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Revision as of 03:38, 2 July 2014 editArtman40 (talk | contribs)2,039 editsm Artman40 moved page XO-2b to XO-2Nb: Two new planets were reported to orbit around the primary star, thus needing more precise designation. http://arxiv.org/pdf/1407.0251v1.pdf← Previous edit Revision as of 14:34, 30 September 2014 edit undoArtman40 (talk | contribs)2,039 edits Split-multiNext edit →
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{{Planetbox begin {{Planetbox begin
| name = XO-2b (XO-2Bb) | name = ] (XO-2Bb)
}} }}
{{Planetbox image {{Planetbox image
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}} }}
{{Planetbox star {{Planetbox star
| star = ] (XO-2B) | star = ] (XO-2B)
| constell = ]<ref name="Roman1987"/> | constell = ]<ref name="Roman1987"/>
| RA = {{RA|07|48|06.468}} <ref name="Tycho-2"/> | RA = {{RA|07|48|06.468}} <ref name="Tycho-2"/>
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}} }}
{{Planetbox reference {{Planetbox reference
| star=XO-2 | star=XO-2N
| planet=b | planet=b
}} }}
{{Planetbox end}} {{Planetbox end}}


'''XO-2b''' (or rarely XO-2Bb) is an ] orbiting the ] ] (in fact XO-2B to be precise, since XO-2 is wide binary star) in the ] ].<ref name="SIMBAD">{{cite web '''XO-2Nb''' (or rarely XO-2Bb) is an ] orbiting the ] ], the fainter component of XO-2 wide binary star in the ] ].<ref name="SIMBAD">{{cite web
| url=http://simbad.u-strasbg.fr/simbad/sim-id?Ident= XO-2 b | url=http://simbad.u-strasbg.fr/simbad/sim-id?Ident= XO-2 b
| title =SIMBAD query result:XO-2b -- Extra-solar Planet Candidate | title =SIMBAD query result:XO-2b -- Extra-solar Planet Candidate

Revision as of 14:34, 30 September 2014

Template:Planetbox begin Template:Planetbox image Template:Planetbox star Template:Planetbox orbit Template:Planetbox character Template:Planetbox discovery Template:Planetbox reference Template:Planetbox end

XO-2Nb (or rarely XO-2Bb) is an extrasolar planet orbiting the star XO-2N, the fainter component of XO-2 wide binary star in the constellation Lynx. This planet was found by transit method in 2007 by Burke et al. This was the second such planet found by the XO telescope.

The radial velocity of XO-2 over time, caused by the presence of XO-2 b.

Like most planets found by the transit method, it is a roughly Jupiter sized planet that orbits very close to its host star; in this case, it has a surface temperature of about 1200 K, so it belongs to a group of exoplanets known as hot Jupiters. The planet takes 2.6 days to orbit the star at the average distance of 0.0369 AU. The planet has mass of 57% of Jupiter and radius of 97% of Jupiter. The radius is relatively large for its mass, probably due to its intense heating from its nearby star that bloats the planet’s atmosphere. The large radius for its mass gives a low density of 820 kg/m.

See also

References

  1. XO-2 b "SIMBAD query result:XO-2b -- Extra-solar Planet Candidate". Centre de Données astronomiques de Strasbourg. Retrieved 2009-04-26. {{cite web}}: Check |url= value (help)
  2. Burke, Christopher J.; et al. (2007). "XO-2b: Transiting Hot Jupiter in a Metal-rich Common Proper Motion Binary". The Astrophysical Journal. 671 (2): 2115–2128. arXiv:0705.0003. Bibcode:2007ApJ...671.2115B. doi:10.1086/523087.

Cite error: A list-defined reference named "Roman1987" is not used in the content (see the help page).
Cite error: A list-defined reference named "Sing2011" is not used in the content (see the help page).
Cite error: A list-defined reference named "Torres2008" is not used in the content (see the help page).

Cite error: A list-defined reference named "Tycho-2" is not used in the content (see the help page).

External links

Media related to XO-2b at Wikimedia Commons


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