Far-ultraviolet emission lines in U Cephei - Evidence for a hot, turbulent circumstellar envelope

1983 ◽  
Vol 275 ◽  
pp. 251 ◽  
Author(s):  
M. J. Plavec
Keyword(s):  
Emission Lines ◽  
Circumstellar Envelope ◽  
Ultraviolet Emission ◽  
Far Ultraviolet

A Search for Far-Ultraviolet Emission Lines from Diffuse Hot Gas in the Halo of NGC 4631

1995 ◽  
Vol 454 (1) ◽  
Author(s):  
Henry C. Ferguson ◽  
W. Van Dyke Dixon ◽  
Arthur F. Davidsen ◽  
Ralf-Juergen Dettmar
Keyword(s):  
Emission Lines ◽  
Ultraviolet Emission ◽  
Hot Gas ◽  
Far Ultraviolet

Observations of T Tauri Stars usingHubble Space TelescopeGHRS. I. Far‐Ultraviolet Emission Lines

2002 ◽  
Vol 566 (2) ◽  
pp. 1100-1123 ◽  
Author(s):  
David R. Ardila ◽  
Gibor Basri ◽  
Frederick M. Walter ◽  
Jeff A. Valenti ◽  
Christopher M. Johns‐Krull
Keyword(s):  
T Tauri Stars ◽  
Emission Lines ◽  
Ultraviolet Emission ◽  
T Tauri ◽  
Far Ultraviolet

High-resolution far ultraviolet emission spectra of electron-excited molecular deuterium

1999 ◽  
Vol 32 (15) ◽  
pp. 3813-3838 ◽  
Author(s):  
H Abgrall ◽  
E Roueff ◽  
Xianming Liu ◽  
D E Shemansky ◽  
G K James
Keyword(s):  
High Resolution ◽  
Emission Spectra ◽  
Ultraviolet Emission ◽  
Far Ultraviolet

Solar abundance determination from ultraviolet emission lines

Solar Physics ◽  
1967 ◽  
Vol 1 (2) ◽  
pp. 229-241 ◽  
Author(s):  
Andrea K. Dupree ◽  
Leo Goldberg
Keyword(s):  
Emission Lines ◽  
Solar Abundance ◽  
Ultraviolet Emission ◽  
Abundance Determination

scholarly journals Interpretation of the Ultraviolet Spectrum of NGC 7662

1978 ◽  
Vol 76 ◽  
pp. 121-122
Author(s):  
R.C. Bohlin ◽  
J.P. Harrington ◽  
T.P. Stecher
Keyword(s):  
Neutral Hydrogen ◽  
Central Star ◽  
Dielectronic Recombination ◽  
Emission Lines ◽  
Ultraviolet Emission ◽  
Two Photon ◽  
Carbon Abundance ◽  
Photon Process ◽  
Ngc 7662

The ultraviolet emission lines that were me asured in the spectrum obtained from our rocket observation of NGC 7662 have been compared with those predicted by a set of models. The models allow a determination of the carbon abundance which is found to be solar and the C/0 ratio which is equal to unity. In order to obtain a good fit, dielectronic recombination and charge exchange between neutral hydrogen and C IV were included, both of which increase the concentration of C III. The observed continuum consists of light from the central star and from the nebula, which contributed primarily via the two photon process in the H° and the Balmer continuum.

scholarly journals Ultraviolet emission line imaging of planetary nebulae with GALEX

2011 ◽  
Vol 7 (S283) ◽  
pp. 308-309 ◽  
Author(s):  
Luciana Bianchi ◽  
Arturo Manchado ◽  
Karl Forster
Keyword(s):  
Galaxy Evolution ◽  
Broad Band ◽  
Planetary Nebulae ◽  
Emission Lines ◽  
Continuum Emission ◽  
Ultraviolet Emission ◽  
The Galaxy ◽  
Optical Domain ◽  
Line Imaging ◽  
Shock Fronts

AbstractGALEX (the Galaxy Evolution Explorer) has provided far-UV(1344-1786Å) and near-UV(1771-2831Å) imaging of several Planetary Nebulae (e.g., Bianchi et al. 2008, Bianchi 2012), with flux limits ~27.5 mag/sq.arcsec for objects in the Medium-deph Imaging Survey (MIS). PNe images in the GALEX broad-band UV filters include flux from both nebular line and continuum emission. We use the GALEX grism observing mode to obtain slitless spectral imaging of a sample of PNe with diameters >1′, in the near-UV. We show the first data from this program. The grism produces 2D images of the prominent UV nebular emission lines, when such lines dominate the flux. Combined with monochromatic images of diagnostic lines in the optical domain, such data help detect and interpret ionization and shock fronts, especially in faint nebular regions.

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