Sirius_Alpha Admin
Number of posts : 4320 Location : Earth Registration date : 2008-04-06
| Subject: Brown dwarf discovered at TYC 2534-698-1 9th November 2008, 9:06 pm | |
| Discovery of a Low-Mass Companion to the Solar-Type Star TYC 2534-698-1 http://arxiv.org/abs/0811.1053 - Abstract wrote:
- Brown dwarfs and low-mass stellar companions are interesting objects to study since they occupy the mass region between deuterium and hydrogen burning. We report here the serendipitous discovery of a low-mass companion in an eccentric orbit around a solar-type main sequence star. The stellar primary, TYC 2534-698-1, is a G2V star that was monitored both spectroscopically and photometrically over the course of several months. Radial velocity observations indicate a minimum mass of 0.037 M_solar and an orbital period of ~103 days for the companion. Photometry outside of the transit window shows the star to be stable to within ~6 millimags. The semi-major axis of the orbit places the companion in the 'brown dwarf desert' and we discuss potential follow-up observations that could constrain the mass of the companion.
_________________ Caps Lock: Cruise control for 'Cool'!
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Edasich dK star
Number of posts : 2285 Location : Tau Ceti g - Mid Latitudes Registration date : 2008-06-02
| Subject: Re: Brown dwarf discovered at TYC 2534-698-1 10th November 2008, 6:09 am | |
| A brown dwarf object orbitin' around a solar kin is always welcome | |
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Lazarus dF star
Number of posts : 3337 Registration date : 2008-06-12
| Subject: Re: Brown dwarf discovered at TYC 2534-698-1 10th November 2008, 7:02 am | |
| The question is whether this is actually a brown dwarf or a star in a low-inclination orbit: the fact it is in the middle of the brown dwarf desert means we should probably regard the mass with suspicion. | |
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| Subject: Re: Brown dwarf discovered at TYC 2534-698-1 | |
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