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- W4289517194 abstract "We demonstrate that VPMS J170850.95+433223.7 is a weak line quasar (WLQ) which is remarkable in several respects. It was already classified as a probable quasar two decades ago, but with considerable uncertainty. The non-significant proper motion and parallax from the Gaia early data release 3 have solidified this assumption. Based on previously unpublished spectra, we show that VPMS J170850.95+433223.7 is a WLQ at z = 2.345 with immeasurably faint broad emission lines in the rest-frame ultraviolet. A preliminary estimate suggests that it hosts a supermassive black hole of ~10^9 M_sun accreting close to the Eddington limit, perhaps at the super-Eddington level. We identify two absorber systems with blueward velocity offsets of 0.05c and 0.1c, which could represent high-velocity outflows, which are perhaps related to the high accretion state of the quasar." @default.
- W4289517194 created "2022-08-03" @default.
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- W4289517194 date "2022-08-01" @default.
- W4289517194 modified "2023-10-17" @default.
- W4289517194 title "<i>Gaia</i>-supported re-discovery of a remarkable weak line quasar from a variability and proper motion survey" @default.
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- W4289517194 doi "https://doi.org/10.1051/0004-6361/202244368" @default.
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