Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982esasp.176..117b&link_type=abstract
In ESA 3rd European IUE Conf. p 117-121 (SEE N83-11889 02-88)
Astronomy and Astrophysics
Astronomy
2
Emission Spectra, Line Spectra, Main Sequence Stars, Resonance Lines, Ultraviolet Astronomy, Chromosphere, F Stars, Iue, Solar Activity, Stellar Luminosity, Stellar Temperature, Supergiant Stars, Temperature Gradients
Scientific paper
Observations of ultraviolet emission line spectra obtained with the IUE in the region 1200 to 2000 A are reported. Low resolution spectra for a representative sample of main sequence stars in the spectral range A5 to K5 and the supergiant alpha Agr are considered. High excitation temperature lines are detected in stars later than A7 and absolute fluxes are determined. The detection of stellar chromospheres and transition region features in stars earlier than FO is discussed. The C IV emission flux decreases with the effective temperature of main sequence; low emission quiet stars are distinguished. Other transition region emission lines show comparable fluxes to the C IV with no particular trend against the formation temperature. Flux ratios to the quiet Sun in all F stars show an increasing trend with the excitation temperature and show a minimum near the C IV line formation temperature, as the active Sun to quiet ratio does.
Blanco Cristina
Bruca Loredana
Catalano Santo
Marilli Ettore
No associations
LandOfFree
Ultraviolet resonance line emissions observed with IUE does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Ultraviolet resonance line emissions observed with IUE, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ultraviolet resonance line emissions observed with IUE will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1353259