Zobrazeno 1 - 10
of 295
pro vyhledávání: '"Patrick A. Hall"'
Autor:
Ming-Yang Zhuang, Qian Yang, Yue Shen, Monika Adamów, Douglas N. Friedel, R. A. Gruendl, Zachary Stone, Junyao Li, Xin Liu, Paul Martini, Timothy M. C. Abbott, Scott F. Anderson, Roberto J. Assef, Franz E. Bauer, Richard Bielby, W. N. Brandt, Colin J. Burke, Jorge Casares, Yu-Ching Chen, Gisella De Rosa, Alex Drlica-Wagner, Tom Dwelly, Alice Eltvedt, Gloria Fonseca Alvarez, Jianyang Fu, Cesar Fuentes, Melissa L. Graham, Catherine J. Grier, Nathan Golovich, Patrick B. Hall, Patrick Hartigan, Keith Horne, Anton M. Koekemoer, Mirko Krumpe, Jennifer I. Li, Chris Lidman, Umang Malik, Amelia Mangian, Andrea Merloni, Claudio Ricci, Mara Salvato, Rob Sharp, David E. Trilling, Brad E. Tucker, Di Wen, Zachary Wideman, Yongquan Xue, Zhefu Yu, Catherine Zucker
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 274, Iss 2, p 42 (2024)
High-quality Extragalactic Legacy-field Monitoring (HELM) is a long-term observing program that photometrically monitors several well-studied extragalactic legacy fields with the Dark Energy Camera (DECam) imager on the CTIO 4 m Blanco telescope. Sin
Externí odkaz:
https://doaj.org/article/c5e1a29f28094a219621b9aff794a659
Autor:
Fatima Zaidouni, Erin Kara, Peter Kosec, Missagh Mehdipour, Daniele Rogantini, Gerard A. Kriss, Ehud Behar, Jelle Kaastra, Aaron J. Barth, Edward M. Cackett, Gisella De Rosa, Yasaman Homayouni, Keith Horne, Hermine Landt, Nahum Arav, Misty C. Bentz, Michael S. Brotherton, Elena Dalla Bontà, Maryam Dehghanian, Gary J. Ferland, Carina Fian, Jonathan Gelbord, Michael R. Goad, Diego H. González Buitrago, Catherine J. Grier, Patrick B. Hall, Chen Hu, Dragana Ilić, Shai Kaspi, Christopher S. Kochanek, Andjelka B. Kovačević, Daniel Kynoch, Collin Lewin, John Montano, Hagai Netzer, Jack M. M. Neustadt, Christos Panagiotou, Ethan R. Partington, Rachel Plesha, Luka Č. Popović, Daniel Proga, Thaisa Storchi-Bergmann, David Sanmartim, Matthew R. Siebert, Matilde Signorini, Marianne Vestergaard, Tim Waters, Ying Zu
Publikováno v:
The Astrophysical Journal, Vol 974, Iss 1, p 91 (2024)
We present the results of the XMM-Newton and NuSTAR observations taken as part of the ongoing, intensive multiwavelength monitoring program of the Seyfert 1 galaxy Mrk 817 by the AGN Space Telescope and Optical Reverberation Mapping 2 (AGN STORM 2) P
Externí odkaz:
https://doaj.org/article/72a0395dcbd8439787caa0ce7414fef7
Autor:
Robert Wheatley, Catherine J. Grier, Patrick B. Hall, W. N. Brandt, Jonah Lotz, D. P. Schneider, Jonathan R. Trump, Yue Shen, Lucas M. Seaton, Scott F. Anderson, Matthew J. Temple, Roberto Assef, Logan B. Fries, Y. Homayouni, Darshan Kakkad, Anton M. Koekemoer, Mary Loli Martínez-Aldama, C. Alenka Negrete, Claudio Ricci, Dmitry Bizyaev, Joel R. Brownstein, Sean Morrison, Kaike Pan
Publikováno v:
The Astrophysical Journal, Vol 968, Iss 2, p 49 (2024)
We present the results of an investigation of a highly variable C iv broad absorption line (BAL) feature in spectra of the quasar SBS 1408+544 ( z = 2.337) that shows a significant shift in velocity over time. This source was observed as a part of th
Externí odkaz:
https://doaj.org/article/995ddc85a3374435b04ec1772dce1fdf
Autor:
