Fluorescent H2 in the reflection nebula NGC 2023 -: I.: Recent observations

被引：21

作者：

McCartney, MSK

Brand, PWJL

Burton, MG

Chrysostomou, A

机构：

[1] Univ Edinburgh, Inst Astron, Edinburgh EH9 3HJ, Midlothian, Scotland

[2] Univ New S Wales, Sch Phys, Sydney, NSW 2052, Australia

[3] Joint Astron Ctr, Hilo, HI 96720 USA

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 1999年 / 307卷 / 02期

关键词：

ISM : clouds; ISM : individual : NGC 2023; ISM : molecules; reflection nebulae; infrared : ISM : lines and bands;

D O I：

10.1046/j.1365-8711.1999.02602.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The spectrum of fluorescent molecular hydrogen in the photodissociation region (PDR) in NGC 2023 is presented, 87 H-2 lines have been measured from the bright H-2 emission ridge 80 arcsec south of the illuminating star (HD 37903), Infrared images of the PDR taken with 1-0 S(1) and 2.1-mu m continuum filters are presented. The infrared and far-red line fluxes provide column densities for 66 rovibrational states of the H-2 molecule from vibrational levels within the range upsilon = 1-12.

引用

页码：315 / 327

页数：13

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