FIGGS2: An HI survey of extremely faint irregular galaxies
  We present the observations and first results from the FIGGS2 survey. FIGGS2
is an extension of the earlier Faint Irregular Galaxies GMRT survey (FIGGS)
towards faint luminosity end. The sample consists of 20 galaxies of which 15
were detected in HI 21cm line using the Giant Meter-wave Radio Telescope
(GMRT). The median blue band magnitude of our sample is ~ -11.6, which is more
than one magnitude fainter than earlier FIGGS survey. From our GMRT
observations we find that, for many of our sample galaxies, the HI disks are
offset from their optical disks. The HI diameters of the FIGGS2 galaxies show a
tight correlation with their HI mass. The slope of the correlation is 2.08 +/-
0.20 similar to what is found for FIGGS galaxies. We also find that for almost
all galaxies, the HI disks are larger than the optical disks which is a common
trend for dwarf or spiral galaxies. The mean value of the ratio of HI to
optical diameter is ~ 1.54.
