Facts and artifacts in interstellar diamond spectra

H. Mutschke, J. Dorschner, T. H. Henning, C. Jäger, U. Ott

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

Absorption spectra of presolar diamonds extracted from the Murchison meteorite have been measured in the extended wavelength range 0.2-500 μm in order to make available optical properties of this supposed component of interstellar carbon dust. In contrast to terrestrial natural and synthetic diamonds, spectra of the meteoritic diamonds show prominent bands in the middle-IR. In this Letter, experimental evidence is presented that the OH band at 3200 cm-1 and the CH bands in the 2800-3000 cm-1 range are not intrinsic features of the diamonds and that the band at 1100 cm-1 contains an artificial component due to the extraction procedure. In addition, in our spectra a conspicuous band at 120 cm-1 was found. If the intrinsic character of this band, which, up to now, is unidentified, is confirmed, it would offer a chance to observe interstellar diamonds, e.g., by the ISO satellite. We encourage laboratory astrophysicists and observers to study this promising possibility.

Original languageEnglish
JournalAstrophysical Journal
Volume454
Issue number2 PART 2
Publication statusPublished - Dec 1 1995

Fingerprint

diamond
artifact
artifacts
diamonds
meteoritic diamonds
Murchison meteorite
absorption spectrum
optical property
dust
wavelength
methylidyne
absorption spectra
carbon
optical properties
wavelengths

Keywords

  • Dust, extinction
  • Meteors, meteoroids
  • Methods: laboratory

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Space and Planetary Science

Cite this

Mutschke, H., Dorschner, J., Henning, T. H., Jäger, C., & Ott, U. (1995). Facts and artifacts in interstellar diamond spectra. Astrophysical Journal, 454(2 PART 2).

Facts and artifacts in interstellar diamond spectra. / Mutschke, H.; Dorschner, J.; Henning, T. H.; Jäger, C.; Ott, U.

In: Astrophysical Journal, Vol. 454, No. 2 PART 2, 01.12.1995.

Research output: Contribution to journalArticle

Mutschke, H, Dorschner, J, Henning, TH, Jäger, C & Ott, U 1995, 'Facts and artifacts in interstellar diamond spectra', Astrophysical Journal, vol. 454, no. 2 PART 2.
Mutschke H, Dorschner J, Henning TH, Jäger C, Ott U. Facts and artifacts in interstellar diamond spectra. Astrophysical Journal. 1995 Dec 1;454(2 PART 2).
Mutschke, H. ; Dorschner, J. ; Henning, T. H. ; Jäger, C. ; Ott, U. / Facts and artifacts in interstellar diamond spectra. In: Astrophysical Journal. 1995 ; Vol. 454, No. 2 PART 2.
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