Related papers: NGC 5548 in a Low-Luminosity State: Implications f…

Reverberation Mapping of the Broad-line Region in NGC 5548: Evidence for Radiation Pressure?

NGC 5548 is the best-observed reverberation-mapped active galactic nucleus with long-term, intensive monitoring. Here we report results from a new observational campaign between January and July, 2015. We measure the centroid time lag of…

Astrophysics of Galaxies · Physics 2016-08-24 Kai-Xing Lu , Pu Du , Chen Hu , Yan-Rong Li , Zhi-Xiang Zhang , Kai Wang , Ying-Ke Huang , Shao-Lan Bi , Jin-Ming Bai , Luis C. Ho , Jian-Min Wang

Supermassive Black Hole and Broad-line Region in NGC 5548: 2023 Reverberation Mapping Results

We present the results of the 2023 spectroscopic reverberation mapping (RM) campaign for active galactic nuclei (AGN) of NGC 5548, continuing our long-term monitoring program. Using the Lijiang 2.4-meter telescope, we obtained 74 spectra…

Astrophysics of Galaxies · Physics 2025-11-11 Wen-Zhe Xi , Kai-Xing Lu , Jin-Ming Bai , Zhang Yue , Weimin Yi , Liang Xu , Sha-Sha Li , Hai-Cheng Feng , Jian-Guo Wang

Supermassive Black Hole and Broad-line Region in NGC~5548: Results from Five-season Reverberation Mapping

NGC 5548 is one of the active galactic nuclei (AGN) selected for our long-term spectroscopic monitoring with the Lijiang 2.4~m telescope, aiming at investigating the origin and evolution of the broad-line regions (BLRs), accurately…

Astrophysics of Galaxies · Physics 2022-11-16 Kai-Xing Lu , Jin-Ming Bai , Jian-Min Wang , Chen Hu , Yan-Rong Li , Pu Du , Ming Xiao , Hai-Cheng Feng , Sha-Sha Li , Jian-Guo Wang , Zhi-Xiang Zhang , Ying-Ke Huang

Space Telescope and Optical Reverberation Mapping Project. V. Optical Spectroscopic Campaign and Emission-Line Analysis for NGC 5548

We present the results of an optical spectroscopic monitoring program targeting NGC 5548 as part of a larger multi-wavelength reverberation mapping campaign. The campaign spanned six months and achieved an almost daily cadence with…

