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Near-infrared spectroscopy of extreme BAL QSOs from the QUBRICS bright quasar survey
Guido Cupani, Giorgio Calderone, Pierluigi Selvelli +8
We report on the spectral confirmation of 18 QSO candidates from the "QUasars as BRIght beacons for Cosmology in the Southern hemisphere'' survey (QUBRICS), previously observed in…
The space density of ultra-luminous QSOs at the end of reionization epoch by the QUBRICS Survey and the AGN contribution to the hydrogen ionizing background
A. Grazian, E. Giallongo, K. Boutsia +6
Motivated by evidences favoring a rapid and late hydrogen reionization process completing at z~5.2-5.5 and mainly driven by rare and luminous sources, we have reassessed the estima…
The Probabilistic Random Forest applied to the selection of quasar candidates in the QUBRICS Survey
Francesco Guarneri, Giorgio Calderone, Stefano Cristiani +5
The number of known, bright (), high-redshift () QSOs in the Southern Hemisphere is considerably lower than the corresponding number in the Northern Hemisphere due to…
The episodic dust-making Wolf-Rayet star HD 38030 in the Large Magellanic Cloud
Peredur M. Williams, Nidia I. Morrell, Konstantina Boutsia +1
Mid-infrared photometry of the Wolf-Rayet star HD 38030 in the Large Magellanic Cloud from the NEOWISE-R mission show it to have undergone a dust-formation episode in 2018 and the…
The Luminosity Function of bright QSOs at z~4 and implications for the cosmic ionizing background
K. Boutsia, A. Grazian, F. Fontanot +8
Based on results by recent surveys, the number of bright quasars at redshifts z>3 is being constantly revised upwards. Current consensus is that at bright magnitudes ($M_{1450}\le…
The ASTRODEEP-GS43 catalogue: new photometry and redshifts for the CANDELS GOODS-South field
E. Merlin, M. Castellano, P. Santini +17
We present ASTRODEEP-GS43, a new multiwavelength photometric catalogue of the GOODS-South field, which builds and improves upon the previously released CANDELS catalogue. We provid…