Pulsation in the pre-main-sequence Herbig Ae star HD 142666

Details Pulsation in the pre-main-sequence Herbig Ae star HD 142666 Pulsation in the pre-main-sequence Herbig Ae star HD 142666

Aug 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001mnras.325.1341k&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 325, Issue 4, pp. 1341-1345.

Astronomy and Astrophysics

Astronomy

16

Stars: Emission-Line, Be, Stars: Individual: Hd 142527, Stars: Individual: Hd 142666, Stars: Oscillations, Stars: Pre-Main-Sequence, Delta Scuti

Scientific paper

Asteroseismology of pre-main-sequence δ Scuti stars has the potential not only to provide unprecedented constraints on models of these stars, but also to allow for the possibility of detecting evolutionary period changes, thus providing a direct measure of the pre-main-sequence evolutionary time-scale. In the last two years, the published number of such stars known has doubled from four to eight. Searches are now being conducted amongst the Herbig Ae stars, which are considered to be excellent candidates. We announce the discovery of δ Scuti pulsation in one Herbig Ae star, HD 142666, which lies within Marconi & Palla's theoretically predicted instability strip for pre-main-sequence stars, making this the ninth known pre-main-sequence δ Scuti star. We also demonstrate a lack of δ Scuti pulsation in another such star, HD 142527.

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