Hβ line profile variation and the structure of the Akn 120 emitting region

Details Hβ line profile variation and the structure of the Akn 120 emitting region Hβ line profile variation and the structure of the Akn 120 emitting region

Oct 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003pobeo..75...59s&link_type=abstract

Publications of the Astronomical Observatory of Belgrade (ISSN 0373-3742), No. 75, p. 59 - 62 (2003). In: Proceedings of the XII

Physics

Physics Of Stars, Stellar Systems, Active Galactic Nuclei, H Beta

Scientific paper

To investigate the structure of the Akn 120 emitting region we have analysed 97 spectral line profiles of Hβ line using a Gaussian-decomposition approach. The decomposed shape of the Akn 120 lines indicates three separated broad line emitting regions in all periods considered, where in two of them the systematic motions of emitting gas are present. It seems that one of the two regions has a high random velocity of emitters (<2500km/s) and approaching line-of-sight velocities and the other has a smaller random velocity of emitters (<1000km/s) and receding line-of-sight velocities. The Hβ line in all groups and in averaged spectrum was fitted with three broad and one narrow Gaussians through the entire period considered (1977-1990). The central broad as well as blue component of Hβ and a shelf (Fe II template) cause the Hβ line shape variation. The temporal changes of the shifts, widths and areas of the three broad components (blue, central and the red one) are also shown. Gaussian decomposition of Hβ, Lyα, [CIII 1909] and [MgII 2798] lines. RMS analysis in all groups and in averaged spectrum shows the highest scattering of the profiles is within Hβ core. This is taken as real change in the Hβ line in Akn 120 originates in the two regions (double cones) and the wings arise from the disk and a central, highly turbulent region which may be disk-like.

Affiliated with

Also associated with

No associations

Rating

Hβ line profile variation and the structure of the Akn 120 emitting region does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Hβ line profile variation and the structure of the Akn 120 emitting region, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hβ line profile variation and the structure of the Akn 120 emitting region will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1035042