Fluorescent H-2 in the reflection nebula NGC 2023 - I. Recent observations

Authors
McCartney, MSK Brand, PWJL Burton, MG Chrysostomou, A
Citation
Msk. Mccartney et al., Fluorescent H-2 in the reflection nebula NGC 2023 - I. Recent observations, M NOT R AST, 307(2), 1999, pp. 315-327
Citations number
38
Categorie Soggetti
Space Sciences
Journal title
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN journal
00358711 → ACNP
Volume
307
Issue
2
Year of publication
1999
Pages
315 - 327
Database
ISI
SICI code
0035-8711(19990801)307:2<315:FHITRN>2.0.ZU;2-6
Abstract
The spectrum of fluorescent molecular hydrogen in the photodissociation reg ion (PDR) in NGC 2023 is presented, 87 H-2 lines have been measured from th e bright H-2 emission ridge 80 arcsec south of the illuminating star (HD 37 903), 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.