Astrophysics of Galaxies · Physics 2017-03-22 L. Pei , M. M. Fausnaugh , A. J. Barth , B. M. Peterson , M. C. Bentz , G. De Rosa , K. D. Denney , M. R. Goad , C. S. Kochanek , K. T. Korista , G. A. Kriss , R. W. Pogge , V. N. Bennert , M. Brotherton , K. I. Clubb , E. Dalla Bontà , A. V. Filippenko , J. E. Greene , C. J. Grier , M. Vestergaard , W. Zheng , Scott M. Adams , Thomas G. Beatty , A. Bigley , Jacob E. Brown , Jonathan S. Brown , G. Canalizo , J. M. Comerford , Carl T. Coker , E. M. Corsini , S. Croft , K. V. Croxall , A. J. Deason , Michael Eracleous , O. D. Fox , E. L. Gates , C. B. Henderson , E. Holmbeck , T. W. -S. Holoien , J. J. Jensen , C. A. Johnson , P. L. Kelly , S. Kim , A. King , M. W. Lau , Miao Li , Cassandra Lochhaas , Zhiyuan Ma , E. R. Manne-Nicholas , J. C. Mauerhan , M. A. Malkan , R. McGurk , L. Morelli , Ana Mosquera , Dale Mudd , F. Muller Sanchez , M. L. Nguyen , P. Ochner , B. Ou-Yang , A. Pancoast , Matthew T. Penny , A. Pizzella , Radosław Poleski , Jessie Runnoe , B. Scott , Jaderson S. Schimoia , B. J. Shappee , I. Shivvers , Gregory V. Simonian , A. Siviero , Garrett Somers , Daniel J. Stevens , M. A. Strauss , Jamie Tayar , N. Tejos , T. Treu , J. Van Saders , L. Vican , S. Villanueva , H. Yuk , N. L. Zakamska , W. Zhu , M. D. Anderson , P. Arévalo , C. Bazhaw , S. Bisogni , G. A. Borman , M. C. Bottorff , W. N. Brandt , A. A. Breeveld , E. M. Cackett , M. T. Carini , D. M. Crenshaw , A. De Lorenzo-Cáceres , M. Dietrich , R. Edelson , N. V. Efimova , J. Ely , P. A. Evans , G. J. Ferland , K. Flatland , N. Gehrels , S. Geier , J. M. Gelbord , D. Grupe , A. Gupta , P. B. Hall , S. Hicks , D. Horenstein , Keith Horne , T. Hutchison , M. Im , M. D. Joner , J. Jones , J. Kaastra , S. Kaspi , B. C. Kelly , J. A. Kennea , M. Kim , S. C. Kim , S. A. Klimanov , J. C. Lee , D. C. Leonard , P. Lira , F. MacInnis , S. Mathur , I. M. McHardy , C. Montouri , R. Musso , S. V. Nazarov , H. Netzer , R. P. Norris , J. A. Nousek , D. N. Okhmat , I. Papadakis , J. R. Parks , J. -U. Pott , S. E. Rafter , H. -W. Rix , D. A. Saylor , K. Schnülle , S. G. Sergeev , M. Siegel , A. Skielboe , M. Spencer , D. Starkey , H. -I. Sung , K. G. Teems , C. S. Turner , P. Uttley , C. Villforth , Y. Weiss , J. -H. Woo , H. Yan , S. Young , Y. Zu

Space Telescope and Optical Reverberation Mapping Project. XII. Broad-Line Region Modeling of NGC 5548

We present geometric and dynamical modeling of the broad line region for the multi-wavelength reverberation mapping campaign focused on NGC 5548 in 2014. The dataset includes photometric and spectroscopic monitoring in the optical and…

Astrophysics of Galaxies · Physics 2020-10-21 P. R. Williams , A. Pancoast , T. Treu , B. J. Brewer , B. M. Peterson , A. J. Barth , M. A. Malkan , G. De Rosa , Keith Horne , G. A. Kriss , N. Arav , M. C. Bentz , E. M. Cackett , E. Dalla Bontà , M. Dehghanian , C. Done , G. J. Ferland , C. J. Grier , J. Kaastra , E. Kara , C. S. Kochanek , S. Mathur , M. Mehdipour , R. W. Pogge , D. Proga , M. Vestergaard , T. Waters , S. M. Adams , M. D. Anderson , P. Arévalo , T. G. Beatty , V. N. Bennert , A. Bigley , S. Bisogni , G. A. Borman , T. A. Boroson , M. C. Bottorff , W. N. Brandt , A. A. Breeveld , M. Brotherton , J. E. Brown , J. S. Brown , G. Canalizo , M. T. Carini , K. I. Clubb , J. M. Comerford , E. M. Corsini , D. M. Crenshaw , S. Croft , K. V. Croxall , A. J. Deason , A. De Lorenzo-Cáceres , K. D. Denney , M. Dietrich , R. Edelson , N. V. Efimova , J. Ely , P. A. Evans , M. M. Fausnaugh , A. V. Filippenko , K. Flatland , O. D. Fox , E. Gardner , E. L. Gates , N. Gehrels , S. Geier , J. M. Gelbord , L. Gonzalez , V. Gorjian , J. E. Greene , D. Grupe , A. Gupta , P. B. Hall , C. B. Henderson , S. Hicks , E. Holmbeck , T. W. -S. Holoien , T. Hutchison , M. Im , J. J. Jensen , C. A. Johnson , M. D. Joner , J. Jones , S. Kaspi , P. L. Kelly , J. A. Kennea , M. Kim , S. Kim , S. C. Kim , A. King , S. A. Klimanov , C. Knigge , Y. Krongold , M. W. Lau , J. C. Lee , D. C. Leonard , Miao Li , P. Lira , C. Lochhaas , Zhiyuan Ma , E. R. Manne-Nicholas , F. MacInnis , J. C. Mauerhan , R. McGurk , I. M. Mc Hardy , C. Montuori , L. Morelli , A. Mosquera , D. Mudd , F. Müller-Sánchez , S. V. Nazarov , R. P. Norris , J. A. Nousek , M. L. Nguyen , P. Ochner , D. N. Okhmat , I. Papadakis , J. R. Parks , L. Pei , M. T. Penny , A. Pizzella , R. Poleski , J. -U. Pott , S. E. Rafter , H. -W. Rix , J. Runnoe , D. A. Saylor , J. S. Schimoia , B. Scott , S. G. Sergeev , B. J. Shappee , I. Shivvers , M. Siegel , G. V. Simonian , A. Siviero , A. Skielboe , G. Somers , M. Spencer , D. Starkey , D. J. Stevens , H. -I. Sung , J. Tayar , N. Tejos , C. S. Turner , P. Uttley , J. Van Saders , S. A. Vaughan , L. Vican , S. Villanueva , C. Villforth , Y. Weiss , J. -H. Woo , H. Yan , S. Young , H. Yuk , W. Zheng , W. Zhu , Y. Zu

