We present CO ( 1–0 ) and CO ( 2–1 ) line emission maps of the barred spiral active galaxy HEÂ 1029-1831 ( z=0.0403 ) obtained with the IRAM Plateau de Bure Interferometer ( PdBI ) and in part by the Berkeley-Illinois-Maryland Association ( BIMA ) observatory .
The CO emission is well associated with the optical bar and extended along it .
The FWHM of the CO emission is estimated to be \sim ( 6 \pm 2 ) Â kpc .
The CO emission shows a strong velocity gradient along the minor axis of the bar ( PA=90 ^ { \circ } ) .
The molecular gas mass is estimated to be \sim 1.2 \times 10 ^ { 10 } \mathcal { M } _ { \odot } which indicates a very gas rich host galaxy .
Most of the molecular gas appears to be subthermally excited and cold but we also find weak evidence for a warmer and/or denser gas component at the southern part of the bar emission , about \sim 4Â kpc from the galactic nucleus .