A Search for double-lobed radio emission from Galactic Stars and Spiral
  Galaxies
  We present a systematic search for two types of very unusual astronomical
objects: Galactic stars and spiral galaxies with double radio lobes, i.e. radio
emission on opposite sides of the optical object, suggesting the ejection of
jets from them. We designed an algorithm to search for pairs of radio sources
straddling objects from two unprecedented samples of 878,031 Galactic stars
from the Sloan Digital Sky Survey and 675,874 spiral galaxy candidates drawn
from the recent literature. We found three new examples of double-lobed radio
stars, while for the spiral galaxies we only rediscovered one known such double
source, confirming that the latter objects are extremely rare.
