David W. Atlee
Ohio State University
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Publication
Featured researches published by David W. Atlee.
The Astrophysical Journal | 2010
K. D. Denney; Bradley M. Peterson; Richard W. Pogge; A. Adair; David W. Atlee; K. Au-Yong; Misty C. Bentz; Jonathan C. Bird; D. J. Brokofsky; E. Chisholm; M. L. Comins; Matthias Dietrich; V. T. Doroshenko; Jason D. Eastman; Yu. S. Efimov; S. Ewald; S. Ferbey; C. M. Gaskell; C. H. Hedrick; K. Jackson; S.A. Klimanov; Elizabeth S. Klimek; A. K. Kruse; A. Ladéroute; J. B. Lamb; Karen M. Leighly; Takeo Minezaki; S. V. Nazarov; Christopher A. Onken; Eric A. Petersen
We present the final results from a high sampling rate, multi-month, spectrophotometric reverberation mapping campaign undertaken to obtain either new or improved Hβ reverberation lag measurements for several relatively low-luminosity active galactic nuclei (AGNs). We have reliably measured the time delay between variations in the continuum and Hβ emission line in six local Seyfert 1 galaxies. These measurements are used to calculate the mass of the supermassive black hole at the center of each of these AGNs. We place our results in context to the most current calibration of the broad-line region (BLR) RBLR–L relationship, where our results remove outliers and reduce the scatter at the low-luminosity end of this relationship. We also present velocity-resolved Hβ time-delay measurements for our complete sample, though the clearest velocity-resolved kinematic signatures have already been published.
Monthly Notices of the Royal Astronomical Society | 2014
Carles Sánchez; M. Carrasco Kind; H. Lin; R. Miquel; F. B. Abdalla; Adam Amara; Mandakranta Banerji; C. Bonnett; Robert J. Brunner; D. Capozzi; A. Carnero; Francisco J. Castander; L. N. da Costa; C. E. Cunha; A. Fausti; D. W. Gerdes; N. Greisel; J. Gschwend; W. Hartley; S. Jouvel; Ofer Lahav; M. Lima; M. A. G. Maia; Pol Martí; R. Ogando; F. Ostrovski; P. S. Pellegrini; M. M. Rau; I. Sadeh; S. Seitz
We present results from a study of the photometric redshift performance of the Dark Energy Survey (DES), using the early data from a Science Verification (SV) period of observations in late 2012 and early 2013 that provided science-quality images for almost 200 sq.~deg.~at the nominal depth of the survey. We assess the photometric redshift performance using about 15000 galaxies with spectroscopic redshifts available from other surveys. These galaxies are used, in different configurations, as a calibration sample, and photo-
The Astrophysical Journal | 2009
K. D. Denney; Lorna Watson; Bradley M. Peterson; Richard W. Pogge; David W. Atlee; Misty C. Bentz; Jonathan C. Bird; D. J. Brokofsky; M. L. Comins; Matthias Dietrich; V. T. Doroshenko; Jason D. Eastman; Yu. S. Efimov; C. M. Gaskell; C. H. Hedrick; S. A. Klimanov; Elizabeth S. Klimek; A. K. Kruse; J. B. Lamb; Karen M. Leighly; Takeo Minezaki; S. V. Nazarov; Eric A. Petersen; P. Peterson; Shawn Poindexter; Y. Schlesinger; K. J. Sakata; S. G. Sergeev; John J. Tobin; Cayman T. Unterborn
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The Astrophysical Journal | 2009
K. D. Denney; Bradley M. Peterson; Richard W. Pogge; A. Adair; David W. Atlee; K. Au-Yong; Misty C. Bentz; Jonathan C. Bird; D. J. Brokofsky; E. Chisholm; M. L. Comins; Matthias Dietrich; V. T. Doroshenko; Jason D. Eastman; Yu. S. Efimov; S. Ewald; S. Ferbey; C. M. Gaskell; C. H. Hedrick; K. Jackson; S. A. Klimanov; Elizabeth S. Klimek; A. K. Kruse; A. Ladéroute; J. B. Lamb; Karen M. Leighly; Takeo Minezaki; S. V. Nazarov; Christopher A. Onken; Eric A. Petersen
s are obtained and studied using most of the existing photo-
The Astrophysical Journal | 2010
C. B. D'Andrea; Masao Sako; Benjamin E. P. Dilday; Joshua A. Frieman; Jon A. Holtzman; Richard Kessler; Kohki Konishi; Donald P. Schneider; Jesper Sollerman; J. Craig Wheeler; Naoki Yasuda; D. Cinabro; Saurabh W. Jha; Robert C. Nichol; Hubert Lampeitl; Mathew Smith; David W. Atlee; Bruce A. Bassett; Francisco J. Castander; Ariel Goobar; R. Miquel; J. Nordin; Linda Ostman; Jose Luis Palacio Prieto; Robert Michael Quimby; Adam G. Riess; Maximillian Stritzinger
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Monthly Notices of the Royal Astronomical Society | 2014
Stacey Alberts; Alexandra Pope; M. Brodwin; David W. Atlee; Yen-Ting Lin; Arjun Dey; Peter R. M. Eisenhardt; D. Gettings; Anthony H. Gonzalez; Buell T. Jannuzi; Conor L. Mancone; John Moustakas; Gregory F. Snyder; S. Adam Stanford; Daniel Stern; Benjamin J. Weiner; Gregory R. Zeimann
codes. A weighting method in a multi-dimensional color-magnitude space is applied to the spectroscopic sample in order to evaluate the photo-
The Astrophysical Journal | 2008
C. J. Grier; Bradley M. Peterson; Misty C. Bentz; K. D. Denney; Jason D. Eastman; Matthias Dietrich; Richard W. Pogge; Jose Luis Palacio Prieto; D. L. DePoy; Roberto J. Assef; David W. Atlee; Jonathan C. Bird; Michael E. Eyler; Molly S. Peeples; Robert Siverd; Lorna Watson; J. C. Yee
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The Astrophysical Journal | 2012
Kyoung Soo Lee; Stacey Alberts; David W. Atlee; Arjun Dey; Alexandra Pope; Buell T. Jannuzi; Naveen A. Reddy; Michael J. I. Brown
performance with sets that mimic the full DES photometric sample, which is on average significantly deeper than the calibration sample due to the limited depth of spectroscopic surveys. Empirical photo-
The Astrophysical Journal | 2009
David W. Atlee; Roberto J. Assef; Christopher S. Kochanek
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The Astrophysical Journal | 2011
David W. Atlee; Paul Martini; Roberto J. Assef; Daniel D. Kelson; John S. Mulchaey
methods using, for instance, Artificial Neural Networks or Random Forests, yield the best performance in the tests, achieving core photo-