KUG 0200-096: Dwarf antennae hosting a tidal dwarf galaxy
  We study a gas rich merging dwarf system KUG 0200-096. Deep optical image
reveals an optically faint tail with a length of 20 kpc, giving a visual
impression of tidal antenna similar to NGC 4038/39. The interacting dwarf
galaxies have B-band absolute magnitudes -18.06 and -16.63 mag. We identify a
young stellar clump of stellar mass of 2$\times$10$^{7}$ M$_{\sun}$ at the tip
of the antenna, possibly a Tidal Dwarf Galaxy (TDG). The putative TDG candidate
is quite blue with $g-r$ color index of -0.07 mag, whereas the interacting
dwarf galaxies have $g-r$ color indices 0.29 and 0.19 mag. The TDG is currently
forming star at the rate of 0.02 M$_{\sun}$/yr. We obtained HI 21 cm line data
of KUG 0200-096 using the GMRT to get a more detailed view of neutral hydrogen
(HI) emission in interacting dwarf galaxies and its TDG. Evidence of merger
between the dwarf galaxy pair is also presence in HI kinematics and morphology
where we find the HI contents of interacting pair is disturbed, forming a
extended tail toward the TDG. The HI velocity field shows strong gradient along
the HI tidal tail extension. We present a comparative study between the
Antennae galaxy, NGC 4038/39, and KUG 0200-096 in both optical and HI gas
properties and discuss possible origin of KUG 0200-096 TDG.
