HR 6094
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It has been suggested that this article be merged with HD 147513. (Discuss) Proposed since September 2012. |
| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Scorpius |
| Right ascension | 16h 24m 01.2899s[1] |
| Declination | –39° 11′ 34.729″[1] |
| Apparent magnitude (V) | 5.376[2] |
| Characteristics | |
| Spectral type | G5V |
| U−B color index | +0.13[3] |
| B−V color index | +0.62[3] |
| Astrometry | |
| Radial velocity (Rv) | 10.1[4] km/s |
| Proper motion (μ) | RA: 72.64[1] mas/yr Dec.: 3.41[1] mas/yr |
| Parallax (π) | 77.69 ± 0.86[1] mas |
| Distance | 42.0 ± 0.5 ly (12.9 ± 0.1 pc) |
| Details | |
| Surface gravity (log g) | 4.50[5] |
| Temperature | 5,858[5] K |
| Metallicity [Fe/H] | 0.03[5] dex |
| Rotation | 8.5 days[6] |
| Rotational velocity (v sin i) | 1.55[7] km/s |
| Age | 0.3[8] Gyr |
| Other designations | |
HR 6094 (62 G. Scorpii) is a binary star system located 42.0 light years (12.9 parsecs) from Earth in the constellation Scorpius. The star system comprises two stars that have an observed separation of 5360 AU.[8]
Component A [edit]
Component A is a sun like star of spectral class G3-5 and luminosity class V, an apparent visual magnitude of +5.39 and an absolute visual magnitude of +4.84. The visual luminosity of star A is 1.01 × the sun and it has a diameter of 1.08 Sol.
This star is a member of the Ursa Major moving group of stars that share a common proper motion through space. The atmosphere of the star is enriched in barium and deficient in carbon. This change in composition occurred when the companion passed through the asymptotic giant branch and contaminated this star's photosphere.[8]
The habitable zone for an Earthlike planet round this star would locate around 1.00 A.U.s from the star and star B would appear as magnitude -2.85 object.
An extrasolar planet, designated HD 147513 Ab, which is at least as large as Jupiter, orbits component A in a highly eccentric orbit at a mean distance of 1.26AU. It was discovered on 18 June 2002.[9]
Component B [edit]
Component B is a star of spectral class of DA2. It has an apparent visual magnitude of +11.00. The habitable zone for an Earth-type planet round this star would be 0.076 A.U.s. and star A would appear as a magnitude -8.46 object.[citation needed]
References [edit]
- ^ a b c d e Perryman, M. A. C.; et al. (April 1997). "The HIPPARCOS Catalogue". Astronomy & Astrophysics 323: L49–L52. Bibcode:1997A&A...323L..49P.
- ^ a b "HD 147513 -- Pre-main sequence Star". SIMBAD. Centre de Données astronomiques de Strasbourg. Retrieved 2010-07-01.
- ^ a b Corben, P. M.; Carter, B. S.; Banfield, R. M.; Harvey, G. M. (1972). "UBV Photometry of 500 Southern Stars [erratum: 1973MNSSA..32...48C]". Monthly Notes of the Astronomical Society of Southern Africa 31: 7. Bibcode:1972MNSSA..31....7C.
- ^ Wilson, Ralph Elmer (1953). General Catalogue of Stellar Radial Velocities. Washington: Carnegie Institution of Washington. Bibcode:1953QB901.W495.....
- ^ a b c Sousa, S. G.; et al. (August 2008). "Spectroscopic parameters for 451 stars in the HARPS GTO planet search program. Stellar [Fe/H] and the frequency of exo-Neptunes". Astronomy and Astrophysics 487 (1): 373–381. arXiv:0805.4826. Bibcode:2008A&A...487..373S. doi:10.1051/0004-6361:200809698.
- ^ Maldonado, J. et al. (October 2010), "A spectroscopy study of nearby late-type stars, possible members of stellar kinematic groups", Astronomy and Astrophysics 521: A12, arXiv:1007.1132, Bibcode:2010A&A...521A..12M, doi:10.1051/0004-6361/201014948
- ^ Butler, R. P.; et al. (July 2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal 646 (1): 505–522. arXiv:astro-ph/0607493. Bibcode:2006ApJ...646..505B. doi:10.1086/504701.
- ^ a b c Porto de Mello, G. F.; da Silva, L. "HR 6094: A Young, Solar-Type, Solar-Metallicity Barium Dwarf Star". Astrophysical Journal Letters 476: L89. Bibcode:1997ApJ...476L..89P. doi:10.1086/310504.
- ^ http://solstation.com/stars2/hr6094ab.htm
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