SIMBAD references

We present a highly sensitive 2D line survey of TMC-1 obtained with the Yebes 40 m radio telescope in the Q-band (31.13-49.53 GHz). These maps cover a region of 320″×320″ centred on the position of the QUIJOTE line survey with a spatial sampling of 20″. The region covering 240″×240″, where a longer integration time was used, shows a homogenous sensitivity of 2-4 mK across the band. We present in this work the first determination of the spatial extent of benzonitrile (C₆H₅CN), which follows that of cyanopolyynes rather well, but differs significantly from that of the radicals C_nH and C_nN. We definitively conclude that aromatic species in TMC-1 are formed from chemical reactions involving smaller species in the densest zones of the cloud.