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Pair of brown dwarfs found

Posted: 13.07.2004, 17:50
by danielj
I recently read about a pair of brown dwarfs found in space.com.(http://www.space.com/astronotes/astronotes.html).
One which has 25 Jupiter masses and the other with 50 Jupiter masses.Is it a possible addition to extrasolar.ssc or not?Since they are not orbiting a normal star,it?s difficult to say if it go to stars.dat or extrasolar.ssc.

Posted: 13.07.2004, 21:20
by Evil Dr Ganymede
The article rather helpfully doesn't tell us where those BDs are located... anyone got any more info on that? It sounds rather intriguing.

Posted: 13.07.2004, 21:39
by selden
The official press release is at http://cfa-www.harvard.edu/press/pr0424.html

and the discovery preprint is at http://cfa-www.harvard.edu/~kluhman/paper.pdf

They're members of the Chamaeleon I star forming region.

Posted: 13.07.2004, 21:40
by Spaceman Spiff
http://cfa-www.harvard.edu/~kluhman/paper.pdf.

Code: Select all

Comp.   R.A.(J2000)      Dec (J2000)
A       11 01 19.218    -77 32 38.60
B       11 01 19.438    -77 32 37.36

Can't quickly spot a distance.

Spiff.

Posted: 13.07.2004, 21:47
by selden
160 +/- 15 parsecs

Ref: Whittet etal. 1997, A&A, 327, 1194
briefly, see:
http://aa.springer.de/papers/7327003/2301194/small.htm

Posted: 13.07.2004, 23:37
by Evil Dr Ganymede
I dunno... why couldn't this pair of dwarfs have formed separately and been captured into their distant orbit around eachother during a later encounter?

Posted: 14.07.2004, 02:31
by Dollan
Evil Dr Ganymede wrote:I dunno... why couldn't this pair of dwarfs have formed separately and been captured into their distant orbit around eachother during a later encounter?


Is there any information on their orbital eccentricity? I would think that the higher the eccentricity, the more likely that one became bound to the other much later.

Of course, this might be a poor determination.....

...John...