We report the discovery in the Sloan Digital Sky Survey (SDSS) and the SDSS-III Baryon Oscillation Spectroscopic Survey of 17 broad absorption line (BAL)...
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PublicaciónBroad absorption line quasars with redshifted troughs: high-velocity infall or rotationally dominated outflows?
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PublicaciónBVRI Photometry of QSO 0957+561A, B: Observations, New Reduction Method, and Time Delay
CCD observations of the gravitational lens system Q0957+561A, B in the BVRI bands are presented in this paper. The observations, taken with the 82 cm IAC-80...
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PublicaciónCapturing dual AGN activity and kiloparsec-scale outflows in IRAS 20210+1121
The most standard scenario for the evolution of massive galaxies across cosmic time assumes a correspondence based on the interplay between active galactic...
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PublicaciónCatalog of Long-term Transient Sources in the First 10 yr of Fermi-LAT Data
We present the first Fermi Large Area Telescope (LAT) catalog of long-term γ-ray transient sources (1FLT). This comprises sources that were detected on monthly...
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PublicaciónCCD monitoring of quasars and BL Lacertae objects
Johnson B CCD photometry of quasars and other active nuclei were obtained with the 1-m and 2.5-m reflectors of the Roque de los Muchachos Observatory in the...
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PublicaciónCCD monitoring of the X-ray variable quasar OX 169
Three nights of broadband filter monitoring of the OX 169 variable X-ray quasar using a GEC-type CCD have yielded a 0.005 mag rms precision in the R band. Rapid...
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PublicaciónChandra Observations of the X-Ray Jet of 3C 273
We report results from Chandra observations of the X-ray jet of 3C 273 during the calibration phase in 2000 January. The zeroth-order images and spectra from...
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PublicaciónCircumgalactic medium of quasars: C IV absorption systems
We investigate the properties of circumgalactic gas in the halo of quasar (QSO) host galaxies from C IV absorption-line systems. We use the optical spectroscopy...
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PublicaciónClear evidence for the early triggering of a luminous quasar-like active galactic nuclei in a major, gas-rich merger
We present deep, intermediate resolution, long-slit Gemini GMOS-S optical spectra of the Sloan Digital Sky Survey (SDSS) type II quasar J002531-104022, which is...