===== First Extragalactic Detection of HCO+ =====

A. A. Stark and R. S. Wolff,\\
**[[https://ui.adsabs.harvard.edu/abs/1979ApJ...229..118S|Some observations of extragalactic HCO<sup>+</sup> and HCN]]**,\\
//Astrophys. J.// **229**, 118-120 (1979).

Source(s): M82\\
Facility: Bell Labs 7m\\



----

==== First Extragalactic Detection of H13CO+ ====

R. Mauersberger and C. Henkel\\
**[[https://ui.adsabs.harvard.edu/abs/1991A%26A...245..457M|Dense gas in nearby galaxies. IV - The detection of N<sub>2</sub>H<sup>+</sup>, SiO, H<sup>13</sup>CO<sup>+</sup>, H<sup>13</sup>CN, and HN<sup>13</sup>C]]**,\\
//Astron. Astrophys.// **245**, 457-466 (1991).

Source(s): NGC253, IC342, and tentatively in M82\\
Facility: IRAM 30m


----

==== First Extragalactic Detection of DCO+ ====

Y.-N. Chin, C. Henkel, T. J. Millar, J. B. Whiteoak, and R. Mauersberger, R.\\
**[[https://ui.adsabs.harvard.edu/abs/1996A%26A...312L..33C3|Molecular abundances in the Magellanic Clouds. II. Deuterated species in the LMC]]**,\\
//Astron. Astrophys.// **312**, L33-L36 (1996).

Source(s): LMC\\
Facility: SEST 15m

----

Contributor(s): S. Thorwirth; 09/2005

----