Sirius_Alpha Admin
Number of posts : 4319 Location : Earth Registration date : 2008-04-06
| Subject: Six new HARPS planets (all Jovian) 27th October 2008, 8:09 pm | |
| The HARPS search for southern extra-solar planets XVII. Six long-period giant planets around BD -17 0063, HD 20868, HD 73267, HD 131664, HD 145377, HD 153950 http://arxiv.org/abs/0810.4662 - Abstract wrote:
- We report the discovery of six new substellar companions of main-sequence stars, detected through multiple Doppler measurements with the instrument HARPS installed on the ESO 3.6m telescope, La Silla, Chile. These extrasolar planets are orbiting the stars BD -17 0063, HD 20868, HD 73267, HD 131664, HD 145377, HD 153950. The orbital characteristics which best fit the observed data are depicted in this paper, as well as the stellar and planetary parameters. Masses of the companions range from 2 to 18 Jupiter masses, and periods range from 100 to 2000 days. The observational data are carefully analysed for activity-induced effects and we conclude on the reliability of the observed radial-velocity variations as of exoplanetary origin. Of particular interest is the very massive planet (or brown-dwarf companion) around the metal-rich HD 131664 with M2sini= 18.15 MJup, and a 5.34-year orbital period. These new discoveries reinforces the observed statistical properties of the exoplanet sample as known so far.
_________________ Caps Lock: Cruise control for 'Cool'!
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Lazarus dF star
Number of posts : 3337 Registration date : 2008-06-12
| Subject: Re: Six new HARPS planets (all Jovian) 28th October 2008, 1:46 pm | |
| Yay! More eccentric planets. Hints of a 2-planet system for HD 145377 as well. | |
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Darkness nova Asteroid
Number of posts : 69 Location : Octans Registration date : 2008-06-12
| Subject: Re: Six new HARPS planets (all Jovian) 28th October 2008, 5:53 pm | |
| Ohh more southern planets. There also rather near sols metallicy which is interesting...
Although now whenever I hear about eccentric gaints I'm always thinking "what if there two smaller ones in resonance?" | |
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Sirius_Alpha Admin
Number of posts : 4319 Location : Earth Registration date : 2008-04-06
| Subject: Re: Six new HARPS planets (all Jovian) 28th October 2008, 8:02 pm | |
| - Darkness nova wrote:
- Although now whenever I hear about eccentric gaints I'm always thinking "what if there two smaller ones in resonance?"
Yeah me too... I wonder how wide-spread that is? I wonder the opposite of that, how many of these eccentric planets are really eccentric? _________________ Caps Lock: Cruise control for 'Cool'!
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| Subject: Re: Six new HARPS planets (all Jovian) | |
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