منابع مشابه
Wavelength (å)
We present near-infrared (observed frame) spectra of the high-redshift quasar S4 0636+68 at z = 3.2 which was previously thought to be one of a group of “strong” Fe II emitters (i.e., F (Fe IIλλ4434–4684)/F (Hβ) > 1). Our K-band spectrum clearly shows emission lines of Hβ and [O III]λλ4959, 5007 as well as optical Fe II emission. Our computed value of F (Fe II λλ4434–4684)/F (Hβ) ≃ 0.8 for S4 0...
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ژورنال
عنوان ژورنال: Kritisk juss
سال: 2017
ISSN: 2387-4546,0804-7375
DOI: 10.18261/issn2387-4546-2011-02-02