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Revision as of 17:53, 28 January 2018 editMike s (talk | contribs)Extended confirmed users21,550 edits update distance and replace ref← Previous edit Revision as of 18:17, 28 January 2018 edit undoMike s (talk | contribs)Extended confirmed users21,550 edits update Other designationsNext edit →
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}} }}
{{Starbox detail {{Starbox detail
| component1 = XO-2 S | component1 = XO-2S
| mass = 0.982 ± 0.034<ref name="Desidera2014" /> | mass = 0.982 ± 0.034<ref name="Desidera2014" />
| radius = 1.02<ref name="Desidera2014" /> | radius = 1.02<ref name="Desidera2014" />
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| rotation = | rotation =
| age_gyr = 7.1 ± {{±|2.5|2.9}}<ref name="Desidera2014" /> | age_gyr = 7.1 ± {{±|2.5|2.9}}<ref name="Desidera2014" />
| component2 = XO-2 N | component2 = XO-2N
| class2 = K0V | class2 = K0V
| mass2 = 0.971 ± 0.034<ref name="Fernandez2009" /> | mass2 = 0.971 ± 0.034<ref name="Fernandez2009" />
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}} }}
{{Starbox catalog {{Starbox catalog
| component1 = XO-2S
| names = ] 3413-5-1, ] 03413-00005, ] J07480647+5013328<ref name="SIMBAD" />
| names1 = {{odlist | 2MASS=J07480748+5013032 | GSC=03413-00210 | LSPM=J0748+5013S | TYC=3413-210-1 }}<ref name="Simbad XO-2S"/>
| component2 = XO-2N
| names2 = {{odlist | 2MASS=J07480647+5013328 | GSC=03413-00005 | LSPM=J0748+5013N | TYC=3413-5-1 }}<ref name="Simbad XO-2N"/>
}} }}
{{Starbox reference {{Starbox reference
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'''XO-2''' Is a binary star. It consists of two components: '''XO-2S''' (Also known as '''XO-2A''') and '''XO-2N''' (Also known as '''XO-2B''').<ref name="Desidera2014" /> '''XO-2''' Is a binary star. It consists of two components: '''XO-2S''' (Also known as '''XO-2A''') and '''XO-2N''' (Also known as '''XO-2B''').<ref name="Desidera2014" />


This system is located approximately {{convert|150|pc|ly|disp=output number only}} ] away<ref name="Gaia2016"/> from ] in the ]. Both of these stars are slightly cooler than the Sun and are nearly identical to each other. The system has a ] of 11 and cannot be seen with the naked eye but is visible through a small ]. These stars are also notable for their large ]s.<ref name="SIMBAD" /> This system is located approximately {{convert|150|pc|ly|disp=output number only}} ] away<ref name="Gaia2016"/> from ] in the ]. Both of these stars are slightly cooler than the Sun and are nearly identical to each other. The system has a ] of 11 and cannot be seen with the naked eye but is visible through a small ]. These stars are also notable for their large ]s.<ref name="Simbad XO-2S"/><ref name="Simbad XO-2N"/>


