The structure of groups of galaxies in the UMa/CVn region- I. A discussion of the results of an H I survey.

December 1982 • 1982MNRAS.201.1073A

Authors • Appleton, P. N. • Davies, R. D.

Abstract • A neutral hydrogen survey has been made of galaxies in an area of about 110 square degrees in Ursa Major and Canes Venatici, and the data yield many new accurate systemic velocities, H I masses and total masses. The spatial distribution and velocity structure of the area is presented and a detailed discussion is given of the global properties of the individual galaxies. This discussion lays the groundwork for an analysis of group structures which will be presented in Paper II. The results of the survey show that the Ursa Major/Canes Venatici region contains possibly four associations of galaxies identifiable both in position and velocity. For this part of the sky, any method of defining groups of galaxies based on positional information alone can be subject to serious problems because of contamination by foreground and background groups.

Links

• SIMBAD http://simbad.u-strasbg.fr/simbo.pl?bibcode=1982MNRAS.201.1073A
• NED https://ned.ipac.caltech.edu/uri/NED::InRefcode/1982MNRAS.201.1073A
• ELECTR http://dx.doi.org/10.1093/mnras/201.4.1073
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• ARTICLE http://articles.adsabs.harvard.edu/full/1982MNRAS.201.1073A?defaultprint=YES