Zobrazeno 1 - 10
of 293
pro vyhledávání: '"McMahon, Richard G."'
Autor:
Pâris, Isabelle, Petitjean, Patrick, Ross, Nicholas P., Myers, Adam D., Aubourg, Éric, Streblyanska, Alina, Bailey, Stephen, Armengaud, Éric, Palanque-Delabrouille, Nathalie, Yèche, Christophe, Hamann, Fred, Strauss, Michael A., Albareti, Franco D., Bovy, Jo, Bizyaev, Dmitry, Niel Brandt, W., Brusa, Marcella, Buchner, Johannes, Comparat, Johan, Croft, Rupert A. C., Dwelly, Tom, Fan, Xiaohui, Font-Ribera, Andreu, Ge, Jian, Georgakakis, Antonis, Hall, Patrick B., Jiang, Linhua, Kinemuchi, Karen, Malanushenko, Elena, Malanushenko, Viktor, McMahon, Richard G., Menzel, Marie-Luise, Merloni, Andrea, Nandra, Kirpal, Noterdaeme, Pasquier, Oravetz, Daniel, Pan, Kaike, Pieri, Matthew M., Prada, Francisco, Salvato, Mara, Schlegel, David J., Schneider, Donald P., Simmons, Audrey, Viel, Matteo, Weinberg, David H., Zhu, Liu
We present the Data Release 12 Quasar catalog (DR12Q) from the Baryon Oscillation Spectroscopic Survey (BOSS) of the Sloan Digital Sky Survey III. This catalog includes all SDSS-III /BOSS objects that were spectroscopically targeted as quasar candida
Externí odkaz:
http://hdl.handle.net/10150/622879
http://arizona.openrepository.com/arizona/handle/10150/622879
http://arizona.openrepository.com/arizona/handle/10150/622879
Autor:
Liao, Wei-Ting, Chen, Yu-Ching, Liu, Xin, Holgado, A. Miguel, Guo, Hengxiao, Gruendl, Robert, Morganson, Eric, Shen, Yue, Davis, Tamara, Kessler, Richard, Martini, Paul, McMahon, Richard G., Allam, Sahar, Annis, James, Avila, Santiago, Banerji, Manda, Bechtol, Keith, Bertin, Emmanuel, Brooks, David, Buckley-Geer, Elizabeth, Rosell, Aurelio Carnero, Kind, Matias Carrasco, Carretero, Jorge, Castander, Francisco Javier, Cunha, Carlos, D'Andrea, Chris, da Costa, Luiz, Davis, Christopher, De Vicente, Juan, Desai, Shantanu, Diehl, H. Thomas, Doel, Peter, Eifler, Tim, Evrard, August, Flaugher, Brenna, Fosalba, Pablo, Frieman, Josh, Garcia-Bellido, Juan, Gaztanaga, Enrique, Glazebrook, Karl, Gruen, Daniel, Gschwend, Julia, Gutierrez, Gaston, Hartley, Will, Hollowood, Devon L., Honscheid, Klaus, Hoyle, Ben, James, David, Krause, Elisabeth, Kuehn, Kyler, Lima, Marcos, Maia, Marcio, Marshall, Jennifer, Menanteau, Felipe, Miquel, Ramon, Malagón, Andrés Plazas, Roodman, Aaron, Sanchez, Eusebio, Scarpine, Vic, Schubnell, Michael, Serrano, Santiago, Smith, Mathew, Smith, R. Chris, Soares-Santos, Marcelle, Sobreira, Flavia, Suchyta, Eric, Swanson, Molly, Tarle, Gregory, Vikram, Vinu, Walker, Alistair, Collaboration, the DES
Publikováno v:
Monthly Notices of the Royal Astronomical Society, Volume 500, Issue 3, pp.4025-4041 (2021)
Binary supermassive black holes (BSBHs) are expected to be a generic byproduct from hierarchical galaxy formation. The final coalescence of BSBHs is thought to be the loudest gravitational wave (GW) siren, yet no confirmed BSBH is known in the GW-dom
Externí odkaz:
http://arxiv.org/abs/2008.12317
We present XMM-Newton X-ray observations and analysis of three DES $z>6.5$ quasars (VDES J0020$-$3653 at $z=6.824$, VDES J0244$-$5008 at $z=6.724$ and VDES J0224$-$4711 at $z=6.526$) and six other quasars with $6.438 < z < 6.747$ from the XMM-Newton
Externí odkaz:
http://arxiv.org/abs/1910.04122
Autor:
Shu, Yiping, Koposov, Sergey E., Evans, N. Wyn, Belokurov, Vasily, McMahon, Richard G., Auger, Matthew W., Lemon, Cameron A.
