Zobrazeno 31 - 40
of 81
pro vyhledávání: '"Catherine J. Grier"'
Autor:
Bradley M. Peterson, Hu Zou, Karen Kinemuchi, Sarah Eftekharzadeh, Jean-Paul Kneib, Feng Li, Zefeng Li, Kyle S. Dawson, Jonathan R. Trump, Daniel Oravetz, Yue Shen, Linhua Jiang, Siyao Jia, D. A. Starkey, Donald P. Schneider, M. Vivek, Ian D. McGreer, Y. Homayouni, Catherine J. Grier, Keith Horne, Tianmeng Zhang, Kaike Pan, Yuguang Chen, W. N. Brandt, Patrick Petitjean, Yucheng Guo, Patrick B. Hall, Jesse Rogerson, Audrey Oravetz, Paul J. Green, Luis C. Ho, Dmitry Bizyaev, Jennifer I-Hsiu Li, K. A. Ponder, Jundan Nie
Publikováno v:
The Astrophysical Journal Letters
The Astrophysical Journal Letters, 2019, 883, ⟨10.3847/2041-8213/ab3e0f⟩
The Astrophysical Journal Letters, 2019, 883, ⟨10.3847/2041-8213/ab3e0f⟩
We investigate the effects of extended multi-year light curves (9-year photometry and 5-year spectroscopy) on the detection of time lags between the continuum variability and broad-line response of quasars at z>~1.5, and compare with the results usin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8d32d5d1b5bc53171fe6b39a3eedd130
https://hal-insu.archives-ouvertes.fr/insu-03666720
https://hal-insu.archives-ouvertes.fr/insu-03666720
Autor:
Catherine J. Grier, Patrick B. Hall, Adam D. Myers, W. N. Brandt, M. Vivek, N. Filiz Ak, John J. Ruan, Birong Luo, Sameer, P. Rodriguez Hidalgo, Scott F. Anderson, D. P. Schneider, N. S. Ahmed
We report on an X-ray and optical/UV study of eight Broad Absorption Line (BAL) to non-BAL transforming quasars at $z\,\approx\,$1.7-2.2 over 0.29-4.95 rest-frame years with at least three spectroscopic epochs for each quasar from the SDSS, BOSS, $Ge
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fafe422a9fe18711f05d5900bb3184f0
https://avesis.erciyes.edu.tr/publication/details/a1a46184-9698-48f0-9d35-f43679b425a3/oai
https://avesis.erciyes.edu.tr/publication/details/a1a46184-9698-48f0-9d35-f43679b425a3/oai
Autor:
W. N. Brandt, Kaike Pan, Jonathan R. Trump, M. Vivek, Z. S. Hemler, Audrey Oravetz, Donald P. Schneider, Yue Shen, Daniel Oravetz, Catherine J. Grier, Keith Horne, Dmitry Bizyaev, Patrick B. Hall
We systematically investigate short-timescale ($
Comment: 26 pages, 12 figures, 4 tables. Accepted for publication in ApJ
Comment: 26 pages, 12 figures, 4 tables. Accepted for publication in ApJ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c8551adb71180814abe4a1711fe138c5
http://arxiv.org/abs/1811.00010
http://arxiv.org/abs/1811.00010
Autor:
S. M. McGraw, G. A. Borman, E. Kilerci-Eser, D. N. Okhmat, Jessie C. Runnoe, Jan Skowron, E. Tamajo, D. A. Starkey, G. V. Simonian, Michael S. Brotherton, Radosław Poleski, J. van Saders, Cassandra Lochhaas, J. S. Brown, Christopher A. Onken, Sarah Eftekharzadeh, M. C. Bottorff, R. Stoll, E. Portaluri, A. L. King, Alessandro Siviero, Stefano Valenti, Christopher S. Kochanek, Joseph Moody, C. D. Laney, Miao Li, Encarni Romero-Colmenero, Adrian M. Price-Whelan, Kevin V. Croxall, Wei Zhu, G. De Rosa, E. R. Manne-Nicholas, J. L. Prieto, N. G. Pulatova, Misty C. Bentz, Carolin Villforth, Marianne Vestergaard, C. Araya Salvo, J. E. Brown, R. Musso, M. L. Nguyen, Joseph M. Antognini, Christian Clanton, Hartmut Winkler, Keith Horne, Scott M. Adams, Benjamin J. Shappee, Michael D. Joner, K. Mogren, Eve Armstrong, F. MacInnis, Catherine J. Grier, M. Spencer, S. L. Fiorenza, Ying Zu, P. Ochner, Rachael M. Roettenbacher, Stefano Ciroi, Thomas G. Beatty, Bradley M. Peterson, Stacy Y. Kim, Daniel J. Stevens, Steven Villanueva, Aaron J. Barth, Ana M. Mosquera, D. Mudd, A. Pancoast, E. Dalla Bontà, Todd Boroson, J. Zastrow, Garrett Somers, D. M. Skowron, Kelly D. Denney, S. Rafter, J. S. Schimoia, N. Sherf, Mike Eracleous, B. Ou-Yang, J. Kellar, T. Hutchison, Liuyi Pei, Calen B. Henderson, Thomas W.-S. Holoien, A. Frassati, S. G. Sergeev, Jamie Tayar, Valentina Cracco, Zhiyuan Ma, C. Montouri, Carl T. Coker, M. Mason, Jaehan Bae, Michael Fausnaugh, Matthew T. Penny, Shai Kaspi, Richard W. Pogge, A. Bhattacharjee, G. La Mura, Y. Weiss, Keith Hawkins, S. V. Nazarov, Steven M. Crawford
We present the first results from a reverberation-mapping campaign undertaken during the first half of 2012, with additional data on one AGN (NGC 3227) from a 2014 campaign. Our main goals are (1) to determine the black hole masses from continuum-Hbe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f20f908e1e27aca3fe197cb4448d634c
