A constant N2H+ (1-0)-to-HCN (1-0) ratio on kiloparsec scales

Nitrogen hydrides such as NH3 and N2H+ are widely used by Galactic observers to trace the cold dense regions of the interstellar medium. In external galaxies, because of limited sensitivity, HCN has become the most common tracer of dense gas over large parts of galaxies. We provide the first systema...

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Main Authors:	Jiménez-Donaire, Maria Jesús (Author) , Usero, A. (Author) , Bešlić, I. (Author) , Tafalla, M. (Author) , Chacón-Tanarro, A. (Author) , Salomé, Q. (Author) , Eibensteiner, C. (Author) , García-Rodríguez, A. (Author) , Hacar, A. (Author) , Barnes, A. T. (Author) , Bigiel, Frank (Author) , Chevance, Mélanie (Author) , Colombo, D. (Author) , Dale, D. A. (Author) , Davis, T. A. (Author) , Glover, Simon (Author) , Kauffmann, J. (Author) , Klessen, Ralf S. (Author) , Leroy, A. K. (Author) , Neumann, L. (Author) , Pan, H. (Author) , Pety, J. (Author) , Querejeta, M. (Author) , Saito, T. (Author) , Schinnerer, Eva (Author) , Krieger, Sophia K. (Author) , Williams, T. G. (Author)
Format:	Article (Journal) Editorial
Language:	English
Published:	17 August 2023
In:	Astronomy and astrophysics Year: 2023, Volume: 676, Pages: 1-8
ISSN:	1432-0746
DOI:	10.1051/0004-6361/202347050
Online Access:	Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1051/0004-6361/202347050 Verlag, lizenzpflichtig, Volltext: https://www.aanda.org/articles/aa/abs/2023/08/aa47050-23/aa47050-23.html
Author Notes:	M.J. Jiménez-Donaire, A. Usero, I. Bešlić, M. Tafalla, A. Chacón-Tanarro, Q. Salomé, C. Eibensteiner, A. García-Rodríguez, A. Hacar, A.T. Barnes, F. Bigiel, M. Chevance, D. Colombo, D.A. Dale, T.A. Davis, S.C.O. Glover, J. Kauffmann, R.S. Klessen, A.K. Leroy, L. Neumann, H. Pan, J. Pety, M. Querejeta, T. Saito, E. Schinnerer, S. Stuber, and T.G. Williams