Integrated Absorption- and Emission-Line Analysis of Nebulae

Details Integrated Absorption- and Emission-Line Analysis of Nebulae Integrated Absorption- and Emission-Line Analysis of Nebulae

Jul 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003hst..prop.9736w&link_type=abstract

HST Proposal ID #9736

Physics

Hst Proposal Id #9736 Ism And Circumstellar Matter

Scientific paper

Serious discrepancies have arisen in CNONe abundance determinations for galactic nebulae in the past ten years depending upon which type of emission lines are used in the analysis: forbidden vs. permitted lines. The cause of the discrepancies, which can exceed an order of magnitude for some PNe, has been studied intensively but is still unknown. Emission line abundances cannot be considered reliable until the nature of these contradictory results is understood. We have developed a technique for integrating absorption lines into emission analyses for diffuse nebulae that provides an independent check on the validity of emission-line analyses. It requires high resolution observations of UV resonance absorption produced by the nebular gas in imbedded or background stars together with optical spectra of the nebulae. We propose to obtain UV spectra of four PNe central stars with STIS that will provide data necessary to exploit the new technique of integrated abundance determination that combines both emission and absorption lines.

Affiliated with

Also associated with

No associations

Rating

Integrated Absorption- and Emission-Line Analysis of Nebulae 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 Integrated Absorption- and Emission-Line Analysis of Nebulae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Integrated Absorption- and Emission-Line Analysis of Nebulae will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1732993