High resolution spectroscopy of two young active late type stars within 20 parsecs of the Sun

Details High resolution spectroscopy of two young active late type stars within 20 parsecs of the Sun High resolution spectroscopy of two young active late type stars within 20 parsecs of the Sun

Mar 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009raa.....9..315w&link_type=abstract

Research in Astronomy and Astrophysics, Volume 9, Issue 3, pp. 315-322 (2009).

Astronomy and Astrophysics

Astrophysics

Scientific paper

We present high-resolution optical echell spectroscopy of HIP 544 and HIP 46843, two nearby solar like stars. The discovery of these young stars at such a close distance to the Sun is really a surprising phenomenon. It will help us to have a better understanding of the structure and evolutionary history of the Milky Way. The radial velocities (RV) of HIP 544 and HIP 46843 are measured to be -6.88±0.13km s-1 and 8.30±0.16km s-1, respectively, which are more accurate than before. The equivalent widths (EW) of the Li I 6707.8 Å absorption line of HIP 544 and HIP 46843 are measured to be 110±5mÅ and 195±5mÅ respectively. Based on these properties, HIP 544 is estimated to be 100-800 Myr old and HIP 46843 30-100 Myr old using three relatively creditable methods.

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