Computer Science
Scientific paper
Jul 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996hst..prop.6674c&link_type=abstract
HST Proposal ID #6674
Computer Science
Hst Proposal Id #6674 Galaxies &Amp, Clusters
Scientific paper
The nearby {17 Mpc}, nearly edge-on spiral galaxy NGC 3079 contains the most energetic known example of a windblown superbubble. The bubble has ionized mass 10^7/n_e Msun and kinetic energy 2x^56/n_e ergs {for average electron density n_e}, a compact apex at the nucleus, and protrudes 1 kpc {12"} above the disk plane. It is the visually emitting part of a larger superwind-driven complex that comprises radio loops and spatially extended thermal x-ray emission. Our Fabry -Perot spectrophotometry has mapped Doppler velocity gradients of >1150kms across the superbubble, and we infer that space velocities increase radially from the nucleus. The boundary just resolves in 1" seeing. However, the emission-line profiles here range over 350 kms, indicating unresolved {turbulent?} kinematic substructure. An HST WFPC2 image is required to resolve fluctuations in surface brightness across the superbubble. These will improve constraints on the gaseous volume filling factor, and establish if the input kinetic energy comes solely from the starburst {small filling factor} or if the AGN must also contribute. If the AGN dominates, the superbubble will join the NLR of NGC 1068 as the most spatially extended structures thought to have been blown by an accretion-disk wind. The proposed image of this superbubble will provide insight into the simultaneity of AGN/starbursts, jet formation and collimation, winds in broad- absorption line quasars, and the extended x-ray halos of galaxies.
No associations
LandOfFree
Fine Structure in the Nuclear Superbubble of NGC 3079 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 Fine Structure in the Nuclear Superbubble of NGC 3079, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fine Structure in the Nuclear Superbubble of NGC 3079 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1118176