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20 April 2024 |
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The Twice-Overlooked, Second FR II Broad Absorption Line Quasar LBQS 1138-0126 | | Michael S. Brotherton
; Scott M. Croom
; Carlos De Breuck
; Robert H. Becker
; & Michael D. Gregg
; | | Date: |
18 Jul 2002 | | Subject: | astro-ph | | Affiliation: | NOAO/KPNO, WY), Scott M. Croom (AAO), Carlos De Breuck (Institut d’Astrophysique de Paris), Robert H. Becker (IGPP/LLNL, UC Davis), & Michael D. Gregg (IGPP/LLNL, UC Davis | | Abstract: | We report the correct classification of an overlooked Fanaroff-Riley class II radio-loud quasar with broad absorption lines, only the second such object so identified. The rare properties of this quasar, LBQS 1138-0126, are twice overlooked. First LBQS 1138-0126 was found in the Large Bright Quasar Survey but only noted as a possible broad absorption line quasar without additional follow-up. Later LBQS 1138-0126 was rediscovered and classified as a radio-loud broad absorption line quasar but not recognized as an FR II radio source. We describe the radio, absorption line, and optical polarization properties of LBQS 1138-0126 and place it in context with respect to related quasars. In particular, spectropolarimetry shows that LBQS 1138-0126 has high continuum polarization increasing from 3% in the red (rest-frame 2400 Angstroms) to over 4% in the blue (rest-frame 1650 Ansgtroms), essentially confirming the intrinsic nature of the absorption. The polarization position angle rotates from about -30 degrees in the red to about 0 degrees in the blue; the radio lobe position angle is 52 degrees for comparison. LBQS 1138-0126 is additionally notable for being one of the most radio-loud broad absorption line quasars, and for having low-ionization broad absorption lines as well. | | Source: | arXiv, astro-ph/0207398 | | Services: | Forum | Review | PDF | Favorites | |
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