Detection of 19 lt-yr Long Bipolar Jets from Interacting Binary KX And

Abstract Bipolar jets with an apparent length of 20′ ejected from KX And have been discovered in the first data release of the Northern Sky Narrowband Survey. KX And is a well-studied interacting binary with mass transfer through Roche lobe overflow at a distance of about 760 pc. However, the faint jets, which are visible in H α light, have been overlooked in the past. With a known inclination of i ≈ 50° of the binary system, this leads to a true length of the jets of about 19 lt-yr (5.8 pc) in each direction.