J/A+AS/137/419 J/A+AS/137/419 Dynamics of blue compact galaxies I. The data G Oestlin P Amram J Masegosa N Bergvall J Boulesteix Astron. Astrophys. Suppl. Ser. 137 419 1999 1999A&AS..137..419O Galaxies, rotation Rotational velocities galaxies: compact galaxies: interactions galaxies: ISM galaxies: kinematics and dynamics galaxies: starburst Observations of six luminous blue compact galaxies (BCGs) and two star forming companion galaxies were carried out with the CIGALE scanning Fabry-Perot interferometer attached to the ESO 3.6m telescope on La Silla. The observations were made in the H-alpha emission line which is prominent in BCGs. A velocity sampling of 5km/s and a pixel size of 0.9arcseconds were used. In this paper we present the observations and the data together with the velocity fields and the derived rotation curves. In addition we provide rough estimates of the total dynamical mass and of the ionised gas mass for each galaxy. All galaxies display rotation, but while the companion galaxies have regular velocity fields, those of the BCGs are complex and appear perturbed. This is the most extensive study to date of the optical velocity fields of BCGs. The interpretation of these results will be presented in a forthcoming paper (Paper II).

Name Galaxy name --- Model Model version number=1 Some galaxies have been modelled in different ways, e.g. decomposing the velocity field (VF) into two components. When present the label Model indicates which model the rotation curve (RC) refers to. Total = RC built from the non decomposed velocity field 1st = RC built from the first component of the decomposed VF 2nd = RC built from the second component of the decomposed VF Main = RC built from the main component of the non decomposed VF FP1 = RC built from observations with Fabry-Perot interferometer 1 Masked = RC built after masking points in the non decomposed VF East = RC refers to the first component of the eastern galaxy West = RC refers to the first component of the western galaxy For further explanations of the different models see paper. --- Rad Mean radius of the annulus on the major axis arcsec o_Vapp Number of points for the approaching side number=2 The number of velocity points included in calculating the velocity at the given radius --- Vapp Weighted average velocity for approaching side km/s e_Vapp rms uncertainty on Vapp km/s o_Vrec Number of points for the receding side number=2 The number of velocity points included in calculating the velocity at the given radius --- Vrec Weighted average velocity for receding side km/s e_Vrec rms uncertainty on Vrec km/s o_Vtot Total Number of points = o_Vapp + o_Vrec --- Vtot Weighted average velocity for both sides km/s e_Vtot rms uncertainty on Vtot km/s Patricia Bauer CDS 1999Feb25Goran Ostlin <ostlin@iap.fr> J_A+AS_137_419.xml