Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995aas...187.8105h&link_type=abstract
American Astronomical Society, 187th AAS Meeting, #81.05; Bulletin of the American Astronomical Society, Vol. 27, p.1403
Astronomy and Astrophysics
Astronomy
Scientific paper
Using published spectral line data for nine Halo Planetary Nebulae, we have calculated photoionization models using the theoretical code CLOUDY (Ferland 1990) in an attempt to gain insight into the physical conditions and chemical abundances of these nebulae. The nebulae are classified as halo objects from their galactic plane height, their kinematical characteristics as compared to disk objects, and/or their distinctively low metallicity relative to disk planetary nebulae. The nine HPNe reported in this paper are K648, DdDm-1, NGC2242, NGC4361, Pn242-37.1, Pn6-41.1, M2-29, BB-1, & H4-1. The derived abundance ranges in this work for the HPNe are: C 7.23-8.95, N 6.63-8.00, O 7.56-8.62, Ne 6.24-7.71, Ar 4.12-7.00, and S 4.89-6.90 (In log(x)+12). The temperatures for the central stars were derived by assuming the star to be a blackbody radiator and by using four previously published stellar atmospheric models. The temperature range for the central stars of these nebulae spans 40,000K to 185,000K.
Henry Richard B. C.
Howard Joseph W.
McCartney Scott
No associations
LandOfFree
A Detailed Abundance Analysis of Nine Halo Planetary 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 A Detailed Abundance Analysis of Nine Halo Planetary Nebulae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Detailed Abundance Analysis of Nine Halo Planetary Nebulae will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1255922