Kinematics of the Broad Line Region in M81
arXiv:0708.0396 · doi:10.1086/522292
Abstract
A new model is presented which explains the origin of the broad emission lines observed in the LINER/Seyfert nucleus of M81 in terms of a steady state spherically symmetric inflow, amounting to 1 x 10^-5 Msun/yr, which is sufficient to explain the luminosity of the AGN. The emitting volume has an outer radius of ~1 pc, making it the largest broad line region yet to be measured, and it contains a total mass of ~ 5 x 10^-2 Msun of dense, ~ 10^8 cm^-3, ionized gas, leading to a very low filling factor of ~ 5 x 10^-9. The fact that the BLR in M81 is so large may explain why the AGN is unable to sustain the ionization seen there. Thus, the AGN in M81 is not simply a scaled down quasar.
Accepted for Publication in ApJ 7/21/07
Cited by in corpus (5)
- Exploring the Nuclear Environment of the NLS1 Galaxy Arakelian 564 with XMM-Newton RGS
- Inflowing Gas in the Central Parsec of M81
- CAHA/PPAK Integral-field Spectroscopic Observations of M81 -- I. Circumnuclear ionized gas
- The dynamics of the broad-line region in NGC 3227
- The X-ray variation of M81* resolved by Chandra and NuSTAR