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arXiv · 2610.34069

AllBRICQS: the All-sky BRIght, Complete Quasar Survey - Quasar Selection and Final Southern $G_{\rm RP}<16$ Sample

Christian Wolf·Christopher A. Onken·Wei Jeat Hon·Samuel Lai·Patrick Tisserand·Rachel Webster
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Abstract

We describe the final quasar sample from the Southern part of the All-sky BRIght, Complete Quasar Survey (AllBRICQS), which aimed to discover the remaining optically bright quasars using data from Gaia and WISE. We discuss our final selection and present a further 119 quasars in the redshift range $z=[0.03;4.35]$. This brings the sample of spectroscopically confirmed quasars with $G_{\rm RP}<16$ and $z>0.1$ at Dec$<+20^{\circ}$ and Galactic latitude $|b|>10^{\circ}$ to 745 objects. The spectra from the ANU 2.3m telescope at Siding Spring Observatory cover a wavelength range from 360 to 950 nm with $R\sim3000$. For redshifts of $z>0.12$, we expect the sample to be complete at $G_{\rm RP}<16$, a regime that is usually avoided by large spectroscopic surveys due to detector saturation. We note that at least one strongly lensed quasar has escaped our selection.

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Christian Wolf, Christopher A. Onken, Wei Jeat Hon, Samuel Lai, Patrick Tisserand, Rachel Webster. 2026-10-25. AllBRICQS: the All-sky BRIght, Complete Quasar Survey - Quasar Selection and Final Southern $G_{\rm RP}<16$ Sample. https://arxiv.org/abs/2610.34069

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