Open AccessPolarized broad He I and Paschen lines in NGC 1068
Author(s) -
Alexander D. M.,
Young S.,
Hough J. H.
Publication year - 1999
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.1999.02417.x
Subject(s) - physics , polarization (electrochemistry) , broad band , redshift , astrophysics , outflow , scattering , spectral line , circular polarization , astronomy , optics , galaxy , chemistry , meteorology , microstrip
We present J‐band spectropolarimetry of NGC 1068. We observe polarized broad Pa β and, for the first time, polarized broad Pa γ and He I . Assuming electron scattering as the polarization mechanism, the polarized broad lines suffer little or no extinction. All the polarized broad lines are redshifted with respect to the narrow lines, attributed to an outflow velocity for the scatterers of 900 ± 200 km s‐1.