A Li-rich post-AGB star HD 172481

dc.contributor.author	Giridhar, S
dc.contributor.author	Arellano Ferro, A
dc.contributor.author	Mathias, P
dc.date.accessioned	2008-05-07T09:30:54Z
dc.date.available	2008-05-07T09:30:54Z
dc.date.issued	2001
dc.identifier.citation	BASI, Vol. 29, No. 3, pp. 289 - 293	en
dc.identifier.uri	http://hdl.handle.net/2248/2267
dc.description.abstract	Our abundance analysis of this post-AGB candidate star confirms that the HD 172481 is indeed a post-AGB star. It belongs to an important, but relatively rare class of post-AGB stars showing Li I features in their spectra. The strength of OI triplet at 7774 Å confirms its high luminosity (log, (L/L?) ~ 4). It is moderately metal-poor with [Fe/H] of - 0.6 but shows significant enrichment of s-process elements indicating that the star has gone through the third dredge-up. We find C/O of ~ 0.4 for this star. Hot Bottom Burning scenario can explain the production of Li as well as the destruction of carbon via CN cycle that could prevent C/O ratio from exceeding one.	en
dc.format.extent	361423 bytes
dc.format.mimetype	application/pdf
dc.language.iso	en	en
dc.publisher	Astronomical Society of India	en
dc.relation.uri	http://adsabs.harvard.edu/abs/2001BASI...29..289G	en
dc.subject	Li-rich	en
dc.subject	AGB star	en
dc.subject	HD 172481	en
dc.title	A Li-rich post-AGB star HD 172481	en
dc.type	Article	en