Kinematical signatures of hidden stellar discs

Details Kinematical signatures of hidden stellar discs Kinematical signatures of hidden stellar discs

1999-02-02

arxiv.org/abs/astro-ph/9902033v1

Mon.Not.Roy.Astron.Soc. 302 (1999) 530

Astronomy and Astrophysics

Astrophysics

7 pages, 7 figures, uses mn.tex

Scientific paper

10.1046/j.1365-8711.1999.02135.x

The deprojection of the surface brightness distribution of an axisymmetric galaxy does not have a unique solution unless the galaxy is viewed precisely edge-on. I present an algorithm that finds the full range of smooth axisymmetric density distributions consistent with a given surface brightness distribution and inclination angle, and use it to investigate the effects of this non-uniqueness on the line-of-sight velocity profiles (VPs) of two-integral models of both real and toy disky galaxies viewed at a range of inclination angles. Photometrically invisible face-on disks leave very clear signatures in the minor-axis VPs of the models (Gauss--Hermite coefficients h_4>0.1), provided the disk-to-bulge ratio is greater than about 3%. I discuss the implications of these hitherto neglected disks for dynamical modelling.

Affiliated with

Also associated with

No associations

Rating

Kinematical signatures of hidden stellar discs 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 Kinematical signatures of hidden stellar discs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Kinematical signatures of hidden stellar discs will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-457817