Luminosities of Li-rich weak G-band giants

Details Luminosities of Li-rich weak G-band giants Luminosities of Li-rich weak G-band giants

Jun 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002sf2a.conf..555p&link_type=abstract

SF2A-2002: Semaine de l'Astrophysique Francaise, meeting held in Paris, France, June 24-29, 2002, Eds.: F. Combes and D. Barret,

Astronomy and Astrophysics

Astrophysics

1

Scientific paper

The weak G-band stars are G and K giants whose spectra show very weak or absent G-bands of the CH A2 Δ - X2 Π system at 4300Å. Several weak G-band giants show significant overabundance of Li reaching up to log Li = 3.0. Their position in the H-R diagram indicates that they are past the 1st dredge-up red giant branch. Episodic lithium production by extra-mixing may explain the overabundance of Li in weak G-band giants as for normal Li-rich giants. However, the weak G-band star HD165634 is known to have a white dwarf companion (Böhm-Vitense et al. 2000). If all the weak G-band stars are binaries with white dwarf companions, then the overabundance of Li may be related to the mass loss of the white dwarf progenitors.

Affiliated with

Also associated with

No associations

Rating

Luminosities of Li-rich weak G-band giants 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 Luminosities of Li-rich weak G-band giants, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Luminosities of Li-rich weak G-band giants will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1201306