Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....85..359s&link_type=abstract
Astronomy and Astrophysics, vol. 85, no. 3, May 1980, p. 359-361.
Astronomy and Astrophysics
Astrophysics
30
Abundance, H Ii Regions, Nebulae, Spiral Galaxies, High Resolution, Oxygen Ions, Spectral Resolution, Temperature Gradients
Scientific paper
Reasons for large uncertainties in the determination of abundances from the global optical spectra of metal-rich H II regions are examined. Generally, no temperature sensitive line ratio is available in such objects; the effects of temperature gradients inside nebulae may be very severe and it is difficult to correct for temperature gradients on the basis of the available observational data. Finally, even a detailed modeling of a given object leads to uncertain abundances when no direct estimate of an electronic temperature is available, because too little is known of the nebular geometry and exciting conditions. It is suggested that the high abundances suspected for H II regions in inner parts of spiral galaxies could be ascertained, at least in favorable cases, by high-resolution spectral observations.
No associations
LandOfFree
The interest of high spatial resolution observations of presumed metal-rich H II regions 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 The interest of high spatial resolution observations of presumed metal-rich H II regions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The interest of high spatial resolution observations of presumed metal-rich H II regions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1358664