===== First Extragalactic Detection of N2H+ =====

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, Maffei 2, IC342, M82, NGC6946\\
Facility: IRAM 30m


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

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