No full text
Article (Scientific journals)
Hubble Space Telescope Goddard high-resolution spectrograph H2 rotational spectra of Jupiter's aurora
Clarke, John T; Ben Jaffel, Lotfi; Vidal-Madjar, Alfred et al.
1994In Astrophysical Journal, 430, p. 73-L76
Peer Reviewed verified by ORBi
 

Files


Full Text
No document available.

Send to



Details



Keywords :
AURORAL SPECTROSCOPY; AURORAL ZONES; HYDROGEN; JUPITER ATMOSPHERE; ROTATIONAL SPECTRA; TEMPERATURE MEASUREMENT; GAS TEMPERATURE; SPECTRAL LINE WIDTH; SPECTRUM ANALYSIS; TEMPERATURE DISTRIBUTION
Abstract :
[en] We have observed the emission spectrum from Jupiter's north auroral atmosphere with 0.57 A spectral resolution over 1204-1241 A. Bright emissions have been detected from 50 deg to 60 deg latitude at locations consistent with 6 to 30 R [SUB]J[/SUB] auroral ovals, with much fainter emissions away form the auroral ovals. The emission spectrum is well fitted by both laboratory spectra and theoretical models of optically thin electron excited H2, with added Doppler-broadened Lyman Alpha emission. The observed Lyman Alpha emission wings extend more than 1 A from line center and appear correlated in strength with the H2 brightness. Individual rotational lines in the H2 Werner band system are resolved, allowing a determination of the H2 rotational temperature at the altitude of the emission. We derive best-fit temperatures from 400-450 to 700-750 K, with the auroral emission layer temperature changing either across the auroral oval or over several days' time. These observations demonstrate for the first time the ability to measure the observed rapid H2 temperature variations across Jupiter's auroral atmosphere.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Clarke, John T;  Univ. of Michigan, Ann Arbor, MI, US
Ben Jaffel, Lotfi;  Univ. of Michigan, Ann Arbor, MI, US
Vidal-Madjar, Alfred;  Institut d'Astrophysique de Paris, Paris, France
Gladstone, G Randall;  Institut d'Astrophysique de Paris, Paris, France
Waite, J Hunter, Jr;  Southwest Research Institute, San Antonio, TX, US
Prange, Renee;  Southwest Research Institute, San Antonio, TX, US
Gérard, Jean-Claude  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP)
Ajello, Joe;  Universite de Liego, Liege, Belgium
James, Geoffrey;  Jet Propulsion Lab, Pasedena, CA, US
Language :
English
Title :
Hubble Space Telescope Goddard high-resolution spectrograph H2 rotational spectra of Jupiter's aurora
Publication date :
01 July 1994
Journal title :
Astrophysical Journal
ISSN :
0004-637X
eISSN :
1538-4357
Publisher :
University of Chicago Press, Chicago, United States - Illinois
Volume :
430
Pages :
L73-L76
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 31 October 2009

Statistics


Number of views
59 (2 by ULiège)
Number of downloads
0 (0 by ULiège)

Scopus citations®
 
42
Scopus citations®
without self-citations
21
OpenCitations
 
36

Bibliography


Similar publications



Contact ORBi