The IUE Spectrum of the Planetary Nebula NGC 6905

Details The IUE Spectrum of the Planetary Nebula NGC 6905 The IUE Spectrum of the Planetary Nebula NGC 6905

Nov 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996apj...472..294f&link_type=abstract

Astrophysical Journal v.472, p.294

Astronomy and Astrophysics

Astronomy

8

Ism: Planetary Nebulae: Individual Ngc Number: Ngc 6905, Ultraviolet: Ism

Scientific paper

We present results from new lUE high-dispersion and archival low-dispersion spectra of NGC 6905. Ultraviolet emission lines of O VIII and possibly O VII are detected for the first time in NGC 6905. High-excitation lines of C IV, C V, O VI, [Mg V], [Ne III], [Ne IV], [Ne V], [Ar IV], and [Ar V] are also observed. Electron densities and terminal wind velocities are presented. Terminal wind velocities from O V and C IV lines are discussed. Variability (up to ≍25%) of the complex split He II λ1640 emission may be intrinsic or a function of position angle of the lUE camera entrance aperture. After reextracting the low-dispersion data, no significant changes between 1981 and 1991 were found for the strong O V λ1371, C IV λ1549, He II λ1640, and C III] λ1909 emissions. Many weak features not detected before have been identified in the archival low-resolution data. Some comparisons are made with UV spectra of Sand 3 and KPD 0005+6501. Preliminary results indicate 0 VIII emissions in lUE spectra of NGC 2371-2, NGC 2867, NGC 5189, and NGC 5315, suggesting that these planetary nebulae, together with NGC 6905, RX J21 17+3412, and Sand 3, form a new "O VIII sequence." The present work illustrates the need to reexamine older IUE spectra and demonstrates that today's improved data analysis is capable of improving greatly the results reported in earlier publications.

Affiliated with

Also associated with

No associations

Rating

The IUE Spectrum of the Planetary Nebula NGC 6905 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 IUE Spectrum of the Planetary Nebula NGC 6905, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The IUE Spectrum of the Planetary Nebula NGC 6905 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1146535