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Revision as of 22:38, 5 September 2013 edit undoHeadbomb (talk | contribs)Edit filter managers, Autopatrolled, Extended confirmed users, Page movers, File movers, New page reviewers, Pending changes reviewers, Rollbackers, Template editors454,267 edits ce refsNext edit → |
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| gravity=4.7<ref name="bailey08"/> |
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| gravity=4.7<ref name="bailey08"/> |
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| rotation = |
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| rotation = |
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| luminosity_bolometric=0.035<ref group="note">From ''L''=4π''R''<sup>2</sup>σ''T''<sub>eff</sub><sup>4</sup>, where ''L'' is the luminosity, ''R'' is the radius, ''T''<sub>eff</sub> is the effective surface temperature and ''σ'' is the ].</ref> |
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| luminosity_bolometric=0.035<ref group="note">From ''L'' = 4π''R''<sup>2</sup>σ''T''<sub>eff</sub><sup>4</sup>, where ''L'' is the luminosity, ''R'' is the radius, ''T''<sub>eff</sub> is the effective surface temperature and ''σ'' is the ].</ref> |
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| temperature = 3,620<ref name=bessell1994/> |
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| temperature = 3,620<ref name=bessell1994/> |
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In September 2008, it was announced that a ]-like planet had been detected in a long-period, near-circular orbit around this star (false alarm probability thus far: a negligible 0.05%). It would induce an ] perturbation on its star of at least 0.95 ]s and is thus a good candidate for being detected by astrometric observations. Among currently-known exoplanets, it would have an ] from its star second only to ], although direct imaging is problematic due to the star–planet contrast.<ref name="bailey08" /> |
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In September 2008, it was announced that a ]-like planet had been detected in a long-period, near-circular orbit around this star (false alarm probability thus far: a negligible 0.05%). It would induce an ] perturbation on its star of at least 0.95 ]s and is thus a good candidate for being detected by astrometric observations. Among currently-known exoplanets, it would have an ] from its star second only to ], although direct imaging is problematic due to the star–planet contrast.<ref name="bailey08" /> |
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If this system has a comet disc, it is undetectable "brighter than the fractional dust luminosity 10<sup>−5</sup>" of a recent Herschel study.<ref name=nodebris>B. C. Matthews; forthcoming study promised in {{Cite journal |
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If this system has a comet disc, it is undetectable "brighter than the fractional dust luminosity 10<sup>−5</sup>" of a recent Herschel study.<ref name=nodebris/> |
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|arxiv=1211.4898 |
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|title=A DEBRIS Disk Around The Planet Hosting M-star GJ581 Spatially Resolved with Herschel |
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|journal=Astronomy and Astrophysics |
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|year=2012 |
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|authors=J.-F. Lestrade et al.|doi = 10.1051/0004-6361/201220325 |bibcode = 2012A&A...548A..86L }}</ref> |
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{{OrbitboxPlanet begin}} |
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{{OrbitboxPlanet begin}} |
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{{reflist|refs= |
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<ref name=bessell1994>Interpolated value from ], per:<br>{{cite conference | title=The Temperature Scale for Cool Dwarfs | last=Bessell | first=M. S. | title=The Bottom of the Main Sequence - and Beyond | booktitle=Proceedings of the ESO Workshop | location=Garching, Germany | date=August 10–12, 1994 | editors=Christopher G. Tinney | publisher=Springer-Verlag Berlin Heidelberg New York | bibcode=1995bmsb.conf..123B }}</ref> |
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B. C. Matthews; forthcoming study promised in {{Cite journal |
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|last1=Lestrade |first1=J.-F. |
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|year=2012 |
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|title=A DEBRIS Disk Around The Planet Hosting M-star GJ581 Spatially Resolved with Herschel |
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|journal=] |
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|arxiv=1211.4898 |
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|bibcode=2012A&A...548A..86L |
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|doi=10.1051/0004-6361/201220325 |
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}}</ref> |
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<ref name=bessell1994>Interpolated value from ], per: {{cite conference |
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<ref name="bailey08">{{cite journal | author=Bailey, Jeremy ''et al.'' | title=A Jupiter-like Planet Orbiting the Nearby M Dwarf GJ832 | doi=10.1088/0004-637X/690/1/743 | bibcode=2009ApJ...690..743B | journal=The Astrophysical Journal | volume=690 | issue=1 | pages=743–747 | year=2008 | accessdate=2008-09-02 | arxiv=0809.0172 }}</ref> |
