Multiple star system in the constellation Aquarius
HD 222582 is a multiple star system in the equatorial constellation of Aquarius . It is invisible to the naked eye with an apparent visual magnitude of 7.7,[ 2] [ 12] light years from the Sun based on parallax ,[ 1] radial velocity of +12 km/s.[ 6] ecliptic that it is subject to lunar occultations .[ 13]
The primary member of this system, designated component A, is an ordinary G-type main-sequence star with a stellar classification of G5V.[ 3] solar twin .[ 14] [ 4] [ 9] inactive chromosphere [ 14] projected rotational velocity of 1.7 km/s.[ 9] [ 7] metallicity [ 4] photosphere at an effective temperature of 5,790 K.[ 4]
Component B of this system is a close binary [ 15] [ 16] [ 5] [ 10]
Planetary system
In November 1999, a dense superjovian planet was announced orbiting the primary by the California and Carnegie Planet Search . Designated component 'b', it was discovered using the radial velocity method , using 24 observations over a period of 1.5 years. The exoplanet is orbiting with a period of 1.57 years and a very large eccentricity of 0.76, ranging in distance from [ 17] [ 18]
See also
References
^ a b c d e Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties" . Astronomy and Astrophysics . 674 : A1. arXiv :2208.00211 Bibcode :2023A&A...674A...1G . doi :10.1051/0004-6361/202243940 S2CID 244398875 . Gaia DR3 record for this source at VizieR .^ a b c Fuhrmann, Klaus (February 2008). "Nearby stars of the Galactic disc and halo - IV" . Monthly Notices of the Royal Astronomical Society 384 (1): 173– 224. Bibcode :2008MNRAS.384..173F . doi :10.1111/j.1365-2966.2007.12671.x ^ a b Houk, N.; Swift, C. (1999). "Michigan catalogue of two-dimensional spectral types for the HD Stars". Michigan Spectral Survey . 5 . Bibcode :1999MSS...C05....0H . ^ a b c d e f g h Lorenzo-Oliveira, Diego; et al. (November 2018). "The Solar Twin Planet Search. The age-chromospheric activity relation". Astronomy & Astrophysics . 619 : 10. arXiv :1806.08014 Bibcode :2018A&A...619A..73L . doi :10.1051/0004-6361/201629294 . S2CID 118995412 . A73. ^ a b c Montes, D.; et al. (September 2018). "Calibrating the metallicity of M dwarfs in wide physical binaries with F-, G-, and K-primaries - I: High-resolution spectroscopy with HERMES: stellar parameters, abundances, and kinematics" . Monthly Notices of the Royal Astronomical Society . 479 (1): 1332– 1382. arXiv :1805.05394 Bibcode :2018MNRAS.479.1332M . doi :10.1093/mnras/sty1295 S2CID 119260219 . ^ a b Soubiran, C.; et al. (2018). "Gaia Data Release 2. The catalogue of radial velocity standard stars". Astronomy and Astrophysics . 616 : A7. arXiv :1804.09370 Bibcode :2018A&A...616A...7S . doi :10.1051/0004-6361/201832795 . S2CID 52952408 . ^ a b c Soto, M. G.; Jenkins, J. S. (July 2018). "Spectroscopic Parameters and atmosphEric ChemIstriEs of Stars (SPECIES). I. Code description and dwarf stars catalogue". Astronomy & Astrophysics . 615 : 28. arXiv :1801.09698 Bibcode :2018A&A...615A..76S . doi :10.1051/0004-6361/201731533 . S2CID 119107228 . A76. ^ 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 .^ a b c dos Santos, Leonardo A.; et al. (August 2016). "The Solar Twin Planet Search. IV. The Sun as a typical rotator and evidence for a new rotational braking law for Sun-like stars". Astronomy & Astrophysics . 592 : 8. arXiv :1606.06214 Bibcode :2016A&A...592A.156D . doi :10.1051/0004-6361/201628558 . S2CID 53533614 . A156. ^ a b "HD 222582" . Open Exoplanet Catalogue . Retrieved 2020-12-31 .^ "HD 222582" . SIMBAD Centre de données astronomiques de Strasbourg . Retrieved 2020-12-31 .^ "The astronomical magnitude scale" . International Comet Quarterly . Retrieved 2020-12-31 .^ Richichi, A. (January 2003). "Lunar occultations of stars with exoplanet candidates" . Astronomy and Astrophysics . 397 (3): 1123– 1127. Bibcode :2003A&A...397.1123R . doi :10.1051/0004-6361:20021585 ^ a b Reddy, Arumalla B. S.; Lambert, David L. (August 2017). "Solar Twins and the Barium Puzzle" . The Astrophysical Journal . 845 (2): 14. arXiv :1707.07051 Bibcode :2017ApJ...845..151R . doi :10.3847/1538-4357/aa81d6 S2CID 119232784 . 151. ^ Riddle, Reed L.; et al. (2015). "A Survey of the High Order Multiplicity of Nearby Solar-type Binary Stars with Robo-AO". The Astrophysical Journal . 799 (1). 4. arXiv :1411.0682 Bibcode :2015ApJ...799....4R . doi :10.1088/0004-637X/799/1/4 . S2CID 5642378 . ^ Raghavan, Deepak; et al. (2006). "Two Suns in the Sky: Stellar Multiplicity in Exoplanet Systems". The Astrophysical Journal . 646 (1): 523– 542. arXiv :astro-ph/0603836 Bibcode :2006ApJ...646..523R . doi :10.1086/504823 . S2CID 5669768 . ^ "Astronomers discover six new planets orbiting nearby stars" (Press release). Kamuela, Hawaii: W. M. Keck Observatory. November 1, 1999. Retrieved December 19, 2017 .^ Vogt, Steven S.; et al. (2000). "Six New Planets from the Keck Precision Velocity Survey". The Astrophysical Journal . 536 (2): 902– 914. arXiv :astro-ph/9911506 Bibcode :2000ApJ...536..902V . doi :10.1086/308981 . S2CID 119375519 . ^ "HD 222582 b" . Exoplanet Catalogue . NASA Astrophysics Division. Retrieved 2020-12-31 .
External links
