An Extremely Bright QSO at $z=2.89$

Abstract

We report the discovery and confirmation of a bright quasi-stellar object (QSO), 2MASS J13260399+7023462, at $z=2.889$. This QSO is the first spectroscopically confirmed candidate from an ongoing search using the combination of Gaia and WISE photometry to identify bright QSOs at $z>2$, the redshift regime for which the Lyman-$\alpha$ forest is accessible with ground-based facilities. With a Gaia apparent magnitude $G=16.07$, 2MASS J13260399+7023462 is one of the brightest QSOs known at $z>2$, with only 15 currently known brighter QSOs. Given its inferred $M_{1450,AB}$ magnitude and redshift, it is among the most luminous objects in the Universe; the inferred black hole mass and corresponding Eddington ratio are ($2.7\pm 0.4$) $\times$ 10${}^{10}$ M${}_{\odot }$ and $1.3\pm 0.3$, respectively. Follow-up Hubble observations confirm it is not gravitationally lensed.

8 pages, 8 figures, 1 table, Accepted for publication in ApJ

References in corpus (10)

• Cosmic Star Formation History
• eROSITA Science Book: Mapping the Structure of the Energetic Universe
• The X-ray Properties of the Most-Luminous Quasars from the Sloan Digital Sky Survey
• Cosmic dynamics in the era of Extremely Large Telescopes
• A new library of theoretical stellar spectra with scaled-solar and alpha-enhanced mixtures
• Correcting CIV-Based Virial Black Hole Masses
• The X-Ray to Mid-Infrared Relation of AGN at High Luminosity
• Strong lensing optical depths in a LCDM universe II: the influence of the stellar mass in galaxies
• The Extremely Luminous Quasar Survey in the Sloan Digital Sky Survey footprint. III. The South Galactic Cap Sample and the Quasar Luminosity Function at Cosmic Noon
• The Extremely Luminous Quasar Survey in the Pan-STARRS 1 Footprint (PS-ELQS)

Cited by in corpus (2)

• Forecasting cosmic acceleration measurements using the Lyman-$\alpha$ forest
• A Closer Look at Two of the Most Luminous Quasars in the Universe