IUE OBSERVATIONS OF THE HALO PLANETARY-NEBULA BB-1 - THE C, O AND NE ABUNDANCES

Authors
PENA M TORRESPEIMBERT S PEIMBERT M DUFOUR RJ
Citation
M. Pena et al., IUE OBSERVATIONS OF THE HALO PLANETARY-NEBULA BB-1 - THE C, O AND NE ABUNDANCES, Revista Mexicana de Astronomia y Astrofisica, 27, 1993, pp. 175-179
Citations number
27
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Revista Mexicana de Astronomia y Astrofisica → ACNP
ISSN journal
01851101
Volume
27
Year of publication
1993
Pages
175 - 179
Database
ISI
SICI code
0185-1101(1993)27:<175:IOOTHP>2.0.ZU;2-D
Abstract
We present new high and low dispersion IUE observations of the halo pl anetary nebula BB-1 (PN G108.4 -76.1). We have determined the C/H valu e to be 5.1 x 10(-4). This object is among the PNe with the highest C/ O and Ne/O ratios; its Ne/O ratio is 10 times higher than solar. The e xtreme enrichment of C and Ne imposes strong constraints on stellar ev olution models of low-mass stars.