HI in NGC3263 / NGC3256

• HI in NGC3263
• HI in NGC3256
• HI in NGC3256B, NGC3256C
• HI in NGC3263 and surrounding

HI distribution of NGC3263 and neighbour galaxies

Description of the data reduction by Bärbel Koribalski

• Standard calibration in AIPS, further steps in MIRIAD
• ATLOD with Hanning smoothing (chansel=2,513,2; dparm=0,1)
• ....
• FITS (in=NGC3263_IF1.SPLIT; op=uvin; out=ngc3263_if1.split; velocity=optbary)
  IF1 (center freq., bandwidth, channel) = 1406 MHz, 8 MHz, 256
• PUTHD (in=ngc3263_if1.split/restfreq; value=1.420405752d0)
• UVLIN (vis=ngc3263_if1.split; chans=20,50,180,230; out=ngc3263_if1.uvlin; order=1)
  first attempt; no quite correct for NGC3256B and NGC3256C
• INVERT e.g. (vis=ngc3263_if1.uvlin,ngc3263_if1.uvlin2; map=n3263.imap; beam=n3263.ibeam; imsize=500; cell=7; sup=0; stokes=i; line=velocity,100,2620,6.593; options=double,nocal,nopol,nopass
• CLEAN e.g. (map=n3263.imap; beam=n3263.ibeam; out=n3263.icmp; gain=0.15; niter=500; region=abspix,box(1,1,500,500); minpatch=51)
• RESTOR (map=n3263.imap; beam=n3263.ibeam; model=n3263.icmp; out=n3263.icln)
• MOMENT e.g. (in=n3263.icln; out=n3263_env5.mom0; mom=0; axis=3; clip=0.005)