Dense gas in nearby galaxies. IV - The detection of N2H(+), SiO, H(C-13)O(+), H(C-13)N, and HN(C-13)

Details Dense gas in nearby galaxies. IV - The detection of N2H(+), SiO, H(C-13)O(+), H(C-13)N, and HN(C-13) Dense gas in nearby galaxies. IV - The detection of N2H(+), SiO, H(C-13)O(+), H(C-13)N, and HN(C-13)

May 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...245..457m&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 245, no. 2, May 1991, p. 457-466.

Astronomy and Astrophysics

Astrophysics

43

Cosmic Gases, Cosmochemistry, Galactic Nuclei, Molecular Clouds, Nitrogen Hydrides, Silicon Oxides, Spiral Galaxies

Scientific paper

First detections of extragalactic N2H(+), SiO, H(C-13)O(+), H(C-13)N, and HN(C-13) are reported in an effort to study the properties of the dense molecular gas in the nuclei of nearby spirals with high infrared luminosities. The J = 1-0 line of N2H(+) was observed in the central parts of NGC 253, Maffei 2, IC 342, M82, and NGC 6946. Unlike other density tracing molecules in M82, N2H(+) is stronger toward the center of the galaxy than toward its ring. Toward the southwestern hotspot, densities become so large that even HCO(+) appears to be depleted. The N2H(+)/CS, N2H(+)/CO, SiO/CS, SiO/HCN, and SiO/HCO(+) intensity ratios of the present extragalactic sources are all within the range observed in the Galaxy and provide important clues for the physical and chemical state of the gas. The H(C-13)N/HN(C-13) integrated line intensity ratio of NGC253 is substantially larger than in cool dark clouds.

Affiliated with

Also associated with

No associations

Rating

Dense gas in nearby galaxies. IV - The detection of N2H(+), SiO, H(C-13)O(+), H(C-13)N, and HN(C-13) does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Dense gas in nearby galaxies. IV - The detection of N2H(+), SiO, H(C-13)O(+), H(C-13)N, and HN(C-13), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dense gas in nearby galaxies. IV - The detection of N2H(+), SiO, H(C-13)O(+), H(C-13)N, and HN(C-13) will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1035214