Distribution of Star-Forming Sites in Barred Spiral Galaxies

Details Distribution of Star-Forming Sites in Barred Spiral Galaxies Distribution of Star-Forming Sites in Barred Spiral Galaxies

Dec 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aas...183.2306p&link_type=abstract

American Astronomical Society, 183rd AAS Meeting, #23.06; Bulletin of the American Astronomical Society, Vol. 25, p.1329

Astronomy and Astrophysics

Astronomy

2

Scientific paper

Narrow-band \Hα\ images of 15 SBb and SBc galaxies have been used to survey star formation properties of barred spiral galaxies. Integrated \Hα\ luminosities and surface brightness measures, as well as the spatial and luminosity distribution of \HIIR s, are determined. Here we present the results concerning the distribution of star-forming sites in these galaxies. Barred spirals display a wide range in their star formation properties. Within the sample, properties tend to fall into two categories, which roughly correlate with Hubble type. SBb galaxies show moderate to virtually no (massive) star formation in their bars, except in the circumnuclear regions where star formation rates (SFRs) can be extreme. Outside the bar, \HIIR s appear concentrated in ring-like structures corresponding to the inner rings of ring galaxies. SBc galaxies generally have luminous \HIIR s in their bars, lack circumnuclear starbursts, and inner rings are much less pronounced. These differences also correlate with the ``flat'' and ``exponential'' bar types defined by Elmegreen & Elmegreen (1985). SFRs per unit area are generally enhanced where the bar joins the spiral arms, especially in SBb galaxies. Enhancements range from slight to factors ~ 3, and may be quite different at the two bar ends.

Affiliated with

Also associated with

No associations

Rating

Distribution of Star-Forming Sites in Barred Spiral Galaxies 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 Distribution of Star-Forming Sites in Barred Spiral Galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Distribution of Star-Forming Sites in Barred Spiral Galaxies will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-778310