The Polarized Spectrum of the Fe [CSC]ii[/CSC]–Rich Broad Absorption Line QSO IRAS 07598+6508
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چکیده
منابع مشابه
X-Rays from the Highly Polarized Broad Absorption Line QSO CSO 755.
We present results from a BeppoSAX observation of the broad absorption line (BAL) QSO CSO 755, which was observed as part of our program to investigate the X-ray properties of highly polarized BAL QSOs. CSO 755 is clearly detected by the BeppoSAX Medium-Energy Concentrator Spectrometers, making it the highest redshift (z=2.88) and most optically luminous (MV=-27.4) BAL QSO seen in X-rays. It is...
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We have analyzed the broad absorption line system of the bright (V ∼ 16.5) high-redshift (z = 2.361) QSO SBS1542+541 using UV spectra from the HST FOS along with optical data from the MMT and the Steward Observatory 2.3m telescope. These spectra offer continuous wavelength coverage from 1200 to 8000 Å, corresponding to ∼ 340− 2480 Å in the QSO rest frame. The line of sight to the object contain...
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We have discovered two low-ionization broad absorption line quasars in programs to obtain optical spectra for radio-selected quasar candidates from the VLA FIRST Survey (Becker, White, & Helfand 1995). Both belong to the extremely rare class of BAL QSOs that exhibit narrow absorption lines from
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The broad absorption lines (BALs) of QSOs indicate abundances of heavy elements, relative to hydrogen, that are 1 to 2 orders of magnitude higher than the solar values. In at least one QSO, an especially large enhancement of phosphorus is observed. These abundances resemble those in Galactic novae, and this suggests that novae may produce the BAL gas. The needed rate of nova outbursts may come ...
متن کاملMolecular QSO Absorption Line Systems
We review observations of molecular absorption line systems at high redshift toward red quasars and gravitational lenses. The steeply falling power law column density distribution function of QSO absorption line systems implies that for every 1000 Ly α forest lines from absorbers with hydrogen column density, NH < 10 15 cm there will be only one system with NH ≥ 10 cm (Hu et al. 1995). Although...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 1995
ISSN: 0004-637X
DOI: 10.1086/309611