We present two catalogues of active galactic nucleus (AGN) candidates selected from the latest data of two all-sky surveys -- Data Release 2 (DR2) of the \emph{Gaia} mission and the unWISE catalogue of the \emph{Wide-field Infrared Survey Explorer} (
Externí odkaz:
http://arxiv.org/abs/1909.02010
Autor:
Pons, Estelle, McMahon, Richard G., Simcoe, Robert A., Banerji, Manda, Hewett, Paul C., Reed, Sophie L.
We present the discovery of a new $z \sim 6.8$ quasar discovered with the near-IR VISTA Hemisphere Survey (VHS) which has been spectroscopically confirmed by the ESO New Technology Telescope (NTT) and the Magellan telescope. This quasar has been sele
Externí odkaz:
http://arxiv.org/abs/1812.02481
Publikováno v:
MNRAS 483 (2019) 4242-4258
We report the discovery and spectroscopic confirmation of 22 new gravitationally lensed quasars found using $\textit{Gaia}$ data release 2. The selection was made using several techniques: multiple $\textit{Gaia}$ detections around objects in quasar
Externí odkaz:
http://arxiv.org/abs/1810.04480
We report the discovery, spectroscopic confirmation and preliminary characterisation of 24 gravitationally lensed quasars identified using Gaia observations. Candidates were selected in the Pan-STARRS footprint with quasar-like WISE colours or as pho
Externí odkaz:
http://arxiv.org/abs/1803.07601
Gaia's exceptional resolution (FWHM $\sim$ 0.1$^{\prime\prime}$) allows identification and cataloguing of the multiple images of gravitationally lensed quasars. We investigate a sample of 49 known lensed quasars in the SDSS footprint, with image sepa
Externí odkaz:
http://arxiv.org/abs/1709.08976
Autor:
Ostrovski, Fernanda, 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 E.
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-STARRS and WISE photometry to the
Externí odkaz:
http://arxiv.org/abs/1709.08975
Autor:
Rumbaugh, Nick, Shen, Yue, Morganson, Eric, Liu, Xin, Banerji, Manda, McMahon, Richard G., Abdalla, Filipe, Benoit-Levy, Aurelien, Bertin, Emmanuel, Brooks, David, Buckley-Geer, Elizabeth, Capozzi, Diego, Rosell, Aurelio Carnero, Kind, M. Carrasco, Carretero, Jorge, Cunha, Carlos, D'Andrea, Chris, da Costa, Luiz, DePoy, Darren, Desai, Shantanu, Doel, Peter, Frieman, Joshua, Garcia-Bellido, Juan, Gruen, Daniel, Gruendl, Robert, Gschwend, Julia, Gutierrez, Gaston, Honscheid, Klaus, James, David, Kuehn, Kyler, Kuhlmann, Steve, Kuropatkin, Nikolay, Lima, Marcos, Maia, Marcio, Marshall, Jennifer, Martini, Paul, Menanteau, Felipe, Malagon, Andres Plazas, Reil, Kevin, Roodman, Aaron, Sanchez, Eusebio, Scarpine, Vic, Schindler, Rafe, Schubnell, Michael, Sheldon, Erin, Smith, Mathew, Soares-Santos, Marcelle, Sobreira, Flavia, Suchyta, Eric, Swanson, Molly, Walker, Alistair, Wester, William
We perform a systematic search for long-term extreme variability quasars (EVQs) in the overlapping Sloan Digital Sky Survey (SDSS) and 3-Year Dark Energy Survey (DES) imaging, which provide light curves spanning more than 15 years. We identified ~100
Externí odkaz:
http://arxiv.org/abs/1706.07875