Planetary system around metal-poor star HIP 11952

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Post by Borislav on 23rd January 2013, 9:14 am


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Post by Edasich on 23rd January 2013, 10:50 am

It seems an incomplete research paper through, if not in progress.
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Post by Sirius_Alpha on 13th February 2013, 9:17 pm


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Post by tommi59 on 14th February 2013, 7:45 am

Strange as I can understand that in case of low mass planets (gj 581 g,f) it could happen but 2 jovian planets was announced and now disproven
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Post by Edasich on 14th February 2013, 9:58 am

Moreover I don't get why only HIP 11952 c has been removed by EPE list...

How is that website working? :?
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Post by Lazarus on 14th February 2013, 3:16 pm

tommi59 wrote:Strange as I can understand that in case of low mass planets (gj 581 g,f) it could happen but 2 jovian planets was announced and now disproven
The paper mentions that the RV errors are quite high due to the star's relatively hot temperature and lack of metals. Maybe that had something to do with it?
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Post by Sirius_Alpha on 14th February 2013, 4:52 pm

I can't say I'm surprised. I know it's wholly unscientific, but looking at the RV plot for HIP 11952 in the original discovery paper, the fit didn't seem too convincing to me. It kinda looked as if it wasn't statistically significant.

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Post by Lazarus on 15th February 2013, 2:07 pm

Anyone tried the original velocity set in Systemic?
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Post by Sirius_Alpha on 15th February 2013, 2:30 pm

I can't get Systemic to work anymore :\

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Post by Edasich on 16th February 2013, 9:55 am

Sirius_Alpha wrote:I can't get Systemic to work anymore :\

Neither can I. The old version worked perfectly: the newest one crashes at once. Suspect
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Post by Lazarus on 17th February 2013, 3:08 pm

Maybe all the recent Java security updates broke it?
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Post by Edasich on 18th February 2013, 4:59 am

Lazarus wrote:Maybe all the recent Java security updates broke it?

I don't know, but several system setting have changed, like no more defaultsystem.dat file, you can load only one system as systemic opens. Suspect
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Post by Sirius_Alpha on 18th February 2013, 11:08 am

I remember having to do that specifically myself before I was just entirely unable to run it. I've got an issue where trying to run the file just opens the jar file to reveal the component classes and files instead of running it.

I wonder how much effort would be required to build a new Systemic-like programme.

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Post by Lazarus on 18th February 2013, 2:00 pm

Was considering doing something like that to teach myself OpenCL...
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Post by Lazarus on 16th June 2013, 4:48 pm

From A&A forthcoming:

Reanalysis of the FEROS observations of HIP 11952
A. Müller, V. Roccatagliata, Th. Henning, D. Fedele, A. Pasquali, E. Caffau, M. V. Rodríguez-Ledesma, M. Mohler-Fischer, U. Seemann, R. J. Klement
Received: 18 March 2013 / Accepted: 04 June 2013
DOI: http://dx.doi.org/10.1051/0004-6361/201321497
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Post by Lazarus on 16th July 2013, 4:52 pm

It's now up. Apparently there was a problem with the barycentric correction in the FEROS-DRS pipeline. After fixing the barycentric correction the FEROS results show no evidence for the planets.
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Post by Sirius_Alpha on 22nd July 2013, 12:04 am


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