THE UNIDENTIFIED INTERSTELLAR INFRARED BANDS - PAHS AS CARRIERS

被引：102

作者：

SCHLEMMER, S ^{[1
]}

COOK, DJ ^{[1
]}

HARRISON, JA ^{[1
]}

WURFEL, B ^{[1
]}

CHAPMAN, W ^{[1
]}

SAYKALLY, RJ ^{[1
]}

机构：

[1] UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720

来源：

SCIENCE | 1994年 / 265卷 / 5179期

关键词：

D O I：

10.1126/science.11539830

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Infrared emission spectra of gas-phase naphthalene and pyrene have been measured in the range of 3 to 7.5 micrometers with ultraviolet laser desorption-excitation and a spectroscopic technique featuring single-photon counting in the infrared. The spectra were compared with the unidentified infrared emission bands that are observed in many astronomical objects. Marked discrepancies between those observations and the laboratory emission spectra in the wavelengths and relative intensities of principal spectral features led to the conclusion that small neutral unsubstituted polycyclic aromatic hydrocarbons cannot be the carriers of the unidentified infrared emission bands.

引用

收藏

页码：1686 / 1689

页数：4

相关论文

共 38 条

[1]

AITKEN DK, 1981, MNRAS, V196, P39

[2] INTERSTELLAR POLYCYCLIC AROMATIC-HYDROCARBONS AND CARBON IN INTERPLANETARY DUST PARTICLES AND METEORITES [J].

ALLAMANDOLA, LJ ;

SANDFORD, SA ;

WOPENKA, B .

SCIENCE, 1987, 237 (4810) :56-59

[3] INTERSTELLAR POLYCYCLIC AROMATIC-HYDROCARBONS - THE INFRARED-EMISSION BANDS, THE EXCITATION EMISSION MECHANISM, AND THE ASTROPHYSICAL IMPLICATIONS [J].

ALLAMANDOLA, LJ ;

TIELENS, AGGM ;

BARKER, JR .

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 1989, 71 (04) :733-775

[4] POLYCYCLIC AROMATIC-HYDROCARBONS AND THE UNIDENTIFIED INFRARED-EMISSION BANDS - AUTO EXHAUST ALONG THE MILKY-WAY [J].

ALLAMANDOLA, LJ ;

TIELENS, AGGM ;

BARKER, JR .

ASTROPHYSICAL JOURNAL, 1985, 290 (01) :L25-L28

[5] THE DISCOVERY OF A NEW INFRARED-EMISSION FEATURE AT 1905 WAVENUMBERS (5.25 MICRONS) IN THE SPECTRUM OF BD +30-DEGREES-3639 AND ITS RELATION TO THE POLYCYCLIC AROMATIC HYDROCARBON MODEL [J].

ALLAMANDOLA, LJ ;

BREGMAN, JD ;

SANDFORD, SA ;

TIELENS, AGGM ;

WITTEBORN, FC ;

WOODEN, DH ;

RANK, D .

ASTROPHYSICAL JOURNAL, 1989, 345 (01) :L59-L62

[6] RADIATIVE RECOMBINATION IN THE ELECTRONIC GROUND-STATE [J].

BARKER, JR .

JOURNAL OF PHYSICAL CHEMISTRY, 1992, 96 (18) :7361-7367

[7] THE INFRARED-EMISSION BANDS .2. A SPATIAL AND SPECTRAL STUDY OF THE ORION BAR [J].

BREGMAN, JD ;

ALLAMANDOLA, LJ ;

TIELENS, AGGM ;

GEBALLE, TR ;

WITTEBORN, FC .

ASTROPHYSICAL JOURNAL, 1989, 344 (02) :791-798

[8] INFRARED-EMISSION SPECTRA OF BENZENE AND NAPHTHALENE - IMPLICATIONS FOR THE INTERSTELLAR POLYCYCLIC AROMATIC HYDROCARBON HYPOTHESIS [J].

BRENNER, JD ;

BARKER, JR .

ASTROPHYSICAL JOURNAL, 1992, 388 (01) :L39-L43

[9] ABLATION OF BENZENE FROM VANDERWAALS FILMS WITH EXCIMER LASER-PULSES AT 248-NM [J].

BUCK, M ;

HESS, P .

APPLIED SURFACE SCIENCE, 1989, 43 :358-362

[10] INFRARED-EMISSION FROM A POLYCYCLIC AROMATIC HYDROCARBON (PAH) EXCITED BY ULTRAVIOLET-LASER [J].

CHERCHNEFF, I ;

BARKER, JR .

ASTROPHYSICAL JOURNAL, 1989, 341 (01) :L21-L24

← 1 2 3 4 →