A Revised Broad-Line Region Radius and Black Hole Mass for the Narrow-Line Seyfert 1 NGC 4051

We present the first results from a high sampling rate, multi-month reverberation mapping campaign undertaken primarily at MDM Observatory with supporting observations from telescopes around the world. The primary goal of this campaign was…

Cosmology and Nongalactic Astrophysics · Physics 2009-09-28 K. D. Denney , L. C. Watson , B. M. Peterson , R. W. Pogge , D. W. Atlee , M. C. Bentz , J. C. Bird , D. J. Brokofsky , M. L. Comins , M. Dietrich , V. T. Doroshenko , J. D. Eastman , Y. S. Efimov , C. M. Gaskell , C. H. Hedrick , S. A. Klimanov , E. S. Klimek , A. K. Kruse , J. Lamb , K. Leighly , T. Minezaki , S. V. Nazarov , E. A. Petersen , P. Peterson , S. Poindexter , Y. Sakata , K. J. Schlesinger , S. G. Sergeev , J. J. Tobin , C. Unterborn , M. Vestergaard , A. E. Watkins , Y. Yoshii

A High-Quality velocity-delay map of the broad-line region in NGC 5548

NGC 5548 has been well spectroscopically monitored for reverberation mapping of the central kinematics by 19 campaigns. Using the maximum entropy method in this Letter, we build up a high-quality velocity-delay map of the H$\beta$ emission…

Astrophysics of Galaxies · Physics 2018-09-26 Ming Xiao , Pu Du , Kai-Xing Lu , Chen Hu , Yan-Rong Li , Zhi-Xiang Zhang , Kai Wang , Ying-Ke Huang , Jin Ming Bai , Weihao Bian , Luis C. Ho , Ye-Fei Yuan , Jian-Min Wang

The Lick AGN Monitoring Project: Reverberation Mapping of Optical Hydrogen and Helium Recombination Lines

We have recently completed a 64-night spectroscopic monitoring campaign at the Lick Observatory 3-m Shane telescope with the aim of measuring the masses of the black holes in 12 nearby (z < 0.05) Seyfert 1 galaxies with expected masses in…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 Misty C. Bentz , Jonelle L. Walsh , Aaron J. Barth , Yuzuru Yoshii , Jong-Hak Woo , Xiaofeng Wang , Tommaso Treu , Carol E. Thornton , Rachel A. Street , Thea N. Steele , Jeffrey M. Silverman , Frank J. D. Serduke , Yu Sakata , Takeo Minezaki , Matthew A. Malkan , Weidong Li , Nicholas Lee , Kyle D. Hiner , Marton G. Hidas , Jenny E. Greene , Elinor L. Gates , Mohan Ganeshalingam , Alexei V. Filippenko , Gabriela Canalizo , Vardha Nicola Bennert , Nairn Baliber

