36 and 70 Ophiuchi's Ages

[edasich]

HellO!

It seems naif to ask this, but I tried to search a reference about 70 an 36 Ophiuchi star systems' ages and I found nothing except a vague reference of a very youn age (500 Million years, 0.5 Gigayears).
If anyone knew something about the age of both star systems, please reply this topic.

I need it for my SciFi comics and artistic rendering of mine

Thanks

[ajtribick]

According to Desidera et al. (2006) "Spectroscopic characterization of a sample of southern visual binaries", 36 Oph is somewhere around 1.1 billion years old.

Can't find a reference for 70 Ophiuchi though. Maybe it hasn't been determined.

[edasich]

Thanks, I was sure 36 Oph were quite young, so praebiotic Eogaian worlds are alright for it.
About 70 Oph, a vague reference reported and age of 0.5 Gigayears

Thanks again, Lazarus (is it you?)

[ajtribick]

In fact,this new paper on a new technique for determining the ages of stars, termed gyrochronology, gives an estimate of 590 million years for 36 Oph.

EDITED since the first time round I accidentally put in the Xi Bootis age.