| Revision as of 13:34, 14 March 2019 editCitation bot (talk | contribs)Bots5,408,808 editsm Removed URL that duplicated unique identifier. | You can use this bot yourself. Report bugs here. | User-activated.← Previous edit | Revision as of 12:46, 9 June 2019 edit undoSpaceImplorerExplorerImplorer (talk | contribs)Extended confirmed users2,858 editsm Added exoplanet XO-2NcNext edit → | ||
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| ==Planetary systems== | ==Planetary systems== | ||
| There are two known ] orbiting XO-2N. ] (or rarely XO-2Bb), which is classified as a ], was discovered by the ] using the ] orbiting XO-2N (XO-2B) in 2007.<ref name="Burke2007" /> and XO-2Nc was discovered in 2015 using the ].<ref name ="Damasso et al"/><ref name="Simbad XO-2c"/> | |||
| 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.<ref name="Desidera2014" /> | 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.<ref name="Desidera2014" /> | ||
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| | eccentricity = 0.045 ± 0.024 | | eccentricity = 0.045 ± 0.024 | ||
| | inclination = 88.7 ± 1.3 | | inclination = 88.7 ± 1.3 | ||
| }} | |||
| {{OrbitboxPlanet | |||
| | exoplanet = c | |||
| | mass = 1.8 | |||
| | period = >6200 | |||
| }} | }} | ||
| {{Orbitbox end}} | {{Orbitbox end}} | ||
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| <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="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="Simbad XO-2c">{{cite simbad | title=XO-2c |accessdate=2019-06-09}}</ref> | |||
| <ref name="Damasso et al">{{cite journal | title=A comprehensive analysis of the XO-2 stellar and planetary systems | last1=Damasso | first1=M. | last2=Biazzo | first2=K. | last3=Bonomo | first3=A. S. | last4=Desidera | first4=S. | last5=Lanza | first5=A. F. | last6=Nascimbeni | first6=V. | last7=Esposito | first7=M. | last8=Scandariato | first8=G. | last9=Sozzetti | first9=A. | last10=Cosentino | first10=R. | last11=Gratton | first11=R. | last12=Malavolta | first12=L. | last13=Rainer | first13=M. | last14=Gandolfi | first14=D. | last15=Poretti | first15=E. | last16=Zanmar Sanchez | first16=R. | last17=Ribas | first17=I. | last18=Santos | first18=N. | last19=Affer | first19=L. | last20=Andreuzzi | first20=G. | last21=Barbieri | first21=M. | last22=Bedin | first22=L. R. | last23=Benatti | first23=S. | last24=Bernagozzi | first24=A. | last25=Bertolini | first25=E. | last26=Bonavita | first26=M. | last27=Borsa | first27=F. | last28=Borsato | first28=L. | last29=Boschin | first29=W. | last30=Calcidese | first30=P. | last31=Carbognani | first31=A. | last32=Cenadelli | first32=D. | last33=Christille | first33=J. M. | last34=Claudi | first34=R. U. | last35=Covino | first35=E. | last36=Cunial | first36=A. | last37=Giacobbe | first37=P. | last38=Granata | first38=V. | last39=Harutyunyan | first39=A. | last40=Lattanzi | first40=M. G. | last41=Leto | first41=G. | last42=Libralato | first42=M. | last43=Lodato | first43=G. | last44=Lorenzi | first44=V. | last45=Mancini | first45=L. | last46=Martinez Fiorenzano | first46=A. F. | last47=Marzari | first47=F. | last48=Masiero | first48=S. | last49=Micela | first49=G. | last50=Molinari | first50=E. | last51=Molinaro | first51=M. | last52=Munari | first52=U. | last53=Murabito | first53=S. | last54=Pagano | first54=I. | last55=Pedani | first55=M. | last56=Piotto | first56=G. | last57=Rosenberg | first57=A. | last58=Silvotti | first58=R. | last59=Southworth | first59=J. | display-authors=1 | journal=Astronomy & Astrophysics | volume=575 | at=A111 | year=2015 | doi=10.1051/0004-6361/201425332 }}</ref> | |||
| }} | }} | ||
Revision as of 12:46, 9 June 2019
| Observation data Epoch 2000 Equinox 2000 | |
|---|---|
| Constellation | Lynx |
| XO-2S | |
| Right ascension | 07 48 07.4814 |
| Declination | +50° 13′ 03.2578″ |
| Apparent magnitude (V) | 11.12±0.03 |
| XO-2N | |
| Right ascension | 07 48 06.4726 |
| Declination | +50° 13′ 32.9211″ |
| Apparent magnitude (V) | 11.18±0.03 |
| Characteristics | |
| Spectral type | K0V + K0V |
| Astrometry | |
| XO-2S | |
| Proper motion (μ) | RA: −29.317±0.063 mas/yr Dec.: −154.398±0.044 mas/yr |
| Parallax (π) | 6.5765 ± 0.0411 mas |
| Distance | 496 ± 3 ly (152.1 ± 1.0 pc) |
| XO-2N | |
| Proper motion (μ) | RA: −29.731±0.083 mas/yr Dec.: −154.272±0.050 mas/yr |
| Parallax (π) | 6.4539 ± 0.0603 mas |
| Distance | 505 ± 5 ly (155 ± 1 pc) |
| Details | |
| XO-2S | |
| Mass | 0.982 ± 0.034 M☉ |
| Radius | 1.02 R☉ |
| Temperature | 5399 ± 55 K |
| Metallicity | 0.39 ± 0.05 dex |
| Age | 7.1 ± −2.9 Gyr |
| XO-2N | |
| Mass | 0.971 ± 0.034 M☉ |
| Radius | 0.976 −0.016 R☉ |
| Temperature | 5340 ± 32 K |
| Metallicity | 0.44 ± 0.02 dex |
| Age | 6.3 ± 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 | |
| SIMBAD | XO-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 500 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
There are two known exoplanets orbiting XO-2N. 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. and XO-2Nc was discovered in 2015 using the radial velocity method.
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.
| 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 | — | — |
| 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 |
| c | 1.8 MJ | — | >6200 | — | — | — |
See also
References
- 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
- ^ Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- ^ 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.
- ^ Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
- ^ 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.
- ^ 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.
- ^ "TYC 3413-210-1". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-01-28.
- ^ "TYC 3413-5-1". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-01-28.
- Damasso, M.; et al. (2015). "A comprehensive analysis of the XO-2 stellar and planetary systems". Astronomy & Astrophysics. 575. A111. doi:10.1051/0004-6361/201425332.
- "XO-2c". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-06-09.
- 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.
- 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.
External links
- NASA PlanetQuest: Planet race heats up: 1 month, 32 discoveries
- "XO-2". Exoplanets. Retrieved 2009-04-28.
