Age of the Gliese 569 Multiple System

Details Age of the Gliese 569 Multiple System Age of the Gliese 569 Multiple System

Publishing date

Jul 2007

URL

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...21012308r&link_type=abstract

Journals

American Astronomical Society Meeting 210, #123.08; Bulletin of the American Astronomical Society, Vol. 39, p.332

Science

Other

Type

Scientific paper

Abstract

This work includes a re-examination the coeval, multiple dwarf system Gliese 569 in order to resolve the contradictory findings in the area of age. Absolute magnitudes in the H and K bands are calculated, and are analyzed along with newly obtained dynamic mass estimates for the B components as well as other attributes of this system that have been well established in the literature. Ages are inferred by the placement of these objects on a variety of HR diagrams using the evolutionary models of Baraffe et al.
The results strengthen the case for a possible third member of the Bab component of Gliese 569. The system's age is probably in the range of 100 to 500 million years; however, a more specific age estimate cannot yet be concluded. Because of the uncertainty associated with the dynamical mass estimates for the B component, the error bars associated with the age estimates are considerable. Finally, future research is suggested to better understand this hierarchical multiple system.

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