Abstract
SEVERAL infrared bands found recently in astronomical sources have not been assigned to specific substances in a convincing way (see refs 1–6). Resonance features in solids seem to be the most plausible emission and absorption mechanisms, but the features cannot be identified with known or suspected compounds in the interstellar dust grains such as silicates, water ice, silicon carbide, or graphite. We propose here a new substance, consisting of carbonaceous material, which may be responsible for some or all of the unidentified infrared features.
Similar content being viewed by others
References
Gillett, F. C., Forrest, W. J. & Merrill, K. M. Astrophys. J. 183, 87 (1973).
Grasdalen, G. & Joyce, R. R. Astrophys. J. Lett. 205, L11 (1976).
Merrill, K. M., Soifer, B. T. & Russell, R. W. Astrophys. J. Lett. 200, L37 (1975).
Bregman, J. D. & Rank, D. M. Astrophys. J. Lett. 195, L125 (1975).
Russell, R. W., Soifer, B. T. & Willmer, S. P. NASA TMX-73, 190, 58 (1977).
Russell, R. W., Soifer, B. T. & Merrill, K. M. Astrophys. J. 213, 66 (1977).
Ridgway, S. T., Hall, D. N. B., Kleinmann, S. G., Weinberger, D. A. & Wojslaw, R. S. Nature 264, 345 (1976).
Salpeter, E. E. Astrophys. J. 193, 579 (1974).
Czyzak, S. J. & Santiago, J. J. Astrophys. Space Sci. 23, 443 (1973).
Nagy, B. Carbonaceous Meteorites (Elsevier, Amsterdam, 1975).
Woeller, F. & Ponnamperuma, C. Icarus 10, 386 (1969).
Khare, B. N. & Sagan, C. Icarus 20, 311 (1973).
Scattergood, T., Lesser, P. & Owen, T. Icarus 24, 465 (1975).
Herbig, G. H. Mem. Soc. Roy. Sci. Liége Ser. 5, 19, 13 (1970).
Knacke, R. F. Nature 217, 44 (1968).
Zaikowski, A. & Knacke, R. F. Astrophys. & Space Sci. 37, 3 (1975).
Gillett, F. C., Kleinmann, D. E., Wright, E. L. & Capps, R. W. Astrophys. J. Lett. 198, L65 (1975).
Meinschein, W. G., Nagy, B. & Henessy, D. J. Ann. N.Y. Acad. Sci. 108, 553 (1963).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
KNACKE, R. Carbonaceous compounds in interstellar dust. Nature 269, 132–134 (1977). https://doi.org/10.1038/269132a0
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1038/269132a0
- Springer Nature Limited
This article is cited by
-
Elucidating the polycyclic aromatic hydrocarbons involved in soot inception
Communications Chemistry (2023)
-
The mystery of unidentified infrared emission bands
Astrophysics and Space Science (2022)
-
Complex organics in space from Solar System to distant galaxies
The Astronomy and Astrophysics Review (2016)
-
Organic Compounds in Circumstellar and Interstellar Environments
Origins of Life and Evolution of Biospheres (2015)
-
Graphene etching on SiC grains as a path to interstellar polycyclic aromatic hydrocarbons formation
Nature Communications (2014)