A Morphological-type dependence in the mu_0-log(h) plane of Spiral galaxy disks

Details A Morphological-type dependence in the mu_0-log(h) plane of Spiral galaxy disks A Morphological-type dependence in the mu_0-log(h) plane of Spiral galaxy disks

2001-03-24

arxiv.org/abs/astro-ph/0103405v1

Astrophys.J., v.556, p.177 (2001)

Astronomy and Astrophysics

Astrophysics

To be published in ApJ. Inc. three two-part figures

Scientific paper

10.1086/321566

We present observational evidence for a galaxy `Type' dependence to the location of a spiral galaxy's disk parameters in the mu_0-log(h) (central disk surface-brightness - disk scale-length) plane. With a sample of ~40 Low Surface Brightness galaxies (both bulge- and disk-dominated) and ~80 High Surface Brightness galaxies, the early-type disk galaxies (<=Sc) tend to define a bright envelope in the mu_0-log(h) plane, while the late-type (>=Scd) spiral galaxies have, in general, smaller and fainter disks. Below the defining surface brightness threshold for a Low Surface Brightness galaxy (i.e. more than 1 mag fainter than the 21.65 B-mag arcsec^(-2) Freeman value), the early-type spiral galaxies have scale-lengths greater than 8-9 kpc, while the late-type spiral galaxies have smaller scale-lengths. All galaxies have been modelled with a seeing-convolved Sersic r^(1/n) bulge and exponential disk model. We show that the trend of decreasing bulge shape parameter (n) with increasing Hubble type and decreasing bulge-to-disk luminosity ratio, which has been observed amongst the High Surface Brightness galaxies, extends to the Low Surface Brightness galaxies, revealing a continuous range of structural parameters.

Affiliated with

Also associated with

No associations

Rating

A Morphological-type dependence in the mu_0-log(h) plane of Spiral galaxy disks 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 A Morphological-type dependence in the mu_0-log(h) plane of Spiral galaxy disks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Morphological-type dependence in the mu_0-log(h) plane of Spiral galaxy disks will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-294396