Tau6 Eridani
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Eridanus |
| Right ascension | 03h 46m 50.88819s[1] |
| Declination | −23° 14′ 59.0046″[1] |
| Apparent magnitude (V) | 4.22[2] |
| Characteristics | |
| Spectral type | F5IV-V[3] |
| U−B color index | −0.03[2] |
| B−V color index | +0.43[2] |
| Astrometry | |
| Radial velocity (Rv) | 8.0±0.8[4] km/s |
| Proper motion (μ) | RA: −158.84[1] mas/yr Dec.: −528.95[1] mas/yr |
| Parallax (π) | 56.73 ± 0.19[1] mas |
| Distance | 57.5 ± 0.2 ly (17.63 ± 0.06 pc) |
| Details | |
| Mass | 1.35[4] M☉ |
| Radius | 1.6[5] R☉ |
| Surface gravity (log g) | 4.21±0.13[4] cgs |
| Temperature | 6,508±82[4] K |
| Metallicity [Fe/H] | −0.03±0.11[4] dex |
| Rotational velocity (v sin i) | 16.25[6] km/s |
| Age | 2.0[4] Gyr |
| Other designations | |
Tau6 Eridani (τ6 Eri) is a star in the constellation Eridanus. It has an apparent visual magnitude of 4.22,[2] which is bright enough to be seen with the naked eye. Based upon parallax measurements, the distance to this star is around 57.5 light years.[1]
The spectrum of Tau6 Eridani matches a stellar classification of F5IV-V,[3] indicating it is an F-type star that shows traits of both a main sequence star and a subgiant. It has an estimated 135%[4] of the Sun's mass and about 1.6 time the radius of the Sun.[5] The effective temperature of the outer atmosphere is 6,508 K[4] and it does not display any surface magnetic activity.[6] The star has been examined for infrared excess emission that could indicate the presence of circumstellar matter, but none has been detected.[8]
References
- 1 2 3 4 5 6 van Leeuwen, F. (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. - 1 2 3 4 Mermilliod, J.-C. (1986), Compilation of Eggen's UBV data, transformed to UBV (unpublished), SIMBAD, Bibcode:1986EgUBV........0M.
- 1 2 Gray, R. O.; et al. (July 2006), "Contributions to the Nearby Stars (NStars) Project: spectroscopy of stars earlier than M0 within 40 pc-The Southern Sample", The Astronomical Journal, 132 (1): 161–170, arXiv:astro-ph/0603770, Bibcode:2006AJ....132..161G, doi:10.1086/504637.
- 1 2 3 4 5 6 7 8 Kordopatis, G.; et al. (November 2013), "The Radial Velocity Experiment (RAVE): Fourth Data Release", The Astronomical Journal, 146 (5): 36, arXiv:1309.4284, Bibcode:2013AJ....146..134K, doi:10.1088/0004-6256/146/5/134, 134.
- 1 2 Pasinetti Fracassini, L. E.; et al. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition - Comments and statistics", Astronomy and Astrophysics, 367 (2): 521–524, arXiv:astro-ph/0012289, Bibcode:2001A&A...367..521P, doi:10.1051/0004-6361:20000451.
- 1 2 Martínez-Arnáiz, R.; et al. (September 2010), "Chromospheric activity and rotation of FGK stars in the solar vicinity. An estimation of the radial velocity jitter", Astronomy and Astrophysics, 520: A79, arXiv:1002.4391, Bibcode:2010A&A...520A..79M, doi:10.1051/0004-6361/200913725.
- ↑ "tau06 Eri -- High proper-motion Star", SIMBAD Astronomical Database, Centre de Données astronomiques de Strasbourg, retrieved 2016-10-13.
- ↑ Weinberger, Alycia J.; et al. (February 2015), "Target Selection for the LBTI Exozodi Key Science Program", The Astrophysical Journal Supplement Series, 216 (2): 8, arXiv:1501.01319, Bibcode:2015ApJS..216...24W, doi:10.1088/0067-0049/216/2/24, 24.