Accretion/Jet Activity and Narrow [O III] Kinematics in Young Radio Galaxies

Details Accretion/Jet Activity and Narrow [O III] Kinematics in Young Radio Galaxies Accretion/Jet Activity and Narrow [O III] Kinematics in Young Radio Galaxies

2009-07-13

arxiv.org/abs/0907.2229v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

5 pages, 4 figures, accepted by Science in China Series-G (BH issue), only PDF, which is relate to recent two papers arXiv:090

Scientific paper

We estimate black hole masses and Eddington ratios for a sample of 81 young radio galaxies (42 CSS +39 GPS). We find that the average black hole (BH) mass of these young radio galaxies is ~8.3, which is less than that of radio loud QSOs and low redshift radio galaxies. The CSS/GPS sources have relatively high Eddington ratios, with an average value of =-0.75, which are similar to those of narrow line Seyfert 1 galaxies (NLS1s). This suggests that young radio galaxies may not only be in the early stages of their radio activity, but also in the early stage of their accretion activity. We find that the young radio galaxies as a class deviate systematically from M_bh-\sigma relation defined by nearby inactive galaxies, when using [O III] as a surrogate for stellar velocity dispersion, \sigma_* . We also find that the deviation of the [O III] line width is correlated with the Eddington ratio and sources with Lbol/LEdd~1 have the largest deviations, which are similar to those of radio quiet QSOs/NLS1s (radio jets is absent or weak). A similar result has been obtained for 9 linear radio Seyfert galaxies. On the basis of these results, we suggest that, in addition to the possible jet-gas interactions, accretion activities may also play an important role in shaping the kinematics of the narrow [O III] line in young radio galaxies and linear radio Seyferts.

Affiliated with

Also associated with

No associations

Rating

Accretion/Jet Activity and Narrow [O III] Kinematics in Young Radio Galaxies 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 Accretion/Jet Activity and Narrow [O III] Kinematics in Young Radio Galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Accretion/Jet Activity and Narrow [O III] Kinematics in Young Radio Galaxies will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-331073