Zobrazeno 1 - 10
of 1 074
pro vyhledávání: '"Donald P Schneider"'
Autor:
Logan B. Fries, Jonathan R. Trump, Keith Horne, Megan C. Davis, Catherine J. Grier, Yue Shen, Scott F. Anderson, Tom Dwelly, Y. Homayouni, Sean Morrison, Jessie C. Runnoe, Benny Trakhtenbrot, Roberto J. Assef, Dmitry Bizyaev, W. N. Brandt, Peter Breiding, Joel Brownstein, Priyanka Chakraborty, P. B. Hall, Anton M. Koekemoer, Héctor J. Ibarra-Medel, Mary Loli Martínez-Aldama, C. Alenka Negrete, Kaike Pan, Claudio Ricci, Donald P. Schneider, Hugh W. Sharp, Theodore B. Smith, Zachary Stone, Matthew J. Temple
Publikováno v:
The Astrophysical Journal, Vol 975, Iss 2, p 239 (2024)
We present a velocity-resolved reverberation mapping analysis of the hypervariable quasar RM160 (SDSS J141041.25+531849.0) at z = 0.359 with 153 spectroscopic epochs of data representing a 10 yr baseline (2013–2023). We split the baseline into two
Externí odkaz:
https://doaj.org/article/96d2038e0f2c47619728e400204cf4e8
Autor:
Lindsay R. House, Karl Gebhardt, Keely Finkelstein, Erin Mentuch Cooper, Dustin Davis, Daniel J. Farrow, Donald P. Schneider
Publikováno v:
The Astrophysical Journal, Vol 975, Iss 2, p 172 (2024)
We are merging a large participatory science effort with machine learning to enhance the Hobby–Eberly Telescope Dark Energy Experiment (HETDEX). Our overall goal is to remove false positives, allowing us to use lower signal-to-noise data and source
Externí odkaz:
https://doaj.org/article/ccc7c056ad264457a77cc1fc88e2500f
Autor:
Harum Ahmed, Ohad Shemmer, Brandon Matthews, Cooper Dix, Trung Ha, Gordon T. Richards, Michael S. Brotherton, Adam D. Myers, W. N. Brandt, Sarah C. Gallagher, Richard Green, Paulina Lira, Jacob N. McLane, Richard M. Plotkin, Donald P. Schneider
Publikováno v:
The Astrophysical Journal, Vol 968, Iss 2, p 77 (2024)
We present the rest-frame ultraviolet−optical spectral properties of 65 broad absorption line (BAL) quasars from the Gemini Near Infrared Spectrograph−Distant Quasar Survey (GNIRS-DQS). These properties are compared with those of 195 non-BAL quas
Externí odkaz:
https://doaj.org/article/698789954ff54b2c818a90fbde2d6efd
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:
Grisha Zeltyn, Benny Trakhtenbrot, Michael Eracleous, Qian Yang, Paul Green, Scott F. Anderson, Stephanie LaMassa, Jessie Runnoe, Roberto J. Assef, Franz E. Bauer, W. N. Brandt, Megan C. Davis, Sara E. Frederick, Logan B. Fries, Matthew J. Graham, Norman A. Grogin, Muryel Guolo, Lorena Hernández-García, Anton M. Koekemoer, Mirko Krumpe, Xin Liu, Mary Loli Martínez-Aldama, Claudio Ricci, Donald P. Schneider, Yue Shen, Marzena Śniegowska, Matthew J. Temple, Jonathan R. Trump, Yongquan Xue, Joel R. Brownstein, Tom Dwelly, Sean Morrison, Dmitry Bizyaev, Kaike Pan, Juna A. Kollmeier
Publikováno v:
The Astrophysical Journal, Vol 966, Iss 1, p 85 (2024)
“Changing-look” active galactic nuclei (CL-AGNs) challenge our basic ideas about the physics of accretion flows and circumnuclear gas around supermassive black holes. Using first-year Sloan Digital Sky Survey V (SDSS-V) repeated spectroscopy of n
Externí odkaz:
https://doaj.org/article/339acb449dd0467789da0c0548528c8a
Autor:
Gregory R. Zeimann, Maya H. Debski, Donald P. Schneider, William P. Bowman, Niv Drory, Gary J. Hill, Hanshin Lee, Phillip MacQueen, Matthew Shetrone
Publikováno v:
The Astrophysical Journal, Vol 966, Iss 1, p 14 (2024)
The Hobby–Eberly Telescope (HET) VIRUS Parallel Survey (HETVIPS) is a blind spectroscopic program that sparsely covers approximately two-thirds of the celestial sphere and consists of roughly 252 million fiber spectra. The spectra were taken in par
Externí odkaz:
https://doaj.org/article/197ef1cf29bb4d948d8417b50b62da83
Autor:
Laurel H. Weiss, Dustin Davis, Karl Gebhardt, Simon Gazagnes, Mahan Mirza Khanlari, Erin Mentuch Cooper, John Chisholm, Danielle Berg, William P. Bowman, Chris Byrohl, Robin Ciardullo, Maximilian Fabricius, Daniel Farrow, Caryl Gronwall, Gary J. Hill, Lindsay R. House, Donghui Jeong, Hasti Khoraminezhad, Wolfram Kollatschny, Eiichiro Komatsu, Maja Lujan Niemeyer, Shun Saito, Donald P. Schneider, Gregory R. Zeimann
Publikováno v:
The Astrophysical Journal, Vol 962, Iss 2, p 102 (2024)
The Hobby–Eberly Telescope Dark Energy Experiment (HETDEX) is designed to detect and measure the redshifts of more than 1 million Ly α emitting galaxies (LAEs) 1.88 < z < 3.52. In addition to its cosmological measurements, these data enable studie
Externí odkaz:
https://doaj.org/article/f77a20615e1d4414a60790d841bf920d
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:
Ntelis, Pierros, Hamilton, Jean-Christophe, Goff, Jean-Marc Le, Busca, Nicolas Guillermo, Aubourg, Eric, Laurent, Pierre, Rich, James, Burtin, Etienne, Bourboux, Hélion du Mas des, Delabrouille, Nathalie Palanque, Yeche, Christophe, Hogg, David W., Myers, Adam, Tinker, Jeremy, Bautista, Julian, Delubac, Timothée, Rossi, Graziano, Toheiro, Donald P. Schneider Rita, Vargas-Magaña, Mariana
In this study, we probe the transition to cosmic homogeneity in the Large Scale Structure (LSS) of the Universe using the CMASS galaxy sample of BOSS spectroscopic survey which covers the largest effective volume to date, $3\ h^{-3}\ \mathrm{Gpc}^3$
Externí odkaz:
http://arxiv.org/abs/1702.02159
Autor:
Caleb I. Cañas, Chad F. Bender, Suvrath Mahadevan, Dmitry Bizyaev, Nathan De Lee, Scott W. Fleming, Fred Hearty, Steven R. Majewski, Christian Nitschelm, Donald P. Schneider, Javier Serna, Keivan G. Stassun, Guđmundur Stefánsson, Guy S. Stringfellow, John C. Wilson
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 268, Iss 2, p 70 (2023)
Externí odkaz:
https://doaj.org/article/d469c79660cc435ab59801aecb6d03ea