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Featured researches published by David W. Atlee.


The Astrophysical Journal | 2010

REVERBERATION MAPPING MEASUREMENTS OF BLACK HOLE MASSES IN SIX LOCAL SEYFERT GALAXIES

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

Photometric redshift analysis in the Dark Energy Survey science verification data

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

A REVISED BROAD-LINE REGION RADIUS AND BLACK HOLE MASS FOR THE NARROW-LINE SEYFERT 1 NGC 4051

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

z


The Astrophysical Journal | 2009

DIVERSE KINEMATIC SIGNATURES FROM REVERBERATION MAPPING OF THE BROAD-LINE REGION IN AGNs

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

Type II-P supernovae from the SDSS-II supernova survey and the standardized candle method

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

z


Monthly Notices of the Royal Astronomical Society | 2014

The evolution of dust-obscured star formation activity in galaxy clusters relative to the field over the last 9 billion years

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

The Mass of the Black Hole in the Quasar PG 2130+099

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

z


The Astrophysical Journal | 2012

HERSCHEL DETECTION OF DUST EMISSION FROM UV-LUMINOUS STAR-FORMING GALAXIES AT 3.3 ≲ z ≲ 4.3

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

EVOLUTION OF THE UV EXCESS IN EARLY-TYPE GALAXIES

David W. Atlee; Roberto J. Assef; Christopher S. Kochanek

z


The Astrophysical Journal | 2011

A MULTI-WAVELENGTH STUDY OF LOW-REDSHIFT CLUSTERS OF GALAXIES. I. COMPARISON OF X-RAY AND MID-INFRARED SELECTED ACTIVE GALACTIC NUCLEI

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-

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Misty C. Bentz

University of California

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D. Cinabro

Wayne State University

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