| HIP 13044 - Exoplanet of extragalactic origin? (DISCONFIRMED) | |
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Lazarus dF star
Number of posts : 3337 Registration date : 2008-06-12
| Subject: HIP 13044 - Exoplanet of extragalactic origin? (DISCONFIRMED) 18th November 2010, 3:16 pm | |
| ESO Press ReleaseHIP 13044 is a horizontal branch star which is part of the Helmi stream. The planet orbits the star with a 16.2-day period. | |
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Edasich dK star
Number of posts : 2267 Location : Tau Ceti g - Mid Latitudes Registration date : 2008-06-02
| Subject: Re: HIP 13044 - Exoplanet of extragalactic origin? (DISCONFIRMED) 18th November 2010, 4:39 pm | |
| Extragalactic visitor. And we're ever closer to 500 exoplanets too... | |
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Sirius_Alpha Admin
Number of posts : 4319 Location : Earth Registration date : 2008-04-06
| Subject: Re: HIP 13044 - Exoplanet of extragalactic origin? (DISCONFIRMED) 18th November 2010, 4:48 pm | |
| Wow! Very interesting find. _________________ Caps Lock: Cruise control for 'Cool'!
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Edasich dK star
Number of posts : 2267 Location : Tau Ceti g - Mid Latitudes Registration date : 2008-06-02
| Subject: Re: HIP 13044 - Exoplanet of extragalactic origin? (DISCONFIRMED) 19th November 2010, 4:52 am | |
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Borislav Jovian
Number of posts : 564 Registration date : 2008-11-12
| Subject: Re: HIP 13044 - Exoplanet of extragalactic origin? (DISCONFIRMED) 19th November 2010, 5:10 am | |
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Lazarus dF star
Number of posts : 3337 Registration date : 2008-06-12
| Subject: Re: HIP 13044 - Exoplanet of extragalactic origin? (DISCONFIRMED) 19th November 2010, 1:53 pm | |
| I think so. I was wondering about B1620-26, but the metallicity of the Messier 4 globular cluster is around -1. | |
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Sirius_Alpha Admin
Number of posts : 4319 Location : Earth Registration date : 2008-04-06
| Subject: Re: HIP 13044 - Exoplanet of extragalactic origin? (DISCONFIRMED) 20th November 2010, 11:03 am | |
| _________________ Caps Lock: Cruise control for 'Cool'!
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Lazarus dF star
Number of posts : 3337 Registration date : 2008-06-12
| Subject: Re: HIP 13044 - Exoplanet of extragalactic origin? (DISCONFIRMED) 24th November 2010, 3:55 am | |
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Lazarus dF star
Number of posts : 3337 Registration date : 2008-06-12
| Subject: No planet around HIP 13044? 17th December 2013, 5:39 pm | |
| Spotted in A&A forthcoming: No evidence of the planet orbiting the extremely metal-poor extragalactic star HIP13044M. I. Jones,J. S. Jenkins Received: 25 June 2013 / Accepted: 25 August 2013 DOI: http://dx.doi.org/10.1051/0004-6361/201322132 | |
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Lazarus dF star
Number of posts : 3337 Registration date : 2008-06-12
| Subject: Re: HIP 13044 - Exoplanet of extragalactic origin? (DISCONFIRMED) 30th December 2013, 12:35 pm | |
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Stalker Jovian
Number of posts : 540 Age : 33 Location : Paris, France Registration date : 2008-06-16
| Subject: Re: HIP 13044 - Exoplanet of extragalactic origin? (DISCONFIRMED) 30th December 2013, 1:13 pm | |
| I will do the same. _________________ | |
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Sirius_Alpha Admin
Number of posts : 4319 Location : Earth Registration date : 2008-04-06
| Subject: Re: HIP 13044 - Exoplanet of extragalactic origin? (DISCONFIRMED) 2nd January 2014, 9:25 pm | |
| No evidence of the planet orbiting the extremely metal-poor extragalactic star HIP13044 http://arxiv.org/abs/1401.0517 - Quote :
- CONTEXT: The recent discovery of three giant planets orbiting the extremely metal-poor stars HIP11952 and HIP13044 have challenged theoretical predictions of the core-accretion model. According to this, the metal content of the protoplanetary disk from which giant planets are formed is a key ingredient for the early formation of planetesimals prior to the runaway accretion of the surrounding gas.
AIMS: We reanalyzed the original FEROS data that were used to detect the planets to prove or refute their existence, employing our new reduction and analysis methods. METHOD: We applied the cross-correlation technique to FEROS spectra to measure the radial velocity variation of HIP13044 and HIP11952. We reached a typical precision of ∼ 35 \ms\, for HIP13044 and ∼ 25 \ms\, for HIP11952, which is significantly superior to the uncertainties presented previously. RESULTS: We found no evidence of the planet orbiting the metal-poor extragalactic star HIP13044. We show that given our radial velocity precision, and considering the large number of radial velocity epochs, the probability for a non-detection of the radial velocity signal recently claimed is lower than 10−4. Finally, we also confirm findings that the extremely metal-poor star HIP11952 does not contain a system of two gas giant planets. These results reaffirm the expectations from the core-accretion model of planet formation. _________________ Caps Lock: Cruise control for 'Cool'!
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Lazarus dF star
Number of posts : 3337 Registration date : 2008-06-12
| Subject: Re: HIP 13044 - Exoplanet of extragalactic origin? (DISCONFIRMED) 3rd January 2014, 5:13 am | |
| Reburying HIP 11952 as well, ouch. Looks like the FEROS-DRS barycentric correction, and taking the time to be the start of the observation rather than the centre may be to blame. | |
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| Subject: Re: HIP 13044 - Exoplanet of extragalactic origin? (DISCONFIRMED) | |
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| HIP 13044 - Exoplanet of extragalactic origin? (DISCONFIRMED) | |
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