An Astronomical 2175 Å Feature in Interplanetary Dust Particles

@article{Bradley2005AnA2,
  title={An Astronomical 2175 Å Feature in Interplanetary Dust Particles},
  author={John P. Bradley and Zu Rong Dai and Rolf Erni and Nigel D. Browning and Giles A. Graham and Peter K. Weber and J B Smith and Ian Douglass Hutcheon and Hope A. Ishii and Sa{\vs}a Bajt and Christine Floss and Frank J. Stadermann and Scott A. Sandford},
  journal={Science},
  year={2005},
  volume={307},
  pages={244 - 247}
}
The 2175 angstrom extinction feature is the strongest (visible-ultraviolet) spectral signature of dust in the interstellar medium. Forty years after its discovery, the origin of the feature and the nature of the carrier(s) remain controversial. Using a transmission electron microscope, we detected a 5.7–electron volt (2175 angstrom) feature in interstellar grains embedded within interplanetary dust particles (IDPs). The carriers are organic carbon and amorphous silicates that are abundant in… 
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References

SHOWING 1-10 OF 70 REFERENCES
INTERSTELLAR DUST GRAINS
▪ Abstract This review surveys the observed properties of interstellar dust grains: the wavelength-dependent extinction of starlight, including absorption features, from UV to infrared; optical
Samples of Stars Beyond the Solar System: Silicate Grains in Interplanetary Dust
TLDR
Six circumstellar silicate grains within interplanetary dust particles (IDPs) are identified, and one of the grains is forsterite, and two are amorphous silicate “GEMS” (glass with embedded metal and sulfides), which is consistent with astronomical identifications of crystalline and amorphously silicates in the outflows of evolved stars.
Astrophysics of Dust
Currently ∼36 different absorption bands have been detected in the infrared spectra of cold, dense interstellar and circumstellar environments. These are attributed to the vibrational transitions of
Chemically Anomalous, Preaccretionally Irradiated Grains in Interplanetary Dust from Comets
TLDR
The measured compositional trends suggest that chemical (as well as isotopic) anomalies can be used to identify presolar interstellar components in primitive meteoritic materials.
Identification of molecular-cloud material in interplanetary dust particles
TLDR
It is shown that H and N isotopic anomalies among fragile ‘cluster’ IDPs are far larger, more common, and less equilibrated than those previously observed in other IDPs or meteorites, suggesting that molecular-cloud material has survived intact.
Carbon and Nitrogen Isotopic Anomalies in an Anhydrous Interplanetary Dust Particle
TLDR
The presence of a 13C depletion associated with a 15N enrichment in an anhydrous interplanetary dust particle is reported and it is suggested that the anomalies are carried by heteroatomic organic compounds.
The inventory of interstellar materials available for the formation of the solar system.
  • S. Sandford
  • Physics, Geology
    Meteoritics & planetary science
  • 1996
TLDR
This paper attempts to review some of the current knowledge of the more abundant materials thought to exist in the ISM and focuses largely on solid materials as opposed to gases since solids contain a major fraction of the heavier elements in clouds and because solids are most likely to survive incorporation into new planetary systems in identifiable form.
An analysis of the shapes of ultraviolet extinction curves. I - The 2175 A bump
IUE data are used to investigate the properties of the 2175 A interstellar extinction bump toward 45 reddened Milky Way stars. Using analytic fitting functions, parameters are derived which describe
217. 5 nanometer absorption feature in the spectrum of small silicate particles
Laboratory spectra of fine partially hydrogenated amorphous Mg/sub 2/SiO/sub 4/ particles have been shown to exhibit an absorption feature at 217.5 nm that matches the interstellar extinction band at
...
1
2
3
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