XO-2N and XO-2S have a separation of approximately {{formatnum:4600}} ].<ref name="Burke2007" /> XO-2N and XO-2S have a separation of approximately {{formatnum:4600}} ].<ref name="Burke2007" />
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<ref name="Burke2007">{{cite journal | title=XO-2b: Transiting Hot Jupiter in a Metal-rich Common Proper Motion Binary | url=http://iopscience.iop.org/article/10.1086/523087/fulltext/ | last1=Burke | first1=Christopher J. | last2=McCullough | first2=P. R. | last3=Valenti | first3=Jeff A. | last4=Johns‐krull | first4=Christopher M. | last5=Janes | first5=Kenneth A. | last6=Heasley | first6=J. N. | last7=Summers | first7=F. J. | last8=Stys | first8=J. E. | last9=Bissinger | first9=R. | last10=Fleenor | first10=Michael L. | last11=Foote | first11=Cindy N. | last12=Garcia‐Melendo | first12=Enrique | last13=Gary | first13=Bruce L. | last14=Howell | first14=P. J. | last15=Mallia | first15=F. | last16=Masi | first16=G. | last17=Taylor | first17=B. | last18=Vanmunster | first18=T. | display-authors=1 | journal=The Astrophysical Journal | volume=671 | issue=2 | pages=2115–2128 | year=2007 | arxiv=0705.0003 | bibcode=2007ApJ...671.2115B | doi=10.1086/523087 }}</ref> <ref name="Burke2007">{{cite journal | title=XO-2b: Transiting Hot Jupiter in a Metal-rich Common Proper Motion Binary | url=http://iopscience.iop.org/article/10.1086/523087/fulltext/ | last1=Burke | first1=Christopher J. | last2=McCullough | first2=P. R. | last3=Valenti | first3=Jeff A. | last4=Johns‐krull | first4=Christopher M. | last5=Janes | first5=Kenneth A. | last6=Heasley | first6=J. N. | last7=Summers | first7=F. J. | last8=Stys | first8=J. E. | last9=Bissinger | first9=R. | last10=Fleenor | first10=Michael L. | last11=Foote | first11=Cindy N. | last12=Garcia‐Melendo | first12=Enrique | last13=Gary | first13=Bruce L. | last14=Howell | first14=P. J. | last15=Mallia | first15=F. | last16=Masi | first16=G. | last17=Taylor | first17=B. | last18=Vanmunster | first18=T. | display-authors=1 | journal=The Astrophysical Journal | volume=671 | issue=2 | pages=2115–2128 | year=2007 | arxiv=0705.0003 | bibcode=2007ApJ...671.2115B | doi=10.1086/523087 }}</ref>

<ref name="Desidera2014">{{cite journal | title=The GAPS programme with HARPS-N at TNG. IV. A planetary system around XO-2S | url=https://www.aanda.org/articles/aa/full_html/2014/07/aa24339-14/aa24339-14.html | last1=Desidera | first1=S. | last2=Bonomo | first2=A. S. | last3=Claudi | first3=R. U. | last4=Damasso | first4=M. | last5=Biazzo | first5=K. | last6=Sozzetti | first6=A. | last7=Marzari | first7=F. | last8=Benatti | first8=S. | last9=Gandolfi | first9=D. | last10=Gratton | first10=R. | last11=Lanza | first11=A. F. | last12=Nascimbeni | first12=V. | last13=Andreuzzi | first13=G. | last14=Affer | first14=L. | last15=Barbieri | first15=M. | last16=Bedin | first16=L. R. | last17=Bignamini | first17=A. | last18=Bonavita | first18=M. | last19=Borsa | first19=F. | last20=Calcidese | first20=P. | last21=Christille | first21=J. M. | last22=Cosentino | first22=R. | last23=Covino | first23=E. | last24=Esposito | first24=M. | last25=Giacobbe | first25=P. | last26=Harutyunyan | first26=A. | last27=Latham | first27=D. | last28=Lattanzi | first28=M. | last29=Leto | first29=G. | last30=Lodato | first30=G. | display-authors=1 | journal=Astronomy and Astrophysics | volume=567 | issue=6 | at=L6 | year=2014 | arxiv=1407.0251 | bibcode=2014A&A...567L...6D | doi=10.1051/0004-6361/201424339 }}</ref>


