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

5 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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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",

note = "Publisher Copyright: {\textcopyright} 2022 The Author(s). Published by Cambridge University Press on behalf of the Astronomical Society of Australia.",

year = "2022",

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doi = "10.1017/pasa.2022.36",

language = "English",

volume = "39",

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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 - http://www.scopus.com/inward/record.url?scp=85139618286&partnerID=8YFLogxK

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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