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Extrasolar Visions II

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 New M Dwarf Planetary Systems

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Sirius_Alpha
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Sirius_Alpha


Number of posts : 4319
Location : Earth
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PostSubject: New M Dwarf Planetary Systems   New M Dwarf Planetary Systems Empty3rd March 2014, 11:40 pm

Bayesian search for low-mass planets around nearby M dwarfs. Estimates for occurrence rate based on global detectability statistics
http://arxiv.org/abs/1403.0430

Planet candidates around GJ 27.1, GJ 160.2, GJ 180, GJ 229, GJ 422, GJ 682. Confirmation of two planets in GJ 433.

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Edasich
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Edasich


Number of posts : 2267
Location : Tau Ceti g - Mid Latitudes
Registration date : 2008-06-02

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PostSubject: Re: New M Dwarf Planetary Systems   New M Dwarf Planetary Systems Empty4th March 2014, 4:21 am

I notice GJ 229 too, the well-known brown dwarf host.
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Led_Zep
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Number of posts : 721
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PostSubject: Re: New M Dwarf Planetary Systems   New M Dwarf Planetary Systems Empty4th March 2014, 4:40 am

I don’t remember if other planets have been discovered with TERRA-HARPS ?
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Sirius_Alpha
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PostSubject: Re: New M Dwarf Planetary Systems   New M Dwarf Planetary Systems Empty4th March 2014, 5:22 am


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Led_Zep
SuperJovian
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Led_Zep


Number of posts : 721
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PostSubject: Re: New M Dwarf Planetary Systems   New M Dwarf Planetary Systems Empty4th March 2014, 5:45 am

GJ 667C of course ! Thank you Sirius
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Lazarus
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Number of posts : 3337
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PostSubject: Re: New M Dwarf Planetary Systems   New M Dwarf Planetary Systems Empty4th March 2014, 2:31 pm

Is there an orbital solution for Gliese 229B, or is the observation time too small for that?
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Led_Zep
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PostSubject: Re: New M Dwarf Planetary Systems   New M Dwarf Planetary Systems Empty4th March 2014, 8:51 pm

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Lazarus
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PostSubject: Re: New M Dwarf Planetary Systems   New M Dwarf Planetary Systems Empty6th March 2014, 2:06 pm

Another thing to note here is that Proxima Centauri (GJ 551) is among the potential additional signals, with periods of 332 and 2200 days. Whether these represent planets is not clear:
Quote :
some of these signals might be false positives caused by noise, insufficient modelling, stellar activity, and/or instrumental artefacts.
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Morpheus
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PostSubject: Re: New M Dwarf Planetary Systems   New M Dwarf Planetary Systems Empty9th March 2014, 6:26 pm

Any planets around Proxima Centauri massive enough to create a noticeable Doppler shift can be hopefully detected this year through microlensing.
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