<ref name="Fernandez2009">{{cite journal | title=The Transit Light Curve Project. XII. Six Transits of the Exoplanet XO-2b | url=http://iopscience.iop.org/article/10.1088/0004-6256/137/6/4911 | last1=Fernandez | first1=Jose M. | last2=Holman | first2=Matthew J. | last3=Winn | first3=Joshua N. | last4=Torres | first4=Guillermo | last5=Shporer | first5=Avi | last6=Mazeh | first6=Tsevi | last7=Esquerdo | first7=Gilbert A. | last8=Everett | first8=Mark E. | display-authors=1 | journal=The Astronomical Journal | volume=137 | issue=6 | pages=4911–4916 | year=2009 | arxiv=0903.2687 | bibcode=2009AJ....137.4911F | doi=10.1088/0004-6256/137/6/4911 }}</ref> <ref name="Fernandez2009">{{cite journal | title=The Transit Light Curve Project. XII. Six Transits of the Exoplanet XO-2b | url=http://iopscience.iop.org/article/10.1088/0004-6256/137/6/4911 | last1=Fernandez | first1=Jose M. | last2=Holman | first2=Matthew J. | last3=Winn | first3=Joshua N. | last4=Torres | first4=Guillermo | last5=Shporer | first5=Avi | last6=Mazeh | first6=Tsevi | last7=Esquerdo | first7=Gilbert A. | last8=Everett | first8=Mark E. | display-authors=1 | journal=The Astronomical Journal | volume=137 | issue=6 | pages=4911–4916 | year=2009 | arxiv=0903.2687 | bibcode=2009AJ....137.4911F | doi=10.1088/0004-6256/137/6/4911 }}</ref>
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<ref name="Roman1987">{{cite journal | title=Identification of a Constellation From a Position | url=http://articles.adsabs.harvard.edu/full/1987PASP...99..695R | last1=Roman | first1=Nancy G. | journal=Publications of the Astronomical Society of the Pacific | volume=99 | issue=617 | pages=695–699 | year=1987 | bibcode=1987PASP...99..695R | doi=10.1086/132034 }} </ref> <ref name="Roman1987">{{cite journal | title=Identification of a Constellation From a Position | url=http://articles.adsabs.harvard.edu/full/1987PASP...99..695R | last1=Roman | first1=Nancy G. | journal=Publications of the Astronomical Society of the Pacific | volume=99 | issue=617 | pages=695–699 | year=1987 | bibcode=1987PASP...99..695R | doi=10.1086/132034 }} </ref>


<ref name="SIMBAD">{{cite web | url=http://simbad.u-strasbg.fr/simbad/sim-id?Ident=XO-2&NbIdent=1&Radius=2&Radius.unit=arcmin&submit=submit+id | title=TYC 3413-5-1 -- High proper-motion Star | publisher=Centre de Données astronomiques de Strasbourg | accessdate=2012-01-15 }}</ref> <ref name="Simbad XO-2S">{{cite simbad | title=TYC 3413-210-1 |accessdate=2018-01-28}}</ref>


<ref name="Simbad XO-2N">{{cite simbad | title=TYC 3413-5-1 |accessdate=2018-01-28}}</ref>
<ref name="Sing2011">{{cite journal | title=Gran Telescopio Canarias OSIRIS transiting exoplanet atmospheric survey: detection of potassium in XO-2b from narrowband spectrophotometry | url=https://www.aanda.org/articles/aa/full_html/2011/03/aa15579-10/aa15579-10.html | last1=Sing | first1=D. K. | last2=Désert | first2=J.-M. | last3=Fortney | first3=J. J. | last4=Lecavelier Des Etangs | first4=A. | last5=Ballester | first5=G. E. | last6=Cepa | first6=J. | last7=Ehrenreich | first7=D. | last8=López-Morales | first8=M. | last9=Pont | first9=F. | last10=Shabram | first10=M. | last11=Vidal-Madjar | first11=A. | display-authors=1 | journal=Astronomy and Astrophysics | volume=527 | at=A73 | year=2011 | arxiv=1008.4795 | bibcode=2011A&A...527A..73S | doi=10.1051/0004-6361/201015579 }}</ref>


