HD 8535
| Observation data EpochJ2000.0EquinoxJ2000.0 | |
|---|---|
| Constellation | Phoenix |
| Right ascension | 01h23m37.23585s[1] |
| Declination | –41° 16′ 11.2795″[1] |
| Apparent magnitude(V) | 7.70[2] |
| Characteristics | |
| Spectral type | G0V[3] |
| Apparent magnitude(B) | 8.22[4] |
| Apparent magnitude(J) | 6.735[5] |
| Apparent magnitude(H) | 6.449[5] |
| Apparent magnitude(K) | 6.354[5] |
| B−Vcolor index | 0.553±0.009[2] |
| Astrometry | |
| Radial velocity(Rv) | +2.51±0.12[1]km/s |
| Proper motion(μ) | RA:+57.795mas/yr[1] Dec.:−69.879mas/yr[1] |
| Parallax(π) | 18.0657 ± 0.0181mas[1] |
| Distance | 180.5 ± 0.2ly (55.35 ± 0.06pc) |
| Absolute magnitude(MV) | 4.10[2] |
| Details[6] | |
| Mass | 1.17±0.02M☉ |
| Radius | 1.18±0.02R☉ |
| Luminosity | 1.85±0.01L☉ |
| Surface gravity(logg) | 4.36±0.02cgs |
| Temperature | 6,200±50K |
| Metallicity[Fe/H] | 0.02dex |
| Rotational velocity(vsini) | 3.07[7]km/s |
| Age | 2.1±0.9Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
HD 8535is astarlocated 181light-years(55parsecs) away from theSunin the southernconstellationofPhoenix.It has a yellow hue and can be viewed using binoculars or a small telescope, having a lowapparent visual magnitudeof 7.70.[2]The star is drifting further away from the Sun with aradial velocityof +2.5 km/s.[1]
This is an ordinaryG-type main-sequence starwith astellar classificationof G0V.[3]Theluminosity classof 'V' indicates the star is generating energy throughcorehydrogen fusion.It is about two[6]billion years old and is spinning slowly with aprojected rotational velocityof 3 km/s.[7]The abundance of elements other than hydrogen and helium in the star – what astronomers termmetallicity– is about the same as in the Sun. It has 17% more mass than the Sun and an 18% greater radius. The star is radiating 1.85 times theluminosity of the Sunfrom itsphotosphereat aneffective temperatureof 6,200 K.[6]
A survey in 2015 has ruled out the existence of any stellar companions at projected distances above 23astronomical units.[9]However, in 2019 awhite dwarfcompanion to this star was found.[10]
Planetary system
[edit]In 2009, agas giantwas found in orbit around the star using theradial velocitymethod. It has anorbital periodof 3.59 years and has at least 68% of the mass of Jupiter.[11]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | ≥0.68+0.07 −0.04MJ |
2.45+0.04 −0.06 |
1,313±28 | 0.15+0.09 −0.05 |
— | — |
See also
[edit]References
[edit]- ^abcdefVallenari, A.; et al. (Gaia collaboration) (2023)."GaiaData 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.S2CID244398875. Gaia DR3 record for this sourceatVizieR.
- ^abcdAnderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation".Astronomy Letters.38(5): 331.arXiv:1108.4971.Bibcode:2012AstL...38..331A.doi:10.1134/S1063773712050015.S2CID119257644.
- ^abHouk, Nancy (1978).Michigan catalogue of two-dimensional spectral types for the HD stars.Vol. 2. Ann Arbor: Dept. of Astronomy, University of Michigan.Bibcode:1978mcts.book.....H.
- ^Høg, E.; et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars".Astronomy and Astrophysics.355:L27.Bibcode:2000A&A...355L..27H.doi:10.1888/0333750888/2862.ISBN978-0333750889.
- ^abcCutri, R. M.; et al. (June 2003).2MASS All Sky Catalog of point sources.NASA/IPAC.Bibcode:2003tmc..book.....C.
- ^abcBonfanti, A.; et al. (2015)."Revising the ages of planet-hosting stars".Astronomy and Astrophysics.575.A18.arXiv:1411.4302.Bibcode:2015A&A...575A..18B.doi:10.1051/0004-6361/201424951.S2CID54555839.
- ^abDelgado Mena, E.; et al. (April 2015). "Li abundances in F stars: planets, rotation, and Galactic evolution".Astronomy & Astrophysics.576:24.arXiv:1412.4618.Bibcode:2015A&A...576A..69D.doi:10.1051/0004-6361/201425433.S2CID56051637.A69.
- ^"HD 8535".SIMBAD.Centre de données astronomiques de Strasbourg.Retrieved2019-11-08.
- ^Mugrauer, M.; Ginski, C. (12 May 2015)."High-contrast imaging search for stellar and substellar companions of exoplanet host stars".Monthly Notices of the Royal Astronomical Society.450(3): 3127–3136.Bibcode:2015MNRAS.450.3127M.doi:10.1093/mnras/stv771.hdl:1887/49340.Retrieved19 June2020.
- ^Mugrauer, M. (December 2019)."Search for stellar companions of exoplanet host stars by exploring the second ESA-Gaia data release".Monthly Notices of the Royal Astronomical Society.490(4): 5088–5102.Bibcode:2019MNRAS.490.5088M.doi:10.1093/mnras/stz2673.
- ^abNaef, Dominique; Mayor, Michel; Lo Curto, Gaspare; Bouchy, François; Lovis, Christophe; Moutou, Claire; Benz, Willy; Pepe, Francesco; Queloz, Didier; Santos, Nuno C.; Ségransan, Damien; Udry, Stéphane; Bonfils, Xavier; Delfosse, Xavier; Forveille, Thierry; Hébrard, Guillaume; Mordasini, Christoph; Perrier, Christian; Boisse, Isabelle; Sosnowska, Danuta (2010)."The HARPS Search for Southern Extrasolar Planets XXIII. 8 Planetary Companions to Low-activity Solar-type Stars".Astronomy and Astrophysics.523:A15.arXiv:1008.4600.Bibcode:2010A&A...523A..15N.doi:10.1051/0004-6361/200913616.S2CID118845989.
