Newly found z∼5 quasars primarily based on deep studying and Bayesian data criterion
Authors: Suhyun Shin, Myungshin Im, Yongjung Kim, Linhua Jiang
Summary: We report the invention of 4 quasars with M1450≳−25.0 magazine at z∼5 and supermassive black gap mass measurement for one of many quasars. They have been chosen as promising high-redshift quasar candidates through deep studying and Bayesian data criterion, that are anticipated to be efficient in discriminating quasars from the late-type stars and high-redshift galaxies. The candidates have been noticed by the Double Spectrograph on the Palomar 200-inch Hale Telescope. They present clear Lyα breaks at about 7000–8000 Å, indicating they’re quasars at 4.7<z<5.6. For HSC J233107–001014, we measure the mass of its supermassive black gap (SMBH) utilizing its CRomannum{4}λ1549 emission line. The SMBH mass and Eddington ratio of the quasar are discovered to be ∼108M⊙ and ∼0.6, respectively. This means that this quasar probably harbors a quick rising SMBH close to the Eddington restrict regardless of its faintness (LBol<1046 erg s−1). Our 100 % quasar identification charge helps excessive effectivity of our deep studying and Bayesian data criterion choice methodology, which could be utilized to future surveys to extend high-redshift quasar sampl
