PHOTO-DISSOCIATION OF HEH2+ AND FLUX DEFICIENCY OF STELLAR SPECTRA

被引：3

作者：

DATTA, KK

SAHA, S

BARUA, AK

机构：

[1] Department of General Physics and X-rays, Indian Association for the Cultivation of Science

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 1979年 / 12卷 / 21期

关键词：

D O I：

10.1088/0022-3700/12/21/012

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Accurate quantal values of photodissociation cross sections have been calculated for HeH2+ for the transition 2p sigma to 3d sigma over the accessible range of lambda lambda 800-5800 AA and an attempt has been made to explain whether this is the source of the well known ultraviolet flux deficiency observed by Stecher and Milligan (1962) in a number of early type stars. The cross sections were calculated for all the vibrational levels of the 2p sigma state for which the Boltzmann distribution has been assumed and for the two most probable rotational-level values at stellar temperatures of 20000K and 28000K. It has been concluded that HeH2+ cannot be the source of such stellar opacity.

引用

页码：3553 / 3561

页数：9

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