Yue Shen, Catherine J. Grier, Keith Horne, Zachary Stone, Jennifer I. Li, Qian Yang, Yasaman Homayouni, Jonathan R. Trump, Scott F. Anderson, W. N. Brandt, Patrick B. Hall, Luis C. Ho, Linhua Jiang, Patrick Petitjean, Donald P. Schneider, Charling Tao, Fergus. R. Donnan, Yusra AlSayyad, Matthew A. Bershady, Michael R. Blanton, Dmitry Bizyaev, Kevin Bundy, Yuguang Chen, Megan C. Davis, Kyle Dawson, Xiaohui Fan, Jenny E. Greene, Hannes Gröller, Yucheng Guo, Héctor Ibarra-Medel, Yuanzhe Jiang, Ryan P. Keenan, Juna A. Kollmeier, Cassandra Lejoly, Zefeng Li, Axel de la Macorra, Maxwell Moe, Jundan Nie, Graziano Rossi, Paul S. Smith, Wei Leong Tee, Anne-Marie Weijmans, Jiachuan Xu, Minghao Yue, Xu Zhou, Zhimin Zhou, Hu Zou
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 272, Iss 2, p 26 (2024)
We present the final data from the Sloan Digital Sky Survey (SDSS) Reverberation Mapping (RM) project, a precursor to the SDSS-V Black Hole Mapper RM program. This data set includes 11 yr photometric and 7 yr spectroscopic light curves for 849 broad-
Externí odkaz:
https://doaj.org/article/6d791eb279de4413b8eae4a884dd70d2
Autor:
Y. Homayouni, Gerard A. Kriss, Gisella De Rosa, Rachel Plesha, Edward M. Cackett, Michael R. Goad, Kirk T. Korista, Keith Horne, Travis Fischer, Tim Waters, Aaron J. Barth, Erin A. Kara, Hermine Landt, Nahum Arav, Benjamin D. Boizelle, Misty C. Bentz, Michael S. Brotherton, Doron Chelouche, Elena Dalla Bontà, Maryam Dehghanian, Pu Du, Gary J. Ferland, Carina Fian, Jonathan Gelbord, Catherine J. Grier, Patrick B. Hall, Chen Hu, Dragana Ilić, Michael D. Joner, Jelle Kaastra, Shai Kaspi, Andjelka B. Kovačević, Daniel Kynoch, Yan-Rong Li, Missagh Mehdipour, Jake A. Miller, Jake Mitchell, John Montano, Hagai Netzer, J. M. M. Neustadt, Ethan Partington, Luka Č. Popović, Daniel Proga, Thaisa Storchi-Bergmann, David Sanmartim, Matthew R. Siebert, Tommaso Treu, Marianne Vestergaard, Jian-Min Wang, Martin J. Ward, Fatima Zaidouni, Ying Zu
Publikováno v:
The Astrophysical Journal, Vol 963, Iss 2, p 123 (2024)
An intensive reverberation mapping campaign of the Seyfert 1 galaxy Mrk 817 using the Cosmic Origins Spectrograph on the Hubble Space Telescope revealed significant variations in the response of broad UV emission lines to fluctuations in the continuu
Externí odkaz:
https://doaj.org/article/316614fb5a9e43ee843eceed4152da03
Autor:
Hugh W. Sharp, Y. Homayouni, Jonathan R. Trump, Scott F. Anderson, Roberto J. Assef, W. N. Brandt, Megan C. Davis, Logan B. Fries, Catherine J. Grier, Patrick B. Hall, Keith Horne, Anton M. Koekemoer, Mary Loli Martínez-Aldama, David M. Menezes, Theodore Pena, C. Ricci, Donald P. Schneider, Yue Shen, Benny Trakhtenbrot
Publikováno v:
The Astrophysical Journal, Vol 961, Iss 1, p 93 (2024)
This work studies the relationship between accretion-disk size and quasar properties, using a sample of 95 quasars from the Sloan Digital Sky Survey Reverberation Mapping Project with measured lags between the g and i photometric bands. Our sample in
Externí odkaz:
https://doaj.org/article/5516619df054447ba18ede63d1d24af5
Autor:
Patrick Lamson-Hall, Richard Martin
Publikováno v:
Buildings & Cities, Vol 3, Iss 1 (2022)
Rapid urban expansion in Sub-Saharan Africa is a challenging policy problem with few demonstrated solutions. An approach for managing rapid urbanization resulted in considerable changes in planning strategies in cities in Ethiopia. An initiative from
Externí odkaz:
