The nature of Cloud-9: a compact core embedded in a diffuse envelope

Ruilei Zhou, Ming Zhu, Chuan-Peng Zhang +1

We present new HI observations of Cloud-9 with the Five-hundred-meter Aperture Spherical Telescope (FAST), measuringvtotal flux of 0.35 +- 0.03 Jy km/s. Combined with Very Large Ar…