Lambda Boötis star

A Lambda Boötis star is a type of peculiar star which has an unusually low abundance of iron peak elements in its surface layers. One possible explanation for this is that it is the result of accretion of metal-poor gas from a circumstellar disc. The prototype is Lambda Boötis.

References

• Paunzen, Ernst (2004). "The λ Bootis stars". In Zverko, J.; Ziznovsky, J.; Adelman, S.J.; Weiss, W.W. (ed.). The A-Star Puzzle. IAU Symposium, No. 224. ISBN 0521850185. Retrieved 2008-11-16. {{cite conference}}: Unknown parameter |booktitle= ignored (|book-title= suggested) (help)CS1 maint: multiple names: editors list (link)
• Gray, R.O. and Corbally, C.J. (2002). "A Spectroscopic Search for λ Bootis and Other Peculiar A-Type Stars in Intermediate-Age Open Clusters". The Astronomical Journal. 124 (2): 989–1000. Bibcode:2002AJ....124..989G. doi:10.1086/341609.{{cite journal}}: CS1 maint: multiple names: authors list (link)