Observing a column-dependent<i>ζ</i>in dense interstellar sources: the case of the Horsehead nebula
Observing a column-dependent<i>ζ</i>in dense interstellar sources: the case of the Horsehead nebula
Context: Observations of small carbon-bearing molecules such as CCH, C4H, c-C3H2, and HCO in the Horsehead Nebula have shown these species to have higher abundances towards the edge of the source than towards the center. Aims: Given the determination of a wide range of values for zeta (s-1), the total …