In: Contributions of the Astronomical Observatory Skalnaté Pleso, vol. 38, no. 2
I. Kamp - J.r. Martínez-Galarza - E. Paunzen - K.y.l. Su - A. Gáspár - G.h. Rieke
Details:
Year, pages: 2008, 147 - 156
Keywords:
stars: abundances, stars: chemically peculiar, circumstellar matter, reflection nebulae
Original source URL: http://www.astro.sk/caosp/Eedition/Abstracts/2008/Vol_38/No_2/pp147-156_abstract.html
About article:
The group of λ Bootis type stars comprises late B- to early F-type,
Population I objects which are basically metal weak, in particular the Fe
group elements, but with the clear exception of C, N, O and S. We present
a spectroscopical definition for the group membership by using the light
element versus metal abundance pattern. One of the current explanations for
the λ Bootis peculiarity is the accretion of interstellar material
as the star travels through a diffuse interstellar cloud. We will review
this hypothesis in the context of ESO high resolution spectra and Spitzer
imaging and photometry. The Na I D lines provide simultaneously
stellar abundances and physical properties of interstellar material along
the line of sight. The new Spitzer results shed light on the presence of
dust around these stars, its composition and geometric distribution.
How to cite:
ISO 690:
Kamp, I., Martínez-Galarza, J., Paunzen, E., Su, K., Gáspár, A., Rieke, G. 2008. λ Bootis stars: Current status and new insights from Spitzer. In Contributions of the Astronomical Observatory Skalnaté Pleso, vol. 38, no.2, pp. 147-156. 1335-1842.
APA:
Kamp, I., Martínez-Galarza, J., Paunzen, E., Su, K., Gáspár, A., Rieke, G. (2008). λ Bootis stars: Current status and new insights from Spitzer. Contributions of the Astronomical Observatory Skalnaté Pleso, 38(2), 147-156. 1335-1842.