Search for fullerenes and PAHs in the diffuse interstellar medium

P. Ehrenfreund; B. H. Foing

doi:10.1016/0032-0633(95)00033-2

Search for fullerenes and PAHs in the diffuse interstellar medium

P. Ehrenfreund^*
, B. H. Foing

^*Corresponding author for this work

Leiden University
SSD

Research output: Contribution to journal › Article › peer-review

20 Citations (Scopus)

Abstract

Recent studies suggest carbon-containing molecules as the best candidates for carriers of the unidentified diffuse interstellar bands (DIBs). considering their abundance and ability to form stable bonds in interstellar space. We have searched for new DIBs in the near-IR and have detected two new diffuse bands that are consistent with laboratory measurements of C₆₀⁺ in a neon matrix. Criteria for this possible identification are discussed. From these observations and the DIB treasured absorption. we estimate that up to 0.9% of interstellar carbon could be in the form of C₆₀⁺ We also searched for poly cyclic aromatic hydrocarbon (PAH) canons and have derived corresponding limits for the presence of the coronene C₂₄H₁₂ and ovalene C₃₂H₁₄ cations in space. We have studied the ionization properties of these PAH cations, which could explain their selective destruction. From these results we discuss the role of fullerenes and PAHs as possible DIB carriers.

Original language	English
Pages (from-to)	1183-1187
Number of pages	5
Journal	Planetary and Space Science
Volume	43
Issue number	10-11
DOIs	https://doi.org/10.1016/0032-0633(95)00033-2
Publication status	Published - 1995
Externally published	Yes

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title = "Search for fullerenes and PAHs in the diffuse interstellar medium",

abstract = "Recent studies suggest carbon-containing molecules as the best candidates for carriers of the unidentified diffuse interstellar bands (DIBs). considering their abundance and ability to form stable bonds in interstellar space. We have searched for new DIBs in the near-IR and have detected two new diffuse bands that are consistent with laboratory measurements of C60+ in a neon matrix. Criteria for this possible identification are discussed. From these observations and the DIB treasured absorption. we estimate that up to 0.9\% of interstellar carbon could be in the form of C60+ We also searched for poly cyclic aromatic hydrocarbon (PAH) canons and have derived corresponding limits for the presence of the coronene C24H12 and ovalene C32H14 cations in space. We have studied the ionization properties of these PAH cations, which could explain their selective destruction. From these results we discuss the role of fullerenes and PAHs as possible DIB carriers.",

author = "P. Ehrenfreund and Foing, \{B. H.\}",

year = "1995",

doi = "10.1016/0032-0633(95)00033-2",

language = "English",

volume = "43",

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TY - JOUR

T1 - Search for fullerenes and PAHs in the diffuse interstellar medium

AU - Ehrenfreund, P.

AU - Foing, B. H.

PY - 1995

Y1 - 1995

N2 - Recent studies suggest carbon-containing molecules as the best candidates for carriers of the unidentified diffuse interstellar bands (DIBs). considering their abundance and ability to form stable bonds in interstellar space. We have searched for new DIBs in the near-IR and have detected two new diffuse bands that are consistent with laboratory measurements of C60+ in a neon matrix. Criteria for this possible identification are discussed. From these observations and the DIB treasured absorption. we estimate that up to 0.9% of interstellar carbon could be in the form of C60+ We also searched for poly cyclic aromatic hydrocarbon (PAH) canons and have derived corresponding limits for the presence of the coronene C24H12 and ovalene C32H14 cations in space. We have studied the ionization properties of these PAH cations, which could explain their selective destruction. From these results we discuss the role of fullerenes and PAHs as possible DIB carriers.

AB - Recent studies suggest carbon-containing molecules as the best candidates for carriers of the unidentified diffuse interstellar bands (DIBs). considering their abundance and ability to form stable bonds in interstellar space. We have searched for new DIBs in the near-IR and have detected two new diffuse bands that are consistent with laboratory measurements of C60+ in a neon matrix. Criteria for this possible identification are discussed. From these observations and the DIB treasured absorption. we estimate that up to 0.9% of interstellar carbon could be in the form of C60+ We also searched for poly cyclic aromatic hydrocarbon (PAH) canons and have derived corresponding limits for the presence of the coronene C24H12 and ovalene C32H14 cations in space. We have studied the ionization properties of these PAH cations, which could explain their selective destruction. From these results we discuss the role of fullerenes and PAHs as possible DIB carriers.

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U2 - 10.1016/0032-0633(95)00033-2

DO - 10.1016/0032-0633(95)00033-2

M3 - Article

AN - SCOPUS:0001546443

SN - 0032-0633

VL - 43

SP - 1183

EP - 1187

JO - Planetary and Space Science

JF - Planetary and Space Science

IS - 10-11

ER -

Search for fullerenes and PAHs in the diffuse interstellar medium

Abstract

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