2003A&A...412..387B


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.23CEST02:31:12

2003A&A...412..387B - Astronomy and Astrophysics, volume 412, 387-398 (2003/12-3)

Simulations of dual morphology in spiral galaxies.

BERMAN S.L.

Abstract (from CDS):

Gas and stars in spiral galaxies are modelled with a combination of hydrodynamic and N-body techniques. The simulations reveal morphological differences mirroring the dual morphologies seen in B and K' band observations of many spiral galaxies: gaseous images have tighter pitch angles, are more asymmetric, more flocculent and more likely to have multiple arms. Morphological decoupling increases as the stellar arm-interarm contrast and the Q parameter fall. The flocculence of a galaxy is quantified by decomposing the images into logarithmic spirals and defining a parameter closely related to the uniformity of the resulting 2D Fourier spectrum. Thus, a significant amount of morphological decoupling in spiral galaxies is shown to be due to the difference in the dynamics of stars and gas, rather than dust, star formation or galaxy interactions.

Abstract Copyright:

Journal keyword(s): hydrodynamics - galaxies: ISM - galaxies: structure - galaxies: spiral - galaxies: fundamental parameters - infrared: galaxies

Simbad objects: 7

goto Full paper

goto View the reference in ADS

Number of rows : 7

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NGC 2997 GiG 09 45 38.7537949543 -31 11 27.357027761   9.97 9.41 8.84 9.9 ~ 383 0
2 NGC 3223 EmG 10 21 35.076 -34 16 00.44   11.82 10.82 10.35 11.2 ~ 161 0
3 NGC 3810 GiG 11 40 58.737 +11 28 16.07   11.4       ~ 306 1
4 NGC 3893 GiP 11 48 38.207 +48 42 38.84   11.23 10.67     ~ 335 1
5 NGC 5085 GiG 13 20 17.9 -24 26 25   11.99 11.12 10.62 11.0 ~ 87 0
6 M 51 GiP 13 29 52.698 +47 11 42.93   9.26 8.36 8.40   ~ 3833 4
7 NGC 5364 GiP 13 56 12.004 +05 00 52.06   13.2       ~ 234 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2003A&A...412..387B and select 'bookmark this link' or equivalent in the popup menu


2020.10.23-02:31:12

© Université de Strasbourg/CNRS

    • Contact