The 2MZoA catalogue

The completion rate in redshifts is almost 75%. The catalogue is complete up to star density levels of at least logN*/deg^2^<4.3, but the completion rate of the fainter part is affected by foreground extinction at all levels. This can be rectified by using a diameter-dependent extinction correction, adding 1083 highly obscured but apparently faint galaxies (with Ko>11.75mag and Ko,d<=11.75mag) to the sample.

This extended sample shows good completion rates with extinction up to at least AK<1.3mag. Omission of such a diameter-dependent extinction correction may lead to a biased flow field even at intermediate extinction values as found in the 2MRS survey. As in our previous investigations, we do not find a dependence of the correction factor f=0.86 to the extinction maps on Galactic longitudes or latitudes, but note a possible influence by cosmic variance.