https://resolver.caltech.edu/CaltechAUTHORS:20181023-074618295
https://resolver.caltech.edu/CaltechAUTHORS:20181023-074618295
Autor:
Jin-Ming Bai, Feige Wang, John D Timlin, Weimin Yi, Catherine J. Grier, Wenwen Zuo, Jinyi Yang, Xue-Bing Wu, Xiaohui Fan
Publikováno v:
The Astrophysical Journal. 893:95
Autor:
Patrick B. Hall, Donald P. Schneider, Luis C. Ho, Y. Homayouni, Yue Shen, Jonathan R. Trump, Jennifer I-Hsiu Li, D. A. Starkey, Keith Horne, W. N. Brandt, Catherine J. Grier
Publikováno v:
The Astrophysical Journal. 884:119
We investigate the performance of different methodologies that measure the time lag between broad-line and continuum variations in reverberation mapping data using simulated light curves that probe a range of cadence, time baseline, and signal-to-noi
Autor:
Kyle S. Dawson, Christopher S. Kochanek, Jenny E. Greene, Kaike Pan, Yue Shen, Jennifer I-Hsiu Li, Luis C. Ho, Jonathan R. Trump, Catherine J. Grier, Donald P. Schneider, W. N. Brandt, Keith Horne, Elena Malanushenko, Audrey Simmons, Dmitry Bizyaev, Daniel Oravetz
Funding: STFC grant ST/M001296/1 (KH). We present composite broad-line region (BLR) reverberation mapping lag measurements for Hα, Hβ, He II λ4686, and Mg II for a sample of 144, z ≲ 1 quasars from the Sloan Digital Sky Survey Reverberation Mapp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d888249e08a33d6170201ffe30d8d4bb
https://hdl.handle.net/10023/11708
https://hdl.handle.net/10023/11708
Autor:
John J. Ruan, W. N. Brandt, Nurten Filiz Ak, Kyle S. Dawson, Suzanne L. Hawley, Michael R. Blanton, Jessie C. Runnoe, Sarah J. Schmidt, Amy Lebleu, Chelsea L. MacLeod, Eugene A. Magnier, Jeremy L. Tinker, Daniel Hoover, Michael Eracleous, Jenny E. Greene, Keivan G. Stassun, Rachael Amaro, C. Z. Waters, Eric Morganson, K. C. Chambers, R. P. Kudritzki, José G. Fernández-Trincado, Matthew A. Bershady, Sean McGraw, Nigel Metcalfe, Carles Badenes, Adam D. Myers, Hee-Jong Seo, Axel Schwope, Scott F. Anderson, Vivek Mariappan, Yue Shen, Catherine J. Grier, Isabelle Pâris, Patrick B. Hall, Donald P. Schneider, Paul J. Green, Nick Kaiser
Publikováno v:
Astron.J.
Astron.J., 2017, 155 (1), pp.6. 〈10.3847/1538-3881/aa99da〉
Astron.J., 2017, 155 (1), pp.6. ⟨10.3847/1538-3881/aa99da⟩
Astronomical journal, 2017, Vol.155(1), pp.6 [Peer Reviewed Journal]
Astron.J., 2017, 155 (1), pp.6. 〈10.3847/1538-3881/aa99da〉
Astron.J., 2017, 155 (1), pp.6. ⟨10.3847/1538-3881/aa99da⟩
Astronomical journal, 2017, Vol.155(1), pp.6 [Peer Reviewed Journal]
As astronomers increasingly exploit the information available in the time domain, spectroscopic variability in particular opens broad new channels of investigation. Here we describe the selection algorithms for all targets intended for repeat spectro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c4ad2d894f45a0207b986a6437db65e9
http://arxiv.org/abs/1706.04240
http://arxiv.org/abs/1706.04240
Autor:
A. Pancoast, Aaron J. Barth, Tommaso Treu, B. M. Peterson, Catherine J. Grier, Brendon J. Brewer, Michael Fausnaugh
We present inferences on the geometry and kinematics of the broad-Hbeta line-emitting region in four active galactic nuclei monitored as a part of the fall 2010 reverberation mapping campaign at MDM Observatory led by the Ohio State University. From
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::19b36a3eb06cb69a5bf7fb3c8677dcee
http://arxiv.org/abs/1705.02346
http://arxiv.org/abs/1705.02346
Autor:
Bao Li Lun, Jonathan R. Trump, Chuanjun Wang, Jinyi Yang, Tinggui Wang, Yu Xin Xin, Xiaohui Fan, Richard F. Green, Linhua Jiang, Jujia Zhang, Fang Wang, Jianguo Wang, Xue-Bing Wu, Xiliang Zhang, Chenwei Yang, Wenwen Zuo, Liang Chang, Watson P. Varricatt, Peter Milne, Feige Wang, Catherine J. Grier, W. N. Brandt, Yu Feng Fan, Qian Yang, Jin-Ming Bai, T. H. Kerr, Weimin Yi, Hongyan Zhou, Sam Benigni
Very few low-ionization broad absorption line (LoBAL) QSOs have been found at high redshifts to date. One high-redshift LoBAL QSO, J0122+1216, was recently discovered at the Lijiang 2.4-m Telescope with an initial redshift determination of 4.76. Aimi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::32fb72791114245bdaa10b29d1424fcd
http://arxiv.org/abs/1703.02523
http://arxiv.org/abs/1703.02523