Dynamics of gas in barred spiral galaxies. I - NGC 6221

Details Dynamics of gas in barred spiral galaxies. I - NGC 6221 Dynamics of gas in barred spiral galaxies. I - NGC 6221

Mar 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984mnras.207....9p&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 207, March 1, 1984, p. 9-23.

Astronomy and Astrophysics

Astronomy

50

Barred Galaxies, Gas Dynamics, Interstellar Gas, Galactic Nuclei, Line Spectra, Photographs, Spiral Galaxies, Velocity Distribution

Scientific paper

The southern galaxy NGC 6221, which exhibits very large noncircular gas motions, has been observed as part of a continuing study into the gas dynamics of barred spirals. A deprojected image of NGC 6221, simulating the face-on view, clearly shows the bar which is foreshortened on ordinary photographs. A faint third outer arm, or linear extension, indicates a possible tidal interaction with the nearby spiral companion NGC 6215, as does the presence of an asymmetric high velocity tail on the integrated H I profile. The gas velocity field has been mapped with a grid of long-slit spectra taken with the Anglo-Australian Telescope. The 465 velocity measurements are listed. A systemic velocity of 1475 km/s is derived and the approximate mass with a radius of 5.4 kpc is found to be 7 x 10 to the 10th solar masses. The small, very bright nucleus shows signs of moderate activity; the emission lines have an intense narrow peak (blueshifted) and a weak asymmetric broad component. The blueshifted emission seems to be related to the gas streaming around the bar.

Affiliated with

Also associated with

No associations

Rating

Dynamics of gas in barred spiral galaxies. I - NGC 6221 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 Dynamics of gas in barred spiral galaxies. I - NGC 6221, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dynamics of gas in barred spiral galaxies. I - NGC 6221 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1043069