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|last=Bessell |first=M. S. |
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|title=The Temperature Scale for Cool Dwarfs |
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|editor-last=Tinney |editor-first=C. G. |
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|year=1995 |
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|booktitle=The Bottom of the Main Sequence - and Beyond, Proceedings of the ESO Workshop |
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|page=123 |
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|publisher=] |
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|bibcode=1995bmsb.conf..123B |
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}}</ref> |
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<ref name=apjss53_643>{{cite journal | bibcode=1983ApJS...53..643J | title=Predicted infrared brightness of stars within 25 parsecs of the sun | author=Johnson, H. M.; Wright, C. D. | year=1983 | journal=Astrophysical Journal Supplement Series | volume=53 | pages=643–771 | doi=10.1086/190905 }}</ref> |
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{{cite journal |
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|last1=Bailey |first1=J. |
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|year=2008 |
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|title=A Jupiter-like Planet Orbiting the Nearby M Dwarf GJ832 |
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|journal=] |
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|volume=690 |issue=1 |pages=743–747 |
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|arxiv=0809.0172 |
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|bibcode=2009ApJ...690..743B |
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|doi=10.1088/0004-637X/690/1/743 |
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}}</ref> |
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<ref name=Schmitt>{{ cite journal | author=Schmitt, J.H.M.M.; Fleming, T.A.; Giampapa M.S. | title=The X-ray view of the low-mass stars in the solar neighborhood | journal=Astrophysical Journal | month=September | year=1995 | volume=450 | issue=9 | pages=392–400 |bibcode=1995ApJ...450..392S | doi=10.1086/176149 }}</ref> |
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{{cite journal |
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|last1=Johnson |first1=H. M. |
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|last2=Wright |first2=C. D. |
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|year=1983 |
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|bibcode=1983ApJS...53..643J |
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|title=Predicted infrared brightness of stars within 25 parsecs of the sun |
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|journal=] |
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|volume=53 |pages=643–771 |
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|doi=10.1086/190905 |
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}}</ref> |
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<ref name="van Leeuwen2007">{{cite journal | title=Validation of the new Hipparcos reduction | url=http://www.aanda.org/index.php?option=com_article&access=bibcode&Itemid=129&bibcode=2007A%2526A...474..653VFUL | last1=van Leeuwen | first1=F. | journal=Astronomy and Astrophysics | volume=474 | issue=2 | pages=653–664 | year=2007 | arxiv=0708.1752 | bibcode=2007A&A...474..653V | doi=10.1051/0004-6361:20078357 }} </ref> |
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{{ cite journal |
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|last1=Schmitt |first1=J. H. M. M. |
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|last2=Fleming |first2=T. A. |
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|last3=Giampapa |first3=M. S. |
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|year=1995 |
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|title=The X-ray view of the low-mass stars in the solar neighborhood |
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|journal=] |
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|volume=450 |issue=9 |pages=392–400 |
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|bibcode=1995ApJ...450..392S |
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|doi=10.1086/176149 |
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}}</ref> |
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<ref name="van Leeuwen2007"> |
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{{cite journal |
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|last1=van Leeuwen |first1=F. |
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|year=2007 |
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|title=Validation of the new Hipparcos reduction |
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|url=http://www.aanda.org/articles/aa/pdf/2007/41/aa8357-07.pdf |
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|journal=] |
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|volume=474 |issue=2 |pages=653–664 |
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|arxiv=0708.1752 |
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|bibcode=2007A&A...474..653V |
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|doi=10.1051/0004-6361:20078357 |
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}} </ref> |
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If this system has a comet disc, it is undetectable "brighter than the fractional dust luminosity 10" of a recent Herschel study.
Category