SIMBAD references

We perform two-dimensional time dependent hydrodynamical simulations of the barred spiral galaxy NGC 1300. The input potential is divided into an axisymmetric part mainly derived from the observed rotation curve, and a perturbing part obtained from near infrared surface photometry of the bar and spiral structure. Self-gravitation of the gas is not taken into account in our modeling. A pure bar perturbed model is unable to reproduce the observations. It was found necessary to add a weak spiral potential to the perturbation, thus suggesting the presence of massive spiral arms in NGC 1300. We find two models, differing mainly in pattern speed, which are able to reproduce the essentials of NGC 1300. The high pattern speed model has {OMEGA}_p=20km/s/kpc, corresponding to a corotation radius at R_CR∼104"=1.3R_bar. Furthermore, the adopted rotation curve for this model supports one ILR at R_ILR∼26" and an OLR at R_OLR∼188". The low pattern speed model has {OMEGA}_p=12km/s/kpc, corresponding to a corotation radius at R_ CR_∼190"=2.4Rbar_. The adopted rotation curve for this model, which differs from the fast pattern speed model, supports one ILR at R_ILR∼25" and an OLR at R_OLR∼305". Morphological features, like spiral arms and offset dust lanes, are basically reproduced by both models. They are driven by orbit crowding effects across various resonances, leading to density enhancements. The general velocity structure, as described by HI data and optical long slit measurements, is fairly consistent with the model velocities.