Space Telescope and Optical Reverberation Mapping Project. VIII. Time Variability of Emission and Absorption in NGC 5548 Based on Modeling the Ultraviolet Spectrum

We model the ultraviolet spectra of the Seyfert 1 galaxy NGC~5548 obtained with the Hubble Space Telescope during the 6-month reverberation-mapping campaign in 2014. Our model of the emission from NGC 5548 corrects for overlying absorption…

Astrophysics of Galaxies · Physics 2019-09-04 G. A. Kriss , G. De Rosa , J. Ely , B. M. Peterson , J. Kaastra , M. Mehdipour , G. J. Ferland , M. Dehghanian , S. Mathur , R. Edelson , K. T. Korista , N. Arav , A. J. Barth , M. C. Bentz , W. N. Brandt , D. M. Crenshaw , E. Dalla Bontà , K. D. Denney , C. Done , M. Eracleous , M. M. Fausnaugh , E. Gardner , M. R. Goad , C. J. Grier , Keith Horne , C. S. Kochanek , I. M. Mchardy , H. Netzer , A. Pancoast , L. Pei , R. W. Pogge , D. Proga , C. Silva , N. Tejos , M. Vestergaard , S. M. Adams , M. D. Anderson , P. Arévalo , T G. Beatty , E. Behar , V. N. Bennert , S. Bianchi , A. Bigley , S. Bisogni , R. Boissay-Malaquin , G. A. Borman , M. C. Bottorff , A. A. Breeveld , M. Brotherton , J. E. Brown , J. S. Brown , E. M. Cackett , G. Canalizo , M. Cappi , M. T. Carini , K. I. Clubb , J. M. Comerford , C. T. Coker , E. M. Corsini , E. Costantini , S. Croft , K. V. Croxall , A. J. Deason , A. De Lorenzo-Cáceres , B. De Marco , M. Dietrich , L. Di Gesu , J. Ebrero , P. A. Evans , A. V. Filippenko , K. Flatland , E. L. Gates , N. Gehrels , Z S. Geier , J. M. Gelbord , L. Gonzalez , V. Gorjian , D. Grupe , A. Gupta , P. B. Hall , C. B. Henderson , S. Hicks , E. Holmbeck , T. W. -S. Holoien , T. A. Hutchison , M. Im , J. J. Jensen , C. A. Johnson , M. D. Joner , S. Kaspi , B. C. Kelly , P. L. Kelly , J. A. Kennea , M. Kim , S. C. Kim , S. Y. Kim , A. King , S. A. Klimanov , Y. Krongold , M. W. Lau , J. C. Lee , D. C. Leonard , Miao Li , P. Lira , C. Lochhaas , Zhiyuan Ma , F. Macinnis , M. A. Malkan , E. R. Manne-Nicholas , G. Matt , J. C. Mauerhan , R. Mcgurk , C. Montuori , L. Morelli , A. Mosquera , D. Mudd , F. Müller-Sánchez , S. V. Nazarov , R. P. Norris , J. A. Nousek , M. L. Nguyen , P. Ochner , D. N. Okhmat , S. Paltani , J. R. Parks , C. Pinto , A. Pizzella , R. Poleski , G. Ponti , J. -U. Pott , S. E. Rafter , H. -W. Rix , J. Runnoe , D. A. Saylor , J. S. Schimoia , K. Schnülle , B. Scott , S. G. Sergeev , B. J. Shappee , I. Shivvers , M. Siegel , G. V. Simonian , A. Siviero , A. Skielboe , G. Somers , M. Spencer , D. Starkey , D. J. Stevens , H. -I. Sung , J. Tayar , K. G. Teems , T. Treu , C. S. Turner , P. Uttley , J . Van Saders , L. Vican , C. Villforth , S. Villanueva , D. J. Walton , T. Waters , Y. Weiss , J. -H. Woo , H. Yan , H. Yuk , W. Zheng , W. Zhu , Y. Zu

