Search with COPERNICUS for interstellar N/sub 2/ in diffuse clouds

Journal Article · Mon Jan 01 00:00:00 EST 1979 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/156715· OSTI ID:6469619

Lutz, B L; Owen, T; Snow, Jr, T P

Multiple Copernicus scans of the rho'/sup 1/..sigma../sub u//sup +/--X/sup 1/..sigma../sub g//sup +/(0--0) and l/sup 1/Pi/sub u/--X/sup 1/..sigma../sub g//sup +/(0--0) band regions of N/sub 2/ in the spectra of delta Sco and epsilon Per result in upper limits of N (N/sub 2/) < or =1.0--3.8 x 10/sup 12/ cm/sup -2/ and N (N/sub 2/) < or =1.2--4.4 x 10/sup 12/ cm/sup -2/, respectively, depending upon the cloud temperature. These limits are consistent with the column densities expected from current chemical models for diffuse interstellar clouds, representing relative abundances with respect to hydrogen nuclei of N (N/sub 2/)/2N (H/sub 2/)+N (H I) < or =0.69--2.6 x 10/sup -9/ for delta Sco and < or =0.31--1.1 x 10/sup -8/ for epsilon Per.

• Research Organization: State University of New York at Stony Brook
• OSTI ID: 6469619
• Journal Information: Astrophys. J.; (United States), Vol. 227:1
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
INTERSTELLAR SPACE
NITROGEN
COSMOCHEMISTRY
ABUNDANCE
CHEMICAL COMPOSITION
ENERGY-LEVEL TRANSITIONS
EXPERIMENTAL DATA
ISOLATED VALUES
MOLECULES
ULTRAVIOLET SPECTRA
CHEMISTRY
CRYOGENIC FLUIDS
DATA
DATA FORMS
ELEMENTS
FLUIDS
INFORMATION
NONMETALS
NUMERICAL DATA
SPACE
SPECTRA
640105* - Astrophysics &amp; Cosmology- Galaxies