A Search for Cloud Cores Affected by Shocked Carbon Chain Chemistry in L1251

We searched for shocked carbon chain chemistry (SCCC) sources with C$_3$S abundances surpassing those of HC$_5$N towards the dark cloud L1251, using Effelsberg telescope at K-band (18 -- 26\,GHz). L1251-1 and L1251-3 are identified as most promising SCCC sources. The two harbor young stellar objects. conducted mapping observations L1251-A, western tail $\lambda$ $\sim$3\,mm PMO 13.7 m NRO 45 telescopes in lines C$_2$H, N$_2$H$^+$, CS, HCO$^+$, SO, HC$_3$N C$^{18}$O well CO 3--2 JCMT. spectral data were combined archival including Spitzer Herschel continuum maps further analysis. Filamentary sub-structures labeled F1 to F6 extracted being associated L1251-A hosting L1251-1. peak positions dense gas traced by HCO$^+$ misaligned relative dust clumps. Episodic outflows common this region. twisted morphology velocity distribution along may originate from feedback. have been caused outflow activities originated infrared source IRS1. signposts ongoing broadened line widths C$_4$H also related (IRS1) together previously IRS3 demonstrate that is an excellent region study chemistry.