Astronomy and Astrophysics – Astrophysics
Scientific paper
2000-07-12
Astronomy and Astrophysics
Astrophysics
18 pages incl. 7 ps figures, aastex v5.0, accepted for publication in ApJ
Scientific paper
10.1086/317243
We investigate the stellar environment of the Beta Pictoris-like star HD 141569 with optical spectroscopy and near infrared imaging. The B9.5Ve primary, and an M2 and an M4 type star both located in projection less than nine arseconds 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 141569 A is now one of the few stars with a circumstellar disk that has a well-determined age. The circumstellar disk is composed of secondary debris material (Fisher et al. 2000), thus placing an upper limit on the time needed for disk processing. These three stars may be part of an association of young stars.
Becklin Eric E.
Matthews Keith
Rich Robert Michael
Weinberger Alycia J.
Zuckerman Ben
No associations
LandOfFree
Stellar Companions and the Age of HD 141569 and its Circumstellar Disk 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 Stellar Companions and the Age of HD 141569 and its Circumstellar Disk, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stellar Companions and the Age of HD 141569 and its Circumstellar Disk will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-415256