Space Telescope and Optical Reverberation Mapping Project. III. Optical Continuum Emission and Broad-Band Time Delays in NGC 5548

We present ground-based optical photometric monitoring data for NGC 5548, part of an extended multi-wavelength reverberation mapping campaign. The light curves have nearly daily cadence from 2014 January to July in nine filters (\emph{BVRI}…

Astrophysics of Galaxies · Physics 2016-04-27 M. M. Fausnaugh , K. D. Denney , A. J. Barth , M. C. Bentz , M. C. Bottorff , M. T. Carini , K. V. Croxall , G. De Rosa , M. R. Goad , Keith Horne , M. D. Joner , S. Kaspi , M. Kim , S. A. Klimanov , C. S. Kochanek , D. C. Leonard , H. Netzer , B. M. Peterson , K. Schnulle , S. G. Sergeev , M. Vestergaard , W. -K. Zheng , Y. Zu , M. D. Anderson , P. Arevalo , C. Bazhaw , G. A. Borman , T. A. Boroson , W. N. Brandt , A. A. Breeveld , B. J. Brewer , E. M. Cackett , D. M. Crenshaw , E. Dalla Bonta , A. De Lorenzo-Caceres , M. Dietrich , R. Edelson , N. V. Efimova , J. Ely , P. A. Evans , A. V. Filippenko , K. Flatland , N. Gehrels , S. Geier , J. M. Gelbord , L. Gonzalez , V. Gorjian , C. J. Grier , D. Grupe , P. B. Hall , S. Hicks , D. Horenstein , T. Hutchison , M. Im , J. J. Jensen , J. Jones , J. Kaastra , B. C. Kelly , J. A. Kennea , S. C. Kim , K. T. Korista , G. A. Kriss , J. C. Lee , P. Lira , F. MacInnis , E. R. Manne-Nicholas , S. Mathur , I. M. McHardy , C. Montouri , R. Musso , S. V. Nazarov , R. P. Norris , J. A. Nousek , D. N. Okhmat , A. Pancoast , I. Papadakis , J. R. Parks , L. Pei , R. W. Pogge , J. -U. Pott , S. E. Rafter , H. -W. Rix , D. A. Saylor , J. S. Schimoia , M. Siegel , M. Spencer , D. Starkey , H. -I. Sung , K. G. Teems , T. Treu , C. S. Turner , P. Uttley , C. Villforth , Y. Weiss , J. -H. Woo , H. Yan , S. Young

Photometric reverberation mapping of 3C120

We present the results of a five month monitoring campaign of the local active galactic nuclei (AGN) 3C120. Observations with a median sampling of two days were conducted with the robotic 15cm telescope VYSOS-6 located near Cerro Armazones…

Cosmology and Nongalactic Astrophysics · Physics 2013-03-15 F. Pozo Nuñez , M. Ramolla , C. Westhues , C. Bruckmann , M. Haas , R. Chini , K. Steenbrugge , M. Murphy

A Reverberation-Based Mass for the Central Black Hole in NGC 4151

We have undertaken a new ground-based monitoring campaign to improve the estimates of the mass of the central black hole in NGC 4151. We measure the lag time of the broad H beta line response compared to the optical continuum at 5100 A and…

Astrophysics · Physics 2008-11-26 Misty C. Bentz , Kelly D. Denney , Edward M. Cackett , Matthias Dietrich , Jeffrey K. J. Fogel , Himel Ghosh , Keith Horne , Charles Kuehn , Takeo Minezaki , Christopher A. Onken , Bradley M. Peterson , Richard W. Pogge , Vladimir I. Pronik , Douglas O. Richstone , Sergey G. Sergeev , Marianne Vestergaard , Matthew G. Walker , Yuzuru Yoshii

Reverberation Mapping Data of NGC 5548 Imply a Multicomponent Broad-Line Region

Line broadening and variability are observational hallmarks of active galactic nuclei which allow us to measure supermassive black hole masses as well as constrain the geometry and kinematics of the emitting gas, with the most precise…

