The First Detection of Neutral Hydrogen in Emission in a Strong Spiral
  Lens
  We report HI observations of eight spiral galaxies that are strongly lensing
background sources. Our targets were selected from the Sloan WFC (Wide Field
Camera) Edge-on Late-type Lens Survey (SWELLS) using the Arecibo, Karl G.
Jansky Very Large Array, and Green Bank telescopes. We securely detect
J1703+2451 at z=0.063 with a signal-to-noise of 6.7 and W50=79+/-13 km/s,
obtaining the first detection of HI emission in a strong spiral lens. We
measure a mass of M(HI)= 1.77+/-0.06(+0.35/-0.75) x 10^9 M_(sol) for this
source. We find that this lens is a normal spiral, with observable properties
that are fairly typical of spiral galaxies. For three other sources we did not
secure a detection; however, we are able to place strong constraints on the HI
masses of those galaxies. The observations for four of our sources were
rendered unusable due to strong radio frequency interference.
