new brown dwarf discovery

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new brown dwarf discovery

Postby Cralis on Fri 10 Jul 2009 03:45

http://www.astronomynow.com/news/n0907/03bd/

This is interesting because it shows a brown dwarf might exist in an area where it would have been required to form at the same time as the stellar companion - something that previously wasn't thought possible.

But I also found something else in the article interesting: it states that planets cannot exist with a semi-major axis greater than 0.17au inside the companion's orbit due to tidal forces. According to http://exoplanet.eu/star.php?st=HD+191760 the orbital distance between the companions is thought to be 0.09au - there you go, evidence for our system generation charts to support tidal disruption. Although in this case it would be complete disruption between and beyond the companions...
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