Astrophysics of Galaxies · Physics 2025-07-14 Kirk Long , Jason Dexter

Steps Toward Determination of the Size and Structure of the Broad-Line Region in Active Galactic Nuclei. XVI. A Thirteen-Year Study of Spectral Variability in NGC 5548

We present the final installment of an intensive 13-year study of variations of the optical continuum and broad H-beta emission line in the Seyfert 1 galaxy NGC 5548. The data base consists of 1530 optical continuum measurements and 1248…

Astrophysics · Physics 2009-11-07 B. M. Peterson , the International AGN Watch

Reverberation Mapping of Changing-look Active Galactic Nucleus NGC 3516

The changes of broad emission lines should be a crucial issue to understanding the physical properties of changing-look active galactic nucleus (CL-AGN). Here, we present the results of an intensive and homogeneous 6-month long…

Astrophysics of Galaxies · Physics 2021-03-10 Hai-Cheng. Feng , Chen. Hu , Sha-Sha. Li , H. T. Liu , J. M. Bai , Li-Feng. Xing , Wei-Yang. Wang , Zi-Xu. Yang , Ming. Xiao , Kai-Xing. Lu

The Lick AGN Monitoring Project: Broad-Line Region Radii and Black Hole Masses from Reverberation Mapping of Hbeta

We have recently completed a 64-night spectroscopic monitoring campaign at the Lick Observatory 3-m Shane telescope with the aim of measuring the masses of the black holes in 12 nearby (z < 0.05) Seyfert 1 galaxies with expected masses in…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 Misty C. Bentz , Jonelle L. Walsh , Aaron J. Barth , Nairn Baliber , Nicola Bennert , Gabriela Canalizo , Alexei V. Filippenko , Mohan Ganeshalingam , Elinor L. Gates , Jenny E. Greene , Marton G. Hidas , Kyle D. Hiner , Nicholas Lee , Weidong Li , Matthew A. Malkan , Takeo Minezaki , Yu Sakata , Frank J. D. Serduke , Jeffrey M. Silverman , Thea N. Steele , Daniel Stern , Rachel A. Street , Carol E. Thornton , Tommaso Treu , Xiaofeng Wang , Jong-Hak Woo , Yuzuru Yoshii

Reverberation Mapping Measurements of Black Hole Masses and Broad-Line Region Kinematics in Mrk 817 and NGC 7469

We present the results from a spectroscopic monitoring campaign to obtain reverberation-mapping measurements and investigate the broad-line region kinematics for active galactic nuclei (AGN) of Mrk~817 and NGC~7469. This campaign was…

Astrophysics of Galaxies · Physics 2021-09-29 Kai-Xing Lu , Jian-Guo Wang , Zhi-Xiang Zhang , Ying-Ke Huang , Liang Xu , Yu-Xin Xin , Xiao-Guang Yu , Xu Ding , De-Qing Wang , Hai-Cheng Feng

Robotic Reverberation Mapping of the Southern Seyfert NGC 3783

We present spectroscopic and photometric monitoring of NGC 3783 conducted throughout the first half of 2020. Time delays between the continuum variations and the response of the broad optical emission lines were clearly detected, and we…

Astrophysics of Galaxies · Physics 2021-01-13 Misty C. Bentz , Rachel Street , Christopher A. Onken , Monica Valluri

The Seoul National University AGN Monitoring Project III: H$\beta$ lag measurements of 32 luminous AGNs and the high-luminosity end of the size--luminosity relation

We present the main results from a long-term reverberation mapping campaign carried out for the Seoul National University Active Galactic Nuclei (AGN) Monitoring Project. High-quality data were obtained during 2015-2021 for 32 luminous AGNs…

Astrophysics of Galaxies · Physics 2023-11-28 Jong-Hak Woo , Shu Wang , Suvendu Rakshit , Hojin Cho , Donghoon Son , Vardha N. Bennert , Elena Gallo , Edmund Hodges-Kluck , Tommaso Treu , Aaron J. Barth , Wanjin Cho , Adi Foord , Jaehyuk Geum , Hengxiao Guo , Yashashree Jadhav , Yiseul Jeon , Kyle M. Kabasares , Won-Suk Kang , Changseok Kim , Minjin Kim , Tae-Woo Kim , Huynh Anh N. Le , Matthew A. Malkan , Amit Kumar Mandal , Daeseong Park , Chance Spencer , Jaejin Shin , Hyun-il Sung , Vivian U , Peter R. Williams , Nick Yee