https://doaj.org/article/4fef55f5e5134cd29ad50ed6814fa600
Autor:
Edward M. Cackett, Jonathan Gelbord, Aaron J. Barth, Gisella De Rosa, Rick Edelson, Michael R. Goad, Yasaman Homayouni, Keith Horne, Erin A. Kara, Gerard A. Kriss, Kirk T. Korista, Hermine Landt, Rachel Plesha, Nahum Arav, Misty C. Bentz, Benjamin D. Boizelle, Elena Dalla Bontà, Maryam Dehghanian, Fergus Donnan, Pu Du, Gary J. Ferland, Carina Fian, Alexei V. Filippenko, Diego H. González Buitrago, Catherine J. Grier, Patrick B. Hall, Chen Hu, Dragana Ilić, Jelle Kaastra, Shai Kaspi, Christopher S. Kochanek, Andjelka B. Kovačević, Daniel Kynoch, Yan-Rong Li, Jacob N. McLane, Missagh Mehdipour, Jake A. Miller, John Montano, Hagai Netzer, Christos Panagiotou, Ethan Partington, Luka Č. Popović, Daniel Proga, Daniele Rogantini, David Sanmartim, Matthew R. Siebert, Thaisa Storchi-Bergmann, Marianne Vestergaard, Jian-Min Wang, Tim Waters, Fatima Zaidouni
Publikováno v:
The Astrophysical Journal, Vol 958, Iss 2, p 195 (2023)
The AGN STORM 2 campaign is a large, multiwavelength reverberation mapping project designed to trace out the structure of Mrk 817 from the inner accretion disk to the broad emission line region and out to the dusty torus. As part of this campaign, Sw
Externí odkaz:
https://doaj.org/article/8664929415484c7d97b0125ed2c3089f
Autor:
Jennifer I-Hsiu Li, Yue Shen, Luis C. Ho, W. N. Brandt, Catherine J. Grier, Patrick B. Hall, Y. Homayouni, Anton M. Koekemoer, Donald P. Schneider, Jonathan R. Trump
Publikováno v:
The Astrophysical Journal, Vol 954, Iss 2, p 173 (2023)
We measure the correlation between black hole mass M _BH and host stellar mass M _* for a sample of 38 broad-line quasars at 0.2 ≲ z ≲ 0.8 (median redshift z _med = 0.5). The black hole masses are derived from a dedicated reverberation mapping pr
Externí odkaz:
https://doaj.org/article/4cbebf5deeaf46159187c18ecc43e1ff
Autor:
Y. Homayouni, Gisella De Rosa, Rachel Plesha, Gerard A. Kriss, Aaron J. Barth, Edward M. Cackett, Keith Horne, Erin A. Kara, Hermine Landt, Nahum Arav, Benjamin D. Boizelle, Misty C. Bentz, Thomas G. Brink, Michael S. Brotherton, Doron Chelouche, Elena Dalla Bontà, Maryam Dehghanian, Pu Du, Gary J. Ferland, Laura Ferrarese, Carina Fian, Alexei V. Filippenko, Travis Fischer, Ryan J. Foley, Jonathan Gelbord, Michael R. Goad, Diego H. González Buitrago, Varoujan Gorjian, Catherine J. Grier, Patrick B. Hall, Juan V. Hernández Santisteban, Chen Hu, Dragana Ilić, Michael D. Joner, Jelle Kaastra, Shai Kaspi, Christopher S. Kochanek, Kirk T. Korista, Andjelka B. Kovačević, Daniel Kynoch, Yan-Rong Li, Ian M. McHardy, Jacob N. McLane, Missagh Mehdipour, Jake A. Miller, Jake Mitchell, John Montano, Hagai Netzer, Christos Panagiotou, Ethan Partington, Richard W. Pogge, Luka Č. Popović, Daniel Proga, Daniele Rogantini, Thaisa Storchi-Bergmann, David Sanmartim, Matthew R. Siebert, Tommaso Treu, Marianne Vestergaard, Jian-Min Wang, Martin J. Ward, Tim Waters, Peter R. Williams, Fatima Zaidouni, Ying Zu
Publikováno v:
The Astrophysical Journal, Vol 948, Iss 2, p 85 (2023)
We present reverberation mapping measurements for the prominent ultraviolet broad emission lines of the active galactic nucleus Mrk 817 using 165 spectra obtained with the Cosmic Origins Spectrograph on the Hubble Space Telescope. Our ultraviolet obs
Externí odkaz:
https://doaj.org/article/8cc843479a1343fd9904787d8f7af75a