham; Gruen, Daniel; Gruendl, Robert A.; Guarnieri, P.; Gutierrez, Gaston R.; Hartley, William; Honscheid, K. (Klaus); Jain, Bhuvnesh; James, David J.; Jeltema, Tesla E.; Jouvel, Stéphanie; Kessler, Richard S.; King, Anthea L.; Kirk, Donnacha; Kron, Richard G.; Kuehn, Kyler; Kuropatkin, Nikolay P.; Lahav, Ofer; Li, T. S.; Lima, Marcos Vinicius Borges Teixeira; Lin, H.; Maia, Marcio Antonio Geimba; Makler, Martín; Manera, Marc; Maraston, Claudia; Marshall, Jennifer L.; Martini, Paul; McMahon, Richard G.; Melchior, Peter M.; Merson, Alexander I.; Miller, Christopher J.; Miquel, Ramon; Mohr, Joseph J.; Morice-Atkinson, Xan; Naidoo, Krishna; Neilsen, Eric H.; Nichol, Robert C.; Nord, Brian Dennis; Ogando, Ricardo L.C.; Ostrovski, F.; Palmese, A.; Papadopoulos, Andreas; Peiris, Hiranya V.; Peoples, John; Percival, Will J.; Plazas Malagón, Andrés Alejandro; Reed, Sophie L.; Refregier, Alexandre; Romer, Anita K.; Roodman, Aaron; Ross, A.J.; Rozo, Eduardo; Rykoff, Eli; Sadeh, Iftach; Sako, Masao; Sánchez Alonso, Carles; Sanchez-Alvaro, Eusebio; Santiago, Basilio Xavier; Scarpine, Victor Emanuel; Schubnell, Michael; Sevilla Noarbe, Ignacio; Sheldon, Erin; Smith, Matthew Wilson L.; Smith, Robert Christopher; Soares-Santos, Marcelle; Sobreira, Flávia; Soumagnac, Maayane Tamar; Suchyta, Eric; Sullivan, Mark; Swanson, Molly E. C.; Tarle, Gregory; Thaler, Jon J.; Thomas, D.; Thomas, Rollin C.; Tucker, Douglas L.; Vieira, J. D.; Vikram, Vinu; Walker, Alistair; Wechsler, Risa H.; Weller, Jochen; Wester, William Carl; Whiteway, L.; Wilcox, Harry George; Yanny, Brian; Zhang, Yuanyuan; Zuntz, J.; DES Collaboration (2016) [Artigo de periódico]
      This overview paper describes the legacy prospect and discovery potential of the Dark Energy Survey (DES) beyond cosmological studies, illustrating it with examples from the DES early data. DES is using a wide-field camera ...

    • The discovery of a five-image lensed quasar at z = 3.34 using PanSTARRS1 and Gaia 

      Ostrovski, F.; Lemon, Cameron A.; Auger, Matthew W.; McMahon, Richard G.; Fassnacht, Christopher D.; Chen, Geoff C.-F.; Connolly, Andrew J.; Koposov, Sergey E.; Pons, Estelle; Reed, Sophie L.; Rusu, Cristian Eduard (2018) [Artigo de periódico]
      We report the discovery, spectroscopic confirmation and mass modelling of the gravitationally lensed quasar system PS J0630−1201. The lens was discovered by matching a photometric quasar catalogue compiled from Pan-STARRS1 ...

    • VDES J2325−5229 a z = 2.7 gravitationally lensed quasar discovered using morphology-independent supervised machine learning 

      Ostrovski, F.; McMahon, Richard G.; Connolly, Andrew J.; Lemon, Cameron A.; Auger, Matthew W.; Banerji, M.; Hung, Johnathan M.; Koposov, Sergey E.; Lidman, Chris; Reed, Sophie L.; Allam, Sahar S.; Benoit-Lévy, Aurélien; Bertin, Emmanuel; Brooks, D.; Buckley-Geer, Elizabeth; Carnero Rosell, Aurelio; Carrasco Kind, Matías; Carretero Palacios, Jorge; Cunha, Carlos Eduardo; Costa, Luiz N. da; Desai, S.; Diehl, H. Thomas; Dietrich, Jörg P.; Evrard, August E.; Finley, David A.; Flaugher, Brenna; Fosalba Vela, Pablo; Frieman, Joshua A.; Gerdes, David W.; Goldstein, Daniel Abraham; Gruen, Daniel; Gruendl, Robert A.; Gutierrez, Gaston R.; Honscheid, K.; James, David J.; Kuehn, Kyler; Kuropatkin, Nikolay P.; Lima, Marcos Vinicius Borges Teixeira; Lin, H.; Maia, Marcio Antonio Geimba; Marshall, Jennifer L.; Martini, Paul; Melchior, Peter M.; Miquel, Ramon; Ogando, Ricardo L.C.; Plazas Malagón, Andrés Alejandro; Reil, Kevin; Romer, Kathy; Sanchez-Alvaro, Eusebio; Santiago, Basilio Xavier; Scarpine, Victor Emanuel; Sevilla Noarbe, Ignacio; Soares-Santos, Marcelle; Sobreira, Flávia; Suchyta, Eric; Tarle, Gregory; Thomas, D.; Tucker, Douglas L.; Walker, Alistair (2017) [Artigo de periódico]
      We present the discovery and preliminary characterization of a gravitationally lensed quasar with a source redshift zs = 2.74 and image separation of 2.9 arcsec lensed by a foreground zl = 0.40 elliptical galaxy. Since ...