Neon and Argon optical emission lines in ionized gaseous nebulae: Implications and applications

Astronomy and Astrophysics – Astrophysics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

12 pages, 12 figures, accepted for publication in Monthly Notices of the Royal Astronomical Society

Scientific paper

10.1111/j.1365-2966.2007.12213.x

In this work we present a study of the strong optical collisional emission lines of Ne and Ar in an heterogeneous sample of ionized gaseous nebulae for which it is possible to derive directly the electron temperature and hence the chemical abundances of neon and argon. We calculate using a grid of photoionization models new ionization correction factors for these two elements and we study the behaviour of Ne/O and Ar/O abundance ratios with metallicity. We find a constant value for Ne/O, while there seems to be some evidence for the existence of negative radial gradients of Ar/O over the disks of some nearby spirals. We study the relation between the intensities of the emission lines of [NeIII] at 3869 \AA and [OIII] at 4959 \AA and 5007 \AA. This relation can be used in empirical calibrations and diagnostic ratios extending their applicability to bluer wavelengths and therefore to samples of objects at higher redshifts. Finally, we propose a new diagnostic using [OII], [NeIII] and Hdelta emission lines to derive metallicities for galaxies at high z.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Neon and Argon optical emission lines in ionized gaseous nebulae: Implications and applications 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 Neon and Argon optical emission lines in ionized gaseous nebulae: Implications and applications, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Neon and Argon optical emission lines in ionized gaseous nebulae: Implications and applications will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-553588

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.