We present 6 and 20 cm JVLA/VLA observations of the northern head of the HH 80/81/80N jet , one of the largest collimated jet systems known so far , aimed to look for knots further away than HH 80N , the northern head of the jet .
Aligned with the jet and 10′ northeast of HH 80N , we found a radio source not reported before , with a negative spectral index similar to that HH 80 , HH 81 and HH 80N .
The fit of a precessing jet model to the knots of the HH 80/81/80N jet , including the new source , shows that the position of this source is close to the jet path resulting from the modeling .
If the new source belongs to the HH 80/81/80N jet , its derived size and dynamical age are 18.4 pc and > 9 \times 10 ^ { 3 } yr , respectively .
If the jet is symmetric , its southern lobe would expand beyond the cloud edge resulting in an asymmetric appearance of the jet .
Based on the updated dynamical age , we speculate on the possibility that the HH 80/81/80N jet triggered the star formation observed in a dense core found ahead of HH 80N , which shows signposts of interaction with the jet .
These results indicate that pc scale radio jets can play a role on the stability of dense clumps and the regulation of star formation in the molecular cloud .