Morphology of the ionized gas in NGC 1313.
Abstract
A catalogue of 375 H II regions in the barred spiral galaxy NGC 1313 has been drawn from the analysis of an Hα plate taken with a focal reducer and image tube behind the 3.6 m ESO telescope. The H II regions in this SBd galaxy appear to be rather small with an average diameter D0 = 18.4 pc at 4.5 Mpc. The brightest regions are found in the arms, suggesting a stronger density wave there than in the bar. The southern satellite regions, quite apart from the spiral pattern, are interpreted as the result of a recent accretion of H I clouds, causing the asymmetric rotation pointed out by Marcelin and Athanassoula (1982).
- Publication:
-
Astronomy and Astrophysics Supplement Series
- Pub Date:
- February 1983
- Bibcode:
- 1983A&AS...51..353M
- Keywords:
-
- Astronomical Catalogs;
- Barred Galaxies;
- Interstellar Gas;
- Ionized Gases;
- Brightness;
- H Ii Regions;
- Luminosity;
- Tables (Data);
- Astronomy