Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991pasp..103..865p&link_type=abstract
(Rice University and University of Texas, Texas-Mexico Conference on Astrophysics: Plasmas in Astrophysics, 3rd, Rice University
Astronomy and Astrophysics
Astrophysics
24
Astronomical Photometry, Halos, Iue, Planetary Nebulae, Spectrophotometry, Stellar Evolution, Chemical Composition, Chemical Evolution, Stellar Mass
Scientific paper
Spectrophotometric data for the two planetary nebulae are given and compared to the data for a well-understood type of planetary nebula (PN) for classification and measurements of abundances. M 2-29 and BB-1 were observed in the wavelength ranges of 3500-5000 and 6000-7500, and the visual calibrated spectra and emission-line fluxes are given along with previous UV data. A reddening correction is applied, and the physical conditions, ionic abundances, and total abundances are presented. Of particular note are the M-2-29 O/H ratio (determined to be the lowest of the planetary nebulae), the high concentrations of C, N, and Ne in BB-1, and the low abundances of Ar and S in BB-1. M 2-29 is theorized to belong to the Type-IV PN group which contains high abundances of Ar and S, and progenitor stars are concluded to be responsible for O and Ne excesses in planetary nebulae.
Peña Manuel
Ruiz María Teresa
Torres-Peimbert Silvia
No associations
LandOfFree
The halo planetary nebulae M 2-29 and BB-1 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 halo planetary nebulae M 2-29 and BB-1, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The halo planetary nebulae M 2-29 and BB-1 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1306796