The quasar 2141 + 174 - Not a case of self-absorption in the Balmer lines

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Absorption Spectra, Balmer Series, Line Shape, Quasars, Self Absorption, Astronomical Spectroscopy, Red Shift, Spectral Line Width

Scientific paper

It is shown that the apparent Balmer line profile self-absorption of the
2141 + 174 quasar is not real. The unusual character of the Balmer line
profiles is instead due to a difference between the mean broad-line and
mean narrow-line redshifts corresponding to a velocity difference of 730
+ or - 160 km/sec.

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