Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...295..324j&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 295, Aug. 15, 1985, p. 324-339.
Astronomy and Astrophysics
Astrophysics
48
Bulging, Disk Galaxies, Dynamic Models, Galactic Bulge, Galactic Structure, Astronomical Photography, Astronomical Photometry, Brightness Distribution, Kinematics, Oblate Spheroids
Scientific paper
Stationary, self-consistent, axisymmetric rotating models with energy and angular momentum integrals have been constructed for the bulges of the near edge-on disk galaxies NGC 7814 and NGC 4594. The models are capable of accurately fitting the observed two-dimensional surface brightness distributions and the observed kinematics with an assumption of constant M/L. The models demonstrate that all the available data on these two bulges are consistent with their being isotropic oblate spheroids in which the flattening is due mostly to rotation, but with a small contribution from the disk. The models also quantify the effect of the disk on the global dynamics of the bulge and show its importance to the interpretation of the (V/sigma, epsilon)-diagram. Of a sample of 10 bulges considered in the V/sigma-diagram with clearly defined disks, eight are more consistent with the bulge models coexisting with a disk than without. M/L values are derived for NGC 7814 and NGC 4594 and found to be consistent with recently observed values for elliptical galaxies.
Freeman Ken C.
Jarvis Brian J.
No associations
LandOfFree
The dynamics of galactic bulges - NGC 7814 and NGC 4594 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 The dynamics of galactic bulges - NGC 7814 and NGC 4594, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The dynamics of galactic bulges - NGC 7814 and NGC 4594 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-752962