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| DOI | 10.1088/0004-637X/791/2/88 | ||||
| Año | 2014 | ||||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
We consider how the profile and multi-year variability properties of a large sample of C IV Broad Absorption Line (BAL) troughs change when BALs from Si IV and/or Al III are present at corresponding velocities, indicating that the line of sight intercepts at least some lower ionization gas. We derive a number of observational results for C IV BALs separated according to the presence or absence of accompanying lower ionization transitions, including measurements of composite profile shapes, equivalent width (EW), characteristic velocities, composite variation profiles, and EW variability. We also measure the correlations between EW and fractional-EW variability for C IV, Si IV, and Al III. Our measurements reveal the basic correlated changes between ionization level, kinematics, and column density expected in accretion-disk wind models; e. g., lines of sight including lower ionization material generally show deeper and broader C IV troughs that have smaller minimum velocities and that are less variable. Many C IV BALs with no accompanying Si IV or Al III BALs may have only mild or no saturation.
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | Ak, Nurten Filiz | Mujer |
PENN STATE UNIV - Estados Unidos
Erciyes Univ - Turquía Pennsylvania State University - Estados Unidos Erciyes Üniversitesi - Turquía |
| 2 | Brandt, William Nielsen | Hombre |
PENN STATE UNIV - Estados Unidos
Pennsylvania State University - Estados Unidos |
| 3 | Hall, Patrick | Hombre |
York Univ - Canadá
York University - Canadá |
| 4 | Schneider, D. P. | Hombre |
PENN STATE UNIV - Estados Unidos
Pennsylvania State University - Estados Unidos |
| 5 | Trump, Jonathan R. | Hombre |
PENN STATE UNIV - Estados Unidos
Pennsylvania State University - Estados Unidos |
| 6 | Anderson, Scott F. | Hombre |
UNIV WASHINGTON - Estados Unidos
University of Washington, Seattle - Estados Unidos University of Washington - Estados Unidos |
| 7 | Hamann, F. | Hombre |
UNIV FLORIDA - Estados Unidos
University of Florida - Estados Unidos |
| 8 | Myers, Adam D. | - |
UNIV WYOMING - Estados Unidos
|
| 9 | Paris, I. | - |
Universidad de Chile - Chile
|
| 10 | Petitjean, P. | - |
UNIV PARIS 06 - Francia
|
| 11 | Ross, Nicholas P. | Hombre |
UNIV CALIF BERKELEY - Estados Unidos
Drexel Univ - Estados Unidos Lawrence Berkeley National Laboratory - Estados Unidos Drexel University - Estados Unidos |
| 12 | Shen, Yue | - |
Observatorio Las Campanas - Estados Unidos
|
| 13 | York, Don | - |
UNIV CHICAGO - Estados Unidos
The University of Chicago - Estados Unidos The Enrico Fermi Institute - Estados Unidos |
| Fuente |
|---|
| National Science Foundation |
| Natural Sciences and Engineering Research Council of Canada |
| Alfred P. Sloan Foundation |
| U.S. Department of Energy Office of Science |
| NSERC |