LABORATORY ROTATIONAL SPECTRUM OF l-C3H+ AND CONFIRMATION OF ITS ASTRONOMICAL DETECTION

被引：87

作者：

Bruenken, Sandra ^{[1
]}

Kluge, Lars ^{[1
]}

Stoffels, Alexander ^{[1
,2
]}

Asvany, Oskar ^{[1
]}

Schlemmer, Stephan ^{[1
]}

机构：

[1] Univ Cologne, Inst Phys 1, D-50937 Cologne, Germany

[2] Radboud Univ Nijmegen, Inst Mol & Mat, NL-6525 AJ Nijmegen, Netherlands

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2014年 / 783卷 / 01期

关键词：

astrochemistry; ISM: abundances; ISM: molecules; line: identification; methods: laboratory: molecular; techniques: spectroscopic; VIBRATIONAL FREQUENCIES; SPECTROSCOPIC CONSTANTS; INTERSTELLAR; CHEMISTRY; ANIONS; C4H; SEARCH; CLOUDS; GAS;

D O I：

10.1088/2041-8205/783/1/L4

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The rotational spectrum of l-C3H+ has been measured in the millimeter-wave band in a 4 K cryogenic ion trap apparatus employing a novel mass-selective action spectroscopy method based on light induced reactions (LIR). Line positions of four rotational transitions (J = 1-2 up to J = 4-5) were observed with a relative precision of 3x10(-7). The experimental transition frequencies and derived spectroscopic constants agree with those from recent astronomical observations, and unambiguously confirm the detection of this astrochemically relevant carbocation in the Horsehead photodissociation region and toward Sgr B2(N).

引用

页数：4

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