On the space density of polar-ring galaxies

Details On the space density of polar-ring galaxies On the space density of polar-ring galaxies

Jul 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007dyga.conf...39r&link_type=abstract

Dynamics of Galaxies, Abstracts of the International Conference held at Pulkovo Observatory, 6-10 August 2007, St.Petersburg, Ru

Astronomy and Astrophysics

Astronomy

Galaxies, Evolution Of Galaxies, Luminosity Function

Scientific paper

In order to determine the space density of polar-ring galaxies (PRGs), we have estimated the B-band luminosity function of galaxies in the range of absolute magnitudes (M(B)) from -17.5 to -21.5. It was shown that this luminosity function can be approximated by the Schechter function with parameters close to the values for field galaxies (besides the normalisation): alpha=-1.27, M*(B)=-19.84, and phi*=1.1×10^{-5} Mpc^{-3}. We find that about 0.001 of all nearby galaxies appear to have polar rings. Polar-ring galaxies with early-type hosts are about 3 times more numerous per unit of space than galaxies with spiral hosts.
We predict that about 20-30 galaxies with large-scale "face-on" polar structures must exist among relatively bright (B<15 mag) galaxies. Such objects are not discovered still. Probably, they will look like barred galaxies with extended low surface brightness rings or disks.

Affiliated with

Also associated with

No associations

Rating

On the space density of polar-ring 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 On the space density of polar-ring galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the space density of polar-ring galaxies will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1662742