Zobrazeno 1 - 10
of 57
pro vyhledávání: '"Derek Wills"'
Autor:
Cindy L. Ehlers, Derek Wills, Katherine J. Karriker-Jaffe, Evelyn Phillips, Corrine Kim, David A. Gilder
Publikováno v:
Clinical EEG and neuroscience.
Event-related oscillations (EROs) may represent sensitive biomarkers or endophenotypes for disorders that underlie risk behaviors such as suicidal thoughts and actions. In this study, young adults of American Indian (AI) (n = 821) and Mexican America
Autor:
Cindy L. Ehlers, Marc A. Schuckit, Victor Hesselbrock, David A. Gilder, Derek Wills, Kathleen Bucholz
Publikováno v:
J Psychiatr Res
AimsTo describe the clinical course and symptom profile of DSM-IV Antisocial Personality Disorder (ASPD) and the syndrome of Adult Antisocial Behavior Syndrome (AABS) and determine if they differ based on sex and race.MethodsUsing questions from a va
Publikováno v:
Psychopharmacology. 237:3507-3507
Publikováno v:
The Astronomical Journal. 134:294-313
We have obtained quasi-simultaneous ultraviolet-optical spectra for 22 out of 23 quasars in the complete PG-X-ray sample with redshift, z
Autor:
Ari Laor, Juntao Yuan, Derek Wills, Zhaohui Shang, Bingrong Xie, Beverley J. Wills, Edward L. Robinson
Publikováno v:
The Astrophysical Journal. 586:52-71
A unique set of UV-optical spectrograms of 22 low redshift QSOs are investigated using principal component analysis. We find three significant principal components over the broad wavelength range from Ly\alpha to H\alpha. They together account for ab
Autor:
Michael S. Brotherton, Beverley J. Wills, Belinda Jane Wilkes, Gary J. Ferland, Ari Laor, Zhaohui Shang, Derek Wills
Publikováno v:
The Astrophysical Journal. 515:L53-L56
Two sets of relationships relate QSO UV to soft X-ray continua with the broad-line region. These are (i) the Baldwin relationships, which are inverse relationships between the broad-line equivalent width and the continuum luminosity, and (ii) Boroson
Publikováno v:
The Astrophysical Journal. 489:L137-L140
We report the detection of ionized absorption in the ASCA spectrum of the narrow-line Seyfert 1 galaxy IRAS 17020+4544. Subsequent optical spectropolarimetry revealed high polarization increasing from 3% in the red to 5% in the blue, indicating elect
Autor:
Yanxia Xie, Daniel A. Dale, Zhaohui Shang, Dean C. Hines, Baitian Tang, Sarah Gallagher, Jun Li, Rodrigo Nemmen, Jessie C. Runnoe, Gerard A. Kriss, Rajib Ganguly, Richard F. Green, Michael S. Brotherton, Derek Wills, Beverley J. Wills, Benjamin J. Kelly, Sabrina Cales
Publikováno v:
The Astrophysical Journal Supplement Series. 196:2
We have produced the next generation of quasar spectral energy distributions (SEDs), essentially updating the work of Elvis et al. (1994) by using high-quality data obtained with several space and ground-based telescopes, including NASA's Great Obser
Publikováno v:
The Astrophysical Journal Supplement Series. 194:19
We present 990 previously unpublished optical linear polarization measurements of quasars, active galactic nuclei, and some stars observed for interstellar polarization. The observations, covering the period 1981-2000, were made with McDonald Observa
Autor:
B. McCollum, S. D. Godlin, Thomas J. Balonek, B. J. Wills, Derek Wills, Michael S. Brotherton, James R. Webb, Chris Shrader
Publikováno v:
AIP Conference Proceedings.
Our ongoing program of photometric monitoring of blazar active galactic nuclei has revealed a significant outburst in the enigmatic high‐energy source 3C 279. The event occurred during late May to early June of 1992, with a peak amplitude of 2.3 ma