SIMBAD references

2000ApJ...544..937W - Astrophys. J., 544, 937-943 (2000/December-1)

Stellar companions and the age of HD 141569 and its circumstellar disk.

WEINBERGER A.J., RICH R.M., BECKLIN E.E., ZUCKERMAN B. and MATTHEWS K.

Abstract (from CDS):

We investigate the stellar environment of the β Pictoris-like star HD 141569 with optical spectroscopy and near-infrared imaging. The B9.5 Ve primary and two other stars (types M2 and M4) both located in projection less than 9" away have the same radial velocity and proper motion and therefore almost certainly form a triple star system. From their X-ray flux, lithium absorption, and location on pre-main-sequence evolutionary tracks, the companions appear to be 5 Myr old. HD 141569A is now one of the few main-sequence stars with a circumstellar disk that has a well-determined age. The circumstellar disk is composed of secondary debris material, thus placing an upper limit on the time needed for disk processing. These three stars may be part of an association of young stars.

Abstract Copyright:

Journal keyword(s): Stars: Binaries: Visual - Stars: Circumstellar Matter - stars: individual (HD 141569) - Stars: Late-Type

Simbad objects: 19

goto Full paper

goto View the reference in ADS

To bookmark this query, right click on this link: simbad:2000ApJ...544..937W and select 'bookmark this link' or equivalent in the popup menu


2019.12.12-20:58:59

© Université de Strasbourg/CNRS

    • Contact