NIR Tully-Fisher in the Zone of Avoidance. - II. 21 cm HI-line spectra
  of southern ZOA galaxies
  High-accuracy HI profiles and linewidths are presented for inclined ($(b/a)^o
< 0.5$) spiral galaxies in the southern Zone of Avoidance (ZOA). These galaxies
define a sample for use in the determinations of peculiar velocities using the
near-infrared Tully-Fisher (TF) relation. The sample is based on the 394
HI-selected galaxies from the Parkes HI Zone of Avoidance survey (HIZOA).
Follow-up narrow-band Parkes HI observations were obtained in 2010 and 2015 for
290 galaxies, while for the further 104 galaxies, sufficiently high
signal-to-noise spectra were available from the original HIZOA data. All 394
spectra are reduced and parameterized in the same systematic way. Five
different types of linewidth measurements were derived, and a Bayesian mixture
model was used to derive conversion equations between these five widths. Of the
selected and measure galaxies, 342 have adequate signal-to-noise (S/N $\geq$ 5)
for use in TF distance estimation. The average value of the signal-to-noise
ratio of the sample is 14.7. We present the HI parameters for these galaxies.
The sample will allow a more accurate determination of the flow field in the
southern ZOA which bisects dynamically important large-scale structures such as
Puppis, the Great Attractor, and the Local Void.