<ref name="Desidera2014">{{cite journal | title=The GAPS programme with HARPS-N at TNG. IV. A planetary system around XO-2S | url=https://www.aanda.org/articles/aa/full_html/2014/07/aa24339-14/aa24339-14.html | last1=Desidera | first1=S. | last2=Bonomo | first2=A. S. | last3=Claudi | first3=R. U. | last4=Damasso | first4=M. | last5=Biazzo | first5=K. | last6=Sozzetti | first6=A. | last7=Marzari | first7=F. | last8=Benatti | first8=S. | last9=Gandolfi | first9=D. | last10=Gratton | first10=R. | last11=Lanza | first11=A. F. | last12=Nascimbeni | first12=V. | last13=Andreuzzi | first13=G. | last14=Affer | first14=L. | last15=Barbieri | first15=M. | last16=Bedin | first16=L. R. | last17=Bignamini | first17=A. | last18=Bonavita | first18=M. | last19=Borsa | first19=F. | last20=Calcidese | first20=P. | last21=Christille | first21=J. M. | last22=Cosentino | first22=R. | last23=Covino | first23=E. | last24=Esposito | first24=M. | last25=Giacobbe | first25=P. | last26=Harutyunyan | first26=A. | last27=Latham | first27=D. | last28=Lattanzi | first28=M. | last29=Leto | first29=G. | last30=Lodato | first30=G. | display-authors=1 | journal=Astronomy and Astrophysics | volume=567 | issue=6 | at=L6 | year=2014 | arxiv=1407.0251 | bibcode=2014A&A...567L...6D | doi=10.1051/0004-6361/201424339 }}</ref> <ref name="Sing2011">{{cite journal | title=Gran Telescopio Canarias OSIRIS transiting exoplanet atmospheric survey: detection of potassium in XO-2b from narrowband spectrophotometry | url=https://www.aanda.org/articles/aa/full_html/2011/03/aa15579-10/aa15579-10.html | last1=Sing | first1=D. K. | last2=Désert | first2=J.-M. | last3=Fortney | first3=J. J. | last4=Lecavelier Des Etangs | first4=A. | last5=Ballester | first5=G. E. | last6=Cepa | first6=J. | last7=Ehrenreich | first7=D. | last8=López-Morales | first8=M. | last9=Pont | first9=F. | last10=Shabram | first10=M. | last11=Vidal-Madjar | first11=A. | display-authors=1 | journal=Astronomy and Astrophysics | volume=527 | at=A73 | year=2011 | arxiv=1008.4795 | bibcode=2011A&A...527A..73S | doi=10.1051/0004-6361/201015579 }}</ref>


}} }}

Revision as of 18:17, 28 January 2018

XO-2
Observation data
Epoch 2000      Equinox 2000
Constellation Lynx
XO-2S
Right ascension 07 48 07.4814
Declination +50° 13′ 03.254″
Apparent magnitude (V) 11.12±0.03
XO-2N
Right ascension 07 48 06.468
Declination +50° 13′ 32.96″
Apparent magnitude (V) 11.18±0.03
Characteristics
Spectral type K0V + K0V
Astrometry
Proper motion (μ) RA: -34.7 ± 2.6 mas/yr
Dec.: -153.6 ± 2.4 mas/yr
Parallax (π)6.68 ± 0.23 mas
Distance490 ± 20 ly
(150 ± 5 pc)
Details
XO-2S
Mass0.982 ± 0.034 M☉
Radius1.02 R☉
Temperature5399 ± 55  K
Metallicity 0.39 ± 0.05 dex
Age7.1 ±
−2.9 Gyr
XO-2N
Mass0.971 ± 0.034 M☉
Radius0.976
−0.016 R☉
Temperature5340 ± 32 K
Metallicity 0.44 ± 0.02 dex
Age6.3 ± 2.4 Gyr
Other designations
XO-2S: LSPM J0748+5013S, TYC 3413-210-1, GSC 03413-00210, 2MASS J07480748+5013032
XO-2N: LSPM J0748+5013N, TYC 3413-5-1, GSC 03413-00005, 2MASS J07480647+5013328
Database references
SIMBADXO-2S
XO-2N

XO-2 Is a binary star. It consists of two components: XO-2S (Also known as XO-2A) and XO-2N (Also known as XO-2B).

