Identification of the 890 cm-1 carbonate signature in NGC 7027.
Abstract
High-resolution spectroscopic measurements of the 11 micron continuum emission from NGC 7027 indicate that MgCO3 is a constituent of the dust in the nebula. Other carbonate compounds may also be present in concentrations approximately 1 order of magnitude below that of MgCO3. Dust-grain temperatures combined with the abundance of MgCO3 require that most of the material composing the grains must be carbon or C, N, O compounds.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- February 1975
- DOI:
- 10.1086/181725
- Bibcode:
- 1975ApJ...195L.125B
- Keywords:
-
- Carbonates;
- Cosmic Dust;
- Infrared Astronomy;
- Planetary Nebulae;
- Spectral Signatures;
- Black Body Radiation;
- Emission Spectra;
- Interstellar Matter;
- Magnesium Compounds;
- Astrophysics