Space Telescope and Optical Reverberation Mapping Project. IX. Velocity-Delay Maps for Broad Emission Lines in NGC 5548

We report velocity-delay maps for prominent broad emission lines, Ly_alpha, CIV, HeII and H_beta, in the spectrum of NGC5548. The emission-line responses inhabit the interior of a virial envelope. The velocity-delay maps reveal stratified…

Astrophysics of Galaxies · Physics 2021-02-10 Keith Horne , G. De Rosa , B. M. Peterson , A. J. Barth , J. Ely , M. M. Fausnaugh , G. A. Kriss , L. Pei , S. M. Adams , M. D. Anderson , P. Arevalo , T G. Beatty , V. N. Bennert , M. C. Bentz , A. Bigley , S. Bisogni , G. A. Borman , T. A. Boroson , M. C. Bottorff , W. N. Brandt , A. A. Breeveld , M. Brotherton , J. E. Brown , J. S. Brown , E. M. Cackett , G. Canalizo , M. T. Carini , K. I. Clubb , J. M. Comerford , E. M. Corsini , D. M. Crenshaw , S. Croft , K. V. Croxall , E. Dalla Bonta , A. J. Deason , M. Dehghanian , A. De Lorenzo-Caceres , K. D. Denney , M. Dietrich , C. Done , R. Edelson , N. V. Efimova , M. Eracleous , P. A. Evans , G. J. Ferland , A. V. Filippenko , K. Flatland , O. D. Fox , E. Gardner , E. L. Gates , N. Gehrels , S. Geier , J. M. Gelbord , M. R. Goad , L. Gonzalez , V. Gorjian , J. E. Greene , C. J. Grier , D. Grupe , A. Gupta , P. B. Hall , C. B. Henderson , S. Hicks , E. Holmbeck , T. W. -S. Holoien , T. Hutchison , M. Im , J. J. Jensen , C. A. Johnson , M. D. Joner , J. Jones , J. Kaastra , S. Kaspi , P. L. Kelly , J. A. Kennea , M. Kim , S. Kim , S. C. Kim , A. King , S. A. Klimanov , C. S. Kochanek , K. T. Korista , Y. Krongold , M. W. Lau , J. C. Lee , D. C. Leonard , Miao Li , P. Lira , C. Lochhaas , Zhiyuan Ma , F. MacInnis , M. A. Malkan , E. R. Manne-Nicholas , S. Mathur , J. C. Mauerhan , R. McGurk , I. M. Mc Hardy , C. Montuori , L. Morelli , A. Mosquera , D. Mudd , F. Mueller-Sanchez , S. V. Nazarov , H. Netzer , R. P. Norris , J. A. Nousek , M. L. Nguyen , P. Ochner , D. N. Okhmat , A. Pancoast , I. Papadakis , J. R. Parks , M. T. Penny , A. Pizzella , R. W. Pogge , R. Poleski , J. -U. Pott , D. Proga , S. E. Rafter , H. -W. Rix , J. Runnoe , D. A. Saylor , J. S. Schimoia , K. Schnuelle , B. Scott , S. G. Sergeev , B. J. Shappee , I. Shivvers , M. Siegel , G. V. Simonian , A. Siviero , A. Skielboe , G. Somers , M. Spencer , D. Starkey , D. J. Stevens , M. A. Strauss , H. -I. Sung , J. Tayar , K. G. Teems , N. Tejos , T. Treu , C. S. Turner , P. Uttley , J . Van Saders , M. Vestergaard , L. Vican , S. Villanueva , C. Villforth , Y. Weiss , J. -H. Woo , H. Yan , S. Young , H. Yuk , N. L. Zakamska , W. Zheng , W. Zhu , Y. Zu