BAL and non-BAL quasars: continuum, emission, and absorption properties establish a common parent sample
نویسندگان
چکیده
منابع مشابه
VLT Observations of Two Unusual BAL Quasars
Among the unusual broad absorption line quasars being found by the Sloan Digital Sky Survey (SDSS) are objects with much stronger absorption in Fe iii than Fe ii. These unusual line ratios require a high density in the outflow (nH ≥ 3×10 10 cm). They should also appear for only a limited range of outflow column densities, which explains their rarity. Previously we suggested that the Fe iii line...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2020
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/staa130