Request - A Brown Dwarf from past 2007-2008

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Request - A Brown Dwarf from past 2007-2008

Post by Edasich on 14th February 2009, 9:34 am

I don't know if it's the right section. If so, feel free to redirect elsewhere.

I was searching information about a brown dwarf companion orbiting a solar-like (or slightly evolved) star in Bootes.
The dilemma is I don't remember the host star. It's gotta be an HD 12xxxx something.
Maybe the substellar object has been announced but not officially published.
Anyway it lies within system snowline, I think (between 1-2 AUs).

Can anybody help me? alien
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Re: Request - A Brown Dwarf from past 2007-2008

Post by Michael Johne on 14th February 2009, 10:11 am

Hi!

An neglected brown dwarf candidate from 2001:
HD 127506 B (22 pc in Bootes) HZ=0.37 AUs
M=36 Mj P=2599 days e=0.72
Putative average separation=3.7 AUs
Accounting a high eccentricity (e=0.72), such object swings between 1.04 and 6.36 AUs.

Bye!
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Re: Request - A Brown Dwarf from past 2007-2008

Post by Edasich on 14th February 2009, 10:38 am

Nope. A solar like star. Spectral type G2V or G2IV-V.
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Re: Request - A Brown Dwarf from past 2007-2008

Post by Edasich on 26th February 2009, 6:20 pm

Anything? Maybe was it in a conference paper alike Iota Aurigae's case?
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Re: Request - A Brown Dwarf from past 2007-2008

Post by Edasich on 19th April 2009, 4:55 am

I know somebody has posted a topic about in previous forum EVI.
Is there a way to access old forum's topics?
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Re: Request - A Brown Dwarf from past 2007-2008

Post by Sirius_Alpha on 19th April 2009, 12:25 pm

Not anymore, at least not for me.

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Re: Request - A Brown Dwarf from past 2007-2008

Post by Edasich on 16th May 2009, 3:00 pm

Was it HD 126681?

Radial velocities (only graphic) are available in this paper:

Sozzetti et al. (2006) - A Keck HIRES Doppler search for planets orbiting metal-poor dwarfs. I.Testing giant planet formation and migration scenarios.

Though authors do not mention any precise candidate object, I have found a brown dwarf in system snowline with Systemic console.
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Re: Request - A Brown Dwarf from past 2007-2008

Post by Edasich on 5th May 2010, 9:32 am

Gotcha.

HD 129814 (G5) d=42 pc in Bootes.

Brown dwarf companion (46.3 Mj), P=25.8 yrs (e=0.33)

http://exoplanet.eu/papers/Marcy_Geoff.pdf
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