Article (Scientific journals)
Morphology of the Venus ultraviolet night airglow
Stewart, A. I. F.; Gérard, Jean-Claude; Rusch, D. W. et al.
1980In Journal of Geophysical Research, 85, p. 7861-7870
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Keywords :
NIGHTGLOW; VENUS; ULTRAVIOLET ASTRONOMY; VENUS ATMOSPHERE; BRIGHTNESS; PIONEER VENUS 1 SPACECRAFT; SATELLITE-BORNE PHOTOGRAPHY; MORPHOLOGY; ULTRAVIOLET; AIRGLOW; NIGHTSIDE; NITRIC OXIDE; MODELS; PVO MISSION; OUVS INSTRUMENT; SPACECRAFT OBSERVATIONS; EMISSION; DIAGRAMS; VERTICAL TRANSPORT; CALCULATIONS; ONMS INSTRUMENT
Abstract :
[en] Images of the nightside of Venus in the (0,1)delta band of nitric oxide have been obtained by the Pioneer Venus orbiter ultraviolet spectrometer (OUVS). The emission, which is produced by radiative association of N and O, shows a bright spot reaching 5 kR and located at 2 a.m. local solar time just south of the equator. The emitting layer is at 111 + or - 7-km altitude. A one dimensional vertical transport model shows that the hemispheric average brightness of 0.8 kR is consistent with the orbiter neutral mass spectrometer (ONMS) measurements of N and O near 167 km, and that the altitude of the emitting layer is consistent with the eddy mixing model proposed to explain the dayside helium profile measured by the bus neutral mass spectrometer. In the model, N reaches a peak of 7 x 10 to the 8th per cu cm at 114 km, and O reaches a peak of 2.6 x 10 to the 11th per cu cm at 106 km. There is a fair degree of consistency between the ONMS, OUVS, and other airglow measurements, except as regards the local time dependence.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Stewart, A. I. F.;  Colorado, University, Boulder, Colo.
Gérard, Jean-Claude  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP)
Rusch, D. W.;  Colorado, University, Boulder, Colo.
Bougher, Stephen W.
Language :
English
Title :
Morphology of the Venus ultraviolet night airglow
Publication date :
01 December 1980
Journal title :
Journal of Geophysical Research
ISSN :
0148-0227
eISSN :
2156-2202
Publisher :
American Geophysical Union (AGU), Washington DC, United States
Volume :
85
Pages :
7861-7870
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 31 October 2009

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