Based on theoretical modeling in the 2006 discovery paper, this is likely to be a rocky planet, not a gas giant.[1] However, other work has found that if it had formed as a gas giant, it would have stayed that way,[3] and it is now understood that planets this massive are rarely rocky.[4]
If HD 69830 b is a terrestrial planet, models predict that tidal heating would produce a heat flux at the surface of about 55 W/m2. This is 20 times that of Io.[5]
Referencesedit
^ abLovis, Christophe; et al. (2006). (PDF). Nature. 441 (7091): 305–309. arXiv:astro-ph/0703024. Bibcode:2006Natur.441..305L. doi:10.1038/nature04828. PMID 16710412. S2CID 4343578. Archived from the original (PDF) on 2016-03-03. Retrieved 2013-11-22.
^ abcdeLaliotis, Katherine; Burt, Jennifer A.; et al. (February 2023). "Doppler Constraints on Planetary Companions to Nearby Sun-like Stars: An Archival Radial Velocity Survey of Southern Targets for Proposed NASA Direct Imaging Missions". The Astronomical Journal. 165 (4): 176. arXiv:2302.10310. Bibcode:2023AJ....165..176L. doi:10.3847/1538-3881/acc067.
^H. Lammer; et al. (2007). "The impact of nonthermal loss processes on planet masses from Neptunes to Jupiters" (PDF). Geophysical Research Abstracts. 9 (7850).
^Chen, Jingjing; Kipping, David (2017). "Probabilistic Forecasting of the Masses and Radii of Other Worlds". The Astrophysical Journal. 834 (1): 17. arXiv:1603.08614. Bibcode:2017ApJ...834...17C. doi:10.3847/1538-4357/834/1/17. S2CID 119114880.
69830, neptune, mass, super, earth, mass, exoplanet, orbiting, star, 69830, least, times, more, massive, than, earth, also, orbits, very, close, parent, star, takes, days, complete, orbit, discoverydiscovered, lovis, discovery, datemay, 2006detection, methodra. HD 69830 b is a Neptune mass or super Earth mass exoplanet orbiting the star HD 69830 It is at least 10 times more massive than Earth It also orbits very close to its parent star and takes 82 3 days to complete an orbit HD 69830 bDiscoveryDiscovered byC Lovis et al 1 Discovery dateMay 18 2006Detection methodRadial velocityOrbital characteristicsSemi major axis0 0764 0 0017 AU 11 430 000 250 000 km 2 Eccentricity0 128 0 028 2 Orbital period sidereal 8 66897 0 00028 d 2 Time of periastron2 453 496 8 0 06Argument of periastron340 26Semi amplitude3 4 0 1 m s 2 StarHD 69830Physical characteristicsMass 10 1 0 38 0 37 M 2 Temperature 804 KBased on theoretical modeling in the 2006 discovery paper this is likely to be a rocky planet not a gas giant 1 However other work has found that if it had formed as a gas giant it would have stayed that way 3 and it is now understood that planets this massive are rarely rocky 4 If HD 69830 b is a terrestrial planet models predict that tidal heating would produce a heat flux at the surface of about 55 W m2 This is 20 times that of Io 5 References edit a b Lovis Christophe et al 2006 An extrasolar planetary system with three Neptune mass planets PDF Nature 441 7091 305 309 arXiv astro ph 0703024 Bibcode 2006Natur 441 305L doi 10 1038 nature04828 PMID 16710412 S2CID 4343578 Archived from the original PDF on 2016 03 03 Retrieved 2013 11 22 a b c d e Laliotis Katherine Burt Jennifer A et al February 2023 Doppler Constraints on Planetary Companions to Nearby Sun like Stars An Archival Radial Velocity Survey of Southern Targets for Proposed NASA Direct Imaging Missions The Astronomical Journal 165 4 176 arXiv 2302 10310 Bibcode 2023AJ 165 176L doi 10 3847 1538 3881 acc067 H Lammer et al 2007 The impact of nonthermal loss processes on planet masses from Neptunes to Jupiters PDF Geophysical Research Abstracts 9 7850 Chen Jingjing Kipping David 2017 Probabilistic Forecasting of the Masses and Radii of Other Worlds The Astrophysical Journal 834 1 17 arXiv 1603 08614 Bibcode 2017ApJ 834 17C doi 10 3847 1538 4357 834 1 17 S2CID 119114880 Jackson Brian Richard Greenberg Rory Barnes 2008 Tidal Heating of Extra Solar Planets Astrophysical Journal 681 2 1631 arXiv 0803 0026 Bibcode 2008ApJ 681 1631J doi 10 1086 587641 S2CID 42315630 nbsp This extrasolar planet related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title HD 69830 b amp oldid 1187184114, wikipedia, wiki, book, books, library,