This system is located approximately 490 light-years away from Earth in the Lynx constellation. Both of these stars are slightly cooler than the Sun and are nearly identical to each other. The system has a magnitude of 11 and cannot be seen with the naked eye but is visible through a small telescope. These stars are also notable for their large proper motions.

XO-2N and XO-2S have a separation of approximately 4,600 AU.

Planetary systems

One known exoplanet, XO-2Nb (or rarely XO-2Bb), which is classified as a hot Jupiter, was discovered by the XO Telescope using the transit method orbiting XO-2N (XO-2B) in 2007.

Two planets were reported to orbit around XO-2S in 2014 using radial velocity method. One of them is Jupiter-mass and another has a mass comparable to Saturn.

Both stars also show RV-trends, which may indicate the presence of additional long-periodic jovians or brown dwarfs around each of them.

The XO-2S planetary system
Companion
(in order from star) 		Mass Semimajor axis
(AU) 		Orbital period
(days) 		Eccentricity Inclination Radius
b ≥ 0.259 ± 0.014 MJ 0.1344 ±0.0025 18.157 ± 0.034 0.18 ± 0.035 — —
c ≥ 1.37 ± 0.053 MJ 0.4756 ±0.0087 120.8 ± 0.034 0.1528 ± 0.01 — —
The XO-2N planetary system
Companion
(in order from star) 		Mass Semimajor axis
(AU) 		Orbital period
(days) 		Eccentricity Inclination Radius
b 0.62 ± 0.02 MJ 0.0369 ±0.002 2.61586178 ± 0.00000075 0.045 ± 0.024 88.7 ± 1.3° 0.973 ± 0.03 RJ

See also

References

  1. Roman, Nancy G. (1987). "Identification of a Constellation From a Position". Publications of the Astronomical Society of the Pacific. 99 (617): 695–699. Bibcode:1987PASP...99..695R. doi:10.1086/132034. Vizier query form
  2. ^ Brown, A. G. A; et al. (2016). "Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties". Astronomy and Astrophysics. 595. A2. arXiv:1609.04172. Bibcode:2016A&A...595A...2G. doi:10.1051/0004-6361/201629512.Gaia Data Release 1 catalog entry
  3. ^ 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.
  4. ^ Høg, E.; et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27 – L30. Bibcode:2000A&A...355L..27H. doi:10.1888/0333750888/2862. Vizier catalog entry
  5. ^ Desidera, S.; et al. (2014). "The GAPS programme with HARPS-N at TNG. IV. A planetary system around XO-2S". Astronomy and Astrophysics. 567 (6). L6. arXiv:1407.0251. Bibcode:2014A&A...567L...6D. doi:10.1051/0004-6361/201424339.
  6. ^ Fernandez, Jose M.; et al. (2009). "The Transit Light Curve Project. XII. Six Transits of the Exoplanet XO-2b". The Astronomical Journal. 137 (6): 4911–4916. arXiv:0903.2687. Bibcode:2009AJ....137.4911F. doi:10.1088/0004-6256/137/6/4911.
  7. ^ "TYC 3413-210-1". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-01-28.
  8. ^ "TYC 3413-5-1". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-01-28.
  9. Narita, Norio; et al. (2011). "XO-2b: a Prograde Planet with a Negligible Eccentricity and an Additional Radial Velocity Variation". Publications of the Astronomical Society of Japan. 63 (6): L67 – L71. arXiv:1110.6136. Bibcode:2011PASJ...63L..67N. doi:10.1093/pasj/63.6.l67.
  10. Sing, D. K.; et al. (2011). "Gran Telescopio Canarias OSIRIS transiting exoplanet atmospheric survey: detection of potassium in XO-2b from narrowband spectrophotometry". Astronomy and Astrophysics. 527. A73. arXiv:1008.4795. Bibcode:2011A&A...527A..73S. doi:10.1051/0004-6361/201015579.

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