astro-ph/0204231.

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Analysis of the distribution of HII regions in external galaxies
IV The new galaxy sample. Position and inclination angles

C. García-Gómez1, E. Athanassoula2, and C. Barberà1

1 D.E.I.M., Campus Sescelades, Avd. dels Països Catalans 26, 43007
Tarragona, Spain
2 Observatoire de Marseille, 2 Place Le Verier, 13248 Marseille cedex 04, France


Abstract. We have compiled a new sample of galaxies with published catalogs of HII region coordinates. This sample, together with the former catalog of García-Gómez and Athanassoula (1991), will form the basis for subsequent studies of the spiral structure in disc galaxies. In this paper we address the problem of the deprojection of the galaxy images. For this purpose we use two deprojection methods based on the HII region distribution and compare the results with the values found in the literature using other deprojection methods. Taking into account the results of all the methods, we propose optimum values for the position and inclination angles of all the galaxies in our sample.

Key words. galaxies-structure-spiral galaxies-interstellar medium:HII regions


Table of Contents

INTRODUCTION

THE SAMPLE

DEPROJECTION METHODS

NOTES ON INDIVIDUAL GALAXIES

DISCUSSION

REFERENCES

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