Luminous Infrared Galaxies. II. NGC 4945: A Nearby Obscured Starburst/Seyfert Nucleus

Astronomy and Astrophysics – Astronomy

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

13

Galaxies: Individual Ngc Number: Ngc 4945, Galaxies: Kinematics And Dynamics, Galaxies: Nuclei, Galaxies: Seyfert, Galaxies: Structure

Scientific paper

We have studied the physical conditions, reddening, and kinematics in the nuclear and circumnuclear regions of the luminous IR source NGC 4945. The I-band image shows a wide cone of radiation that emerges from the partially obscured nuclear region. The H alpha + [N II] image reveals an extended nuclear region located at the same position as the I-band nucleus. Two extended filaments emerge from this region as well. Aperture optical spectroscopy of the nuclear region shows strong reddening in the continuum, and only the blends H alpha + [N II] and [S II] appear in emission. The long-slit spectroscopy at P.A. = 90 deg, coincident with the main H alpha filament, shows in the nuclear region a weak [O I] LINER or weak [O III] Seyfert spectrum and blueshifted broad components in the [N II] and [S II] lines that are probably associated with superwinds. The velocity curve (at P.A. = 90 deg) is clearly asymmetric, with the mean velocity shifted toward the obscured nuclear region.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Luminous Infrared Galaxies. II. NGC 4945: A Nearby Obscured Starburst/Seyfert Nucleus 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 Luminous Infrared Galaxies. II. NGC 4945: A Nearby Obscured Starburst/Seyfert Nucleus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Luminous Infrared Galaxies. II. NGC 4945: A Nearby Obscured Starburst/Seyfert Nucleus will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-1878290

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.