With the recent release of large (i.e., e100 million objects), well-calibrated photometric surveys, such as Digitized Palomar Observatory Sky Survey (DPOSS), Two Micron All Sky Survey, and Sloan Digital Sky Survey, spectroscopic identification of important targets is no longer a simple issue. In order to enhance the returns from a spectroscopic survey, candidate sources are often preferentially selected to be of interest, such as brown dwarfs or high-redshift quasars. This approach, while useful for targeted projects, risks missing new or unusual species. We have, as a result, taken the alternative path of spectroscopically identifying inter-esting sources with the sole criterion being that they are in low-density areas of the gr and ri col...
The SDSS-III BOSS Quasar survey will attempt to observe z > 2.15 quasars at a density of at least 15...
Context. Large spectroscopic surveys have discovered very peculiar and hitherto unknown types of act...
We present the results of a new spectroscopic survey for dusty intervening absorption systems, parti...
With the recent release of large (i.e., ≳100 million objects), well-calibrated photometric surveys, ...
International audienceBroad absorption line (BAL) quasars are characterized by gas clouds that absor...
Quasars with extremely red infrared-to-optical colours are an interesting population that can test i...
We present results on a survey to find extremely dust-reddened Type 1 quasars. Combining the FIRST r...
International audienceWe present the results of a new spectroscopic survey for dusty intervening abs...
Case Low-Dispersion Northern Sky Survey. Thirteen of them are quasars, ranging in redshift from 0.07...
We present an X-ray spectral analysis of 21 low redshift quasars observed with XMM-Newton EPIC. A...
Quasars are amongst the most luminous objects known in the Universe and thus can be observed out to ...
International audienceWe report on the discovery of a peculiar broad absorption line (BAL) quasar id...
We have carried out the first systematic survey of the sub-millimeter properties of broad absorption...
We conduct a spectroscopic search of quasars observed by the Sloan Digital Sky Survey (SDSS) with br...
The SDSS-III BOSS Quasar survey will attempt to observe z > 2.15 quasars at a density of at least 15...
The SDSS-III BOSS Quasar survey will attempt to observe z > 2.15 quasars at a density of at least 15...
Context. Large spectroscopic surveys have discovered very peculiar and hitherto unknown types of act...
We present the results of a new spectroscopic survey for dusty intervening absorption systems, parti...
With the recent release of large (i.e., ≳100 million objects), well-calibrated photometric surveys, ...
International audienceBroad absorption line (BAL) quasars are characterized by gas clouds that absor...
Quasars with extremely red infrared-to-optical colours are an interesting population that can test i...
We present results on a survey to find extremely dust-reddened Type 1 quasars. Combining the FIRST r...
International audienceWe present the results of a new spectroscopic survey for dusty intervening abs...
Case Low-Dispersion Northern Sky Survey. Thirteen of them are quasars, ranging in redshift from 0.07...
We present an X-ray spectral analysis of 21 low redshift quasars observed with XMM-Newton EPIC. A...
Quasars are amongst the most luminous objects known in the Universe and thus can be observed out to ...
International audienceWe report on the discovery of a peculiar broad absorption line (BAL) quasar id...
We have carried out the first systematic survey of the sub-millimeter properties of broad absorption...
We conduct a spectroscopic search of quasars observed by the Sloan Digital Sky Survey (SDSS) with br...
The SDSS-III BOSS Quasar survey will attempt to observe z > 2.15 quasars at a density of at least 15...
The SDSS-III BOSS Quasar survey will attempt to observe z > 2.15 quasars at a density of at least 15...
Context. Large spectroscopic surveys have discovered very peculiar and hitherto unknown types of act...
We present the results of a new spectroscopic survey for dusty intervening absorption systems, parti...