HD 175167 b
Discovery[1]
Discovered byArriagada et al.
Discovery siteLas Campanas Observatory
Discovery dateJanuary 26, 2010
Doppler spectroscopy
Orbital characteristics
2.438+0.064
−0.071 AU[2]
Eccentricity0.529±0.002[3]
1275.8±0.4 d[3]
3.493±0.001 y
20.3
Inclination38.6°±1.7°[3]
2456171+16
−21[2]
343.4°+5.2°
−4.2°[2]
Semi-amplitude148.3±4.1 m/s[4]
StarHD 175167
Physical characteristics
Mass10.2±0.4 MJ[3]

    HD 175167 b is an exoplanet orbiting HD 175167, which is a G type star within the Pavo constellation 232 light-years away from the Earth. The planet was discovered by the Magellan Planet Search Program as the astronomical object fit the Keplerian orbital model. During the observations 13 doppler velocity tests were conducted, which showed this object's mass was at least 7.8 Jovian-masses and its orbit has a high eccentricity. The exoplanet takes 3.53 years to complete a full stellar orbit.[5][1][6]

    An astrometric measurement of the planet's inclination and true mass was published in 2022 as part of Gaia DR3.[7] A number of subsequent studies in 2022 and 2023 have determined astrometric orbits for HD 175167 b,[2] estimating masses ranging from 6.4 MJ[8] to 15 MJ,[9][4] the latter of which would put it at the borderline of being a brown dwarf. The most recent and accurate mass measurement is 10 MJ, making it a massive super-Jovian planet.[3]

    See also

    References

    1. 1 2 Pamela Arriagada; Paul Butler; Dante Minniti; Mercedes Lopez-Morales; Shectman; Adams; Boss; Chambers (2010). "Five Long-period Extrasolar Planets in Eccentric orbits from the Magellan Planet Search Program". The Astrophysical Journal. 711 (2): 1229–1235. arXiv:1001.4093. Bibcode:2010ApJ...711.1229A. doi:10.1088/0004-637X/711/2/1229. S2CID 118682009.
    2. 1 2 3 4 Xiao, Guang-Yao; Liu, Yu-Juan; et al. (May 2023). "The Masses of a Sample of Radial-Velocity Exoplanets with Astrometric Measurements". Research in Astronomy and Astrophysics. 23 (5): 055022. arXiv:2303.12409. Bibcode:2023RAA....23e5022X. doi:10.1088/1674-4527/accb7e. S2CID 257663647.
    3. 1 2 3 4 5 Gan, Tianjun (October 2023). "Gaia Astrometry and MIKE+PFS Doppler Data Joint Analysis Reveals that HD 175167b is a Massive Cold Jupiter". Research Notes of the AAS. 7 (10): 226. arXiv:2310.14568. Bibcode:2023RNAAS...7..226G. doi:10.3847/2515-5172/ad0643.
    4. 1 2 Unger, N.; Ségransan, D.; et al. (October 2023). "Exploring the Brown Dwarf Desert with Precision Radial Velocities and Gaia DR3 Astrometric Orbits". Astronomy & Astrophysics. arXiv:2310.02758. doi:10.1051/0004-6361/202347578. S2CID 263622019.
    5. ↑ "HD 175167". Exoplanets. Archived from the original on 2012-06-04. Retrieved 2010-02-12.
    6. ↑ "Planet : HD 175167 b". Extrasolar Planets Encyclopaedia. Retrieved 2010-02-12.
    7. ↑ Gaia Collaboration; et al. (June 2023). "Gaia Data Release 3: Stellar multiplicity, a teaser for the hidden treasure". Astronomy & Astrophysics. 674: A34. arXiv:2206.05595. Bibcode:2023A&A...674A..34G. doi:10.1051/0004-6361/202243782.
    8. ↑ Feng, Fabo; Butler, R. Paul; et al. (August 2022). "3D Selection of 167 Substellar Companions to Nearby Stars". The Astrophysical Journal Supplement Series. 262 (21): 21. arXiv:2208.12720. Bibcode:2022ApJS..262...21F. doi:10.3847/1538-4365/ac7e57. S2CID 251864022.
    9. ↑ Winn, Joshua N. (September 2022). "Joint Constraints on Exoplanetary Orbits from Gaia DR3 and Doppler Data". The Astronomical Journal. 164 (5): 196. arXiv:2209.05516. Bibcode:2022AJ....164..196W. doi:10.3847/1538-3881/ac9126. S2CID 252211643.
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