Nuclear and large-scale outflow in NGC 1808

Details Nuclear and large-scale outflow in NGC 1808 Nuclear and large-scale outflow in NGC 1808

Feb 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aj....105..486p&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 105, no. 2, p. 486-498.

Astronomy and Astrophysics

Astrophysics

77

Barred Galaxies, Flow Velocity, H Alpha Line, H Ii Regions, Nuclear Astrophysics, Red Shift, Broadband, Line Shape, Metal Ions, Radial Velocity, Sodium

Scientific paper

NGC 1808 has been studied via deep broad-band and H-alpha images and longslit spectroscopy around the Na I D and H-alpha lines. In particular, Na I is seen blueshifted in absorption and redshifted in emission, providing incontrovertible proof of outflow. B-R images show that the dust plumes associated with the outflow reach about 3 kpc or more above the plane. The morphology of the outflow is complex. Nuclear emission and absorption line profiles show pronounced blue wings similar to those seen in far-IR luminous galaxies (FIRGs), and indicate nuclear outflow velocities up to 700 km/s. The classification of NGC 1808 as a Seyfert 2 is reviewed and dismissed; rather, on the basis of line profiles and ratios and the presence of the 'superwind', NGC 1808 is probably an example of the FIRG phenomenon.

Affiliated with

Also associated with

No associations

Rating

Nuclear and large-scale outflow in NGC 1808 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 Nuclear and large-scale outflow in NGC 1808, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nuclear and large-scale outflow in NGC 1808 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1272248