Detection of C60 and C70 in a Young Planetary Nebula

@article{Cami2010DetectionOC,
  title={Detection of C60 and C70 in a Young Planetary Nebula},
  author={Jan Cami and Jeronimo Bernard-Salas and Els Peeters and Sarah E. Malek},
  journal={Science},
  year={2010},
  volume={329},
  pages={1180 - 1182}
}
Cosmic Fullerenes Since the discovery of the buckminsterfullerene C60 in laboratory experiments, it has been speculated that fullerenes could form abundantly in carbon-rich evolved stars and, because of their stability, survive the harsh radiation field in the interstellar medium as a gas-phase species. Cami et al. (p. 1180; published online 22 July; see the Perspective by Ehrenfreund and Foing) have detected large amounts of fullerenes in a peculiar planetary nebula with an extremely hydrogen… 

Fullerenes and Cosmic Carbon

Hydrogen-poor conditions in a planetary nebula enable the detection of carbon-cage molecules C60 and C70, confirming the existence of fullerenes in space, and raising important questions about the formation and evolution of fulLErene compounds in circumstellar regions.

Detection of Cosmic Fullerenes in the Almahata Sitta Meteorite: Are They an Interstellar Heritage?

Buckminsterfullerene, C60, is the largest molecule observed to date in interstellar and circumstellar environments. The mechanism of formation of this molecule is actively debated. Despite targeted

Interstellar and Circumstellar Fullerenes

  • J. Cami
  • Physics
    Proceedings of the International Astronomical Union
  • 2018
Fullerenes are a particularly stable class of carbon molecules in the shape of a hollow sphere or ellipsoid that might be formed in the outflows of carbon stars. Once injected into the interstellar

ARE C60 MOLECULES DETECTABLE IN CIRCUMSTELLAR SHELLS OF R CORONAE BOREALIS STARS?

The hydrogen-poor, helium-rich, and carbon-rich character of the gas around R Coronae Borealis (RCB) stars has been suggested to be a site for formation of C60 molecules. This suggestion is not

Molecular Gas in the Circumstellar Environment of Unusual Evolved Stars

As lowand intermediate mass stars (M⋆ < 8−9 M⊙) age, they experience a series of evolutionary changes which culminate in the removal of nearly their entire envelope through extensive mass loss. The

Top-down formation of fullerenes in the interstellar medium.

This model predicts absolute abundances of C60 are up to several 10-4 of the elemental carbon, which is consistent with observational studies, and according to this model, once formed, C60 can survive much longer than other fullerenes in highly irradiated environments.

A SEARCH FOR NEAR INFRARED BANDS OF THE FULLERENE CATION C IN THE PROTOPLANETARY NEBULA IRAS 01005+7910

IRAS 01005+7910 is a carbon-rich protoplanetary nebula with a recently reported detection of mid-IR vibrational transitions of the fullerene C60 by Zhang and Kwok. We present new high spectral

Gas and Dust in Galactic Planetary Nebulae at Sub-Solar Metallicity

Planetary nebulae are the final phases of evolution for low- to intermediate-mass stars (∼ 0.8– 8 M⊙). They consist of a central star surrounded predominantly by a circumstellar envelope containing

FORMATION OF FULLERENES IN H-CONTAINING PLANETARY NEBULAE

Hydrogen depleted environments are considered an essential requirement for the formation of fullerenes. The recent detection of C60 and C70 fullerenes in what was interpreted as the hydrogen-poor

INFRARED STUDY OF FULLERENE PLANETARY NEBULAE

We present a study of 16 planetary nebulae (PNe) where fullerenes have been detected in their Spitzer Space Telescope spectra. This large sample of objects offers a unique opportunity to test
...

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