HD 132563

HD 132563 is a triple star system in the constellation Boötes. The two resolvable components of this system are designated HD 132563A and HD 132563B. The primary star, HD 132563A, is actually a spectroscopic binary with a period of more than 15 years and an orbital eccentricity of greater than 0.65. The smaller member of this tightly orbiting pair has about 55% the mass of the Sun.[1]

HD 132563
Observation data
Epoch J2000      Equinox J2000
Constellation Boötes
A
Right ascension  14h 58m 21.519s[1]
Declination +44° 02′ 35.33″[1]
Apparent magnitude (V) 8.966[2]
B
Right ascension  14h 58m 21.180s[1]
Declination +44° 02′ 35.87″[1]
Apparent magnitude (V) 9.472[2]
Characteristics
Spectral type F8 V/G0 V[1][3]
B−V color index 0.560[2]
Astrometry
Radial velocity (Rv)−6.5 ± 1.0[1] km/s
Proper motion (μ) RA: −59.86[4] mas/yr
Dec.: −70.12[4] mas/yr
Parallax (π)10.41 ± 1.45[4] mas
Distanceapprox. 310 ly
(approx. 100 pc)
Absolute magnitude (MV)4.05/4.56[1]
Orbit[1]
Period (P)47 yr
Semi-major axis (a)14.8 AU
Eccentricity (e)0.860
Periastron epoch (T)B 2012.34
Argument of periastron (ω)
(secondary)		160.2°
Details
HD 132563 A
Mass1.081±0.010[1] M☉
Surface gravity (log g)4.15[2] cgs
Temperature6168±100[2] K
Metallicity [Fe/H]−0.18±0.10[2] dex
Rotational velocity (v sin i)2.0±0.8[1] km/s
Age~5[1] Gyr
HD 132563 B
Mass1.010±0.010[1] M☉
Surface gravity (log g)4.27[2] cgs
Temperature5985±100[2] K
Metallicity [Fe/H]−0.19±0.10[2] dex
Rotational velocity (v sin i)1.5±0.5[1] km/s
Other designations
BD+44 2408, HIP 73261, SAO 45312[5]
Database references
SIMBADdata

Based upon radial velocity variations of HD 132563B, the presence of an ordinary giant planet has been inferred by S. Desidera et al. (2011). This object is orbiting the star with a period of 1,544 days, at a distance of about 2.6 AU, and with an orbital eccentricity of 0.22.[1]

The HD 132563 planetary system[1]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b ≥1.49 ± 0.09 MJ 2.62 ± 0.04 1544 ± 34 0.22 ± 0.09 — —

References
  1. Desidera, S.; et al. (July 5, 2011), A giant planet in the triple system HD132563, arXiv:1107.0918, Bibcode:2011A&A...533A..90D, doi:10.1051/0004-6361/201117191
  2. Desidera, S.; et al. (June 2004). "Abundance difference between components of wide binaries". Astronomy and Astrophysics. 420: 683–697. arXiv:astro-ph/0403051. Bibcode:2004A&A...420..683D. doi:10.1051/0004-6361:20041242.
  3. A Modern Mean Stellar Color and Effective Temperatures (Teff) # Sequence for O9V-Y0V Dwarf Stars, E. Mamajek, 2011, website
  4. van Leeuwen, F. (November 2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.
  5. "IDS 14548+4427". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2011-07-14.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.