Discovery of the most luminous quasar of the last 9 Gyr

Christopher A. Onken; Samuel Lai; Christian Wolf; Adrian B. Lucy; Wei Jeat Hon; Patrick Tisserand; Jennifer L. Sokoloski; Gerardo J.M. Luna; Rajeev Manick; Xiaohui Fan; Fuyan Bian

doi:10.1017/pasa.2022.36

Discovery of the most luminous quasar of the last 9 Gyr

Christopher A. Onken^*
, Samuel Lai
, Christian Wolf
, Adrian B. Lucy
, Wei Jeat Hon
, Patrick Tisserand
, Jennifer L. Sokoloski
, Gerardo J.M. Luna
, Rajeev Manick
, Xiaohui Fan
, Fuyan Bian

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

We report the discovery of a bright (mag (AB), mag (Vega)) quasar at redshift-the optically brightest (unbeamed) quasar at 0.4$[]>. SMSS J114447.77-430859.3, at a Galactic latitude of, was identified by its optical colours from the SkyMapper Southern Survey (SMSS) during a search for symbiotic binary stars. Optical and near-infrared spectroscopy reveals broad Mg ii, H, H, and Pa emission lines, from which we measure a black hole mass of. With its high luminosity, or mag (AB), we estimate an Eddington ratio of. As the most luminous quasar known over the last 9 Gyr of cosmic history, having a luminosity greater than 3C 273, the source offers a range of potential follow-up opportunities.

Original language	English
Article number	e037
Journal	Publications of the Astronomical Society of Australia
Volume	39
DOIs	https://doi.org/10.1017/pasa.2022.36
Publication status	Published - 12 Sept 2022

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10.1017/pasa.2022.36

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title = "Discovery of the most luminous quasar of the last 9 Gyr",

abstract = "We report the discovery of a bright (mag (AB), mag (Vega)) quasar at redshift-the optically brightest (unbeamed) quasar at 0.4\$[]>. SMSS J114447.77-430859.3, at a Galactic latitude of, was identified by its optical colours from the SkyMapper Southern Survey (SMSS) during a search for symbiotic binary stars. Optical and near-infrared spectroscopy reveals broad Mg ii, H, H, and Pa emission lines, from which we measure a black hole mass of. With its high luminosity, or mag (AB), we estimate an Eddington ratio of. As the most luminous quasar known over the last 9 Gyr of cosmic history, having a luminosity greater than 3C 273, the source offers a range of potential follow-up opportunities.",

keywords = "active galactic nuclei: Quasars, supermassive black holes",

author = "Onken, \{Christopher A.\} and Samuel Lai and Christian Wolf and Lucy, \{Adrian B.\} and Hon, \{Wei Jeat\} and Patrick Tisserand and Sokoloski, \{Jennifer L.\} and Luna, \{Gerardo J.M.\} and Rajeev Manick and Xiaohui Fan and Fuyan Bian",

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month = sep,

day = "12",

doi = "10.1017/pasa.2022.36",

language = "English",

volume = "39",

journal = "Publications of the Astronomical Society of Australia",

issn = "1323-3580",

publisher = "Cambridge University Press",

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TY - JOUR

T1 - Discovery of the most luminous quasar of the last 9 Gyr

AU - Onken, Christopher A.

AU - Lai, Samuel

AU - Wolf, Christian

AU - Lucy, Adrian B.

AU - Hon, Wei Jeat

AU - Tisserand, Patrick

AU - Sokoloski, Jennifer L.

AU - Luna, Gerardo J.M.

AU - Manick, Rajeev

AU - Fan, Xiaohui

AU - Bian, Fuyan

PY - 2022/9/12

Y1 - 2022/9/12

N2 - We report the discovery of a bright (mag (AB), mag (Vega)) quasar at redshift-the optically brightest (unbeamed) quasar at 0.4$[]>. SMSS J114447.77-430859.3, at a Galactic latitude of, was identified by its optical colours from the SkyMapper Southern Survey (SMSS) during a search for symbiotic binary stars. Optical and near-infrared spectroscopy reveals broad Mg ii, H, H, and Pa emission lines, from which we measure a black hole mass of. With its high luminosity, or mag (AB), we estimate an Eddington ratio of. As the most luminous quasar known over the last 9 Gyr of cosmic history, having a luminosity greater than 3C 273, the source offers a range of potential follow-up opportunities.

AB - We report the discovery of a bright (mag (AB), mag (Vega)) quasar at redshift-the optically brightest (unbeamed) quasar at 0.4$[]>. SMSS J114447.77-430859.3, at a Galactic latitude of, was identified by its optical colours from the SkyMapper Southern Survey (SMSS) during a search for symbiotic binary stars. Optical and near-infrared spectroscopy reveals broad Mg ii, H, H, and Pa emission lines, from which we measure a black hole mass of. With its high luminosity, or mag (AB), we estimate an Eddington ratio of. As the most luminous quasar known over the last 9 Gyr of cosmic history, having a luminosity greater than 3C 273, the source offers a range of potential follow-up opportunities.

KW - active galactic nuclei: Quasars

KW - supermassive black holes

UR - https://www.scopus.com/pages/publications/85139618286

U2 - 10.1017/pasa.2022.36

DO - 10.1017/pasa.2022.36

M3 - Article

SN - 1323-3580

VL - 39

JO - Publications of the Astronomical Society of Australia

JF - Publications of the Astronomical Society of Australia

M1 - e037

ER -

Discovery of the most luminous quasar of the last 9 Gyr

Abstract

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