TZ Arietis
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Aries |
| Right ascension | 02h 00m 12.959s[1] |
| Declination | +13° 03′ 07.01″[1] |
| Apparent magnitude (V) | 12.298[2] |
| Characteristics | |
| Spectral type | M4.5 V[3] |
| U−B color index | +1.37[4] |
| B−V color index | +1.80[4] |
| R−I color index | 1.39 |
| Variable type | Flare star |
| Astrometry | |
| Proper motion (μ) | RA: +1092.0[1] mas/yr Dec.: –1772.9[1] mas/yr |
| Parallax (π) | 224.8 ± 2.9 mas[5] |
| Distance | 14.5 ± 0.2 ly (4.45 ± 0.06 pc) |
| Details | |
| Luminosity (bolometric) | 0.00135[6] L☉ |
| Rotational velocity (v sin i) | 3.8[6] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
L 1159-16 is a red dwarf in the northern constellation of Aries. With an apparent visual magnitude of 12.298,[2] it is too faint to be seen by the naked eye, although it lies relatively close to the Sun at a distance of about 14.5 light-years (4.4 parsecs).[5] It is a flare star, which means it can suddenly increase in brightness for short periods of time.
See also
References
- ^ a b c d Zacharias, N.; et al. (2003), "The Second U.S. Naval Observatory CCD Astrograph Catalog (UCAC2)", CDS/ADC Collection of Electronic Catalogues, vol. 1289, Bibcode:2003yCat.1289....0Z.
- ^ a b Landolt, Arlo U. (July 1992), "UBVRI photometric standard stars in the magnitude range 11.5-16.0 around the celestial equator", Astronomical Journal, 104 (1): 340–371, 436–491, Bibcode:1992AJ....104..340L, doi:10.1086/116242.
- ^ Riaz, Basmah; Gizis, John E.; Harvin, James (August 2006), "Identification of New M Dwarfs in the Solar Neighborhood", The Astronomical Journal, 132 (2): 866–872, arXiv:astro-ph/0606617, Bibcode:2006AJ....132..866R, doi:10.1086/505632.
- ^ a b Nicolet, B. (1978), "Photoelectric photometric Catalogue of homogeneous measurements in the UBV System", Astronomy and Astrophysics Supplement Series, 34: 1–49, Bibcode:1978A&AS...34....1N.
- ^ a b Van Altena W. F.; Lee J. T.; Hoffleit E. D. (1995). "GCTP 412.02". The General Catalogue of Trigonometric Stellar Parallaxes (Fourth ed.). Retrieved 2014-10-22.
- ^ a b McLean, M.; Berger, E.; Reiners, A. (February 2012), "The Radio Activity-Rotation Relation of Ultracool Dwarfs", The Astrophysical Journal, 746 (1): 23, arXiv:1108.0415, Bibcode:2012ApJ...746...23M, doi:10.1088/0004-637X/746/1/23.
- ^ "TZ Ari -- Flare Star", SIMBAD Astronomical Database, Centre de Données astronomiques de Strasbourg, retrieved 2012-08-18.
- Harrington, R. S.; Dahn, C. C. (April 1980), "Summary of U.S. Naval Observatory parallaxes", Astronomical Journal, 85: 454–465, Bibcode:1980AJ.....85..454H, doi:10.1086/112696.
- Riaz, Basmah; Gizis, John E.; Harvin, James (2006). "Identification of New M Dwarfs in the Solar Neighborhood". The Astronomical Journal. 132 (2): 866–872. arXiv:astro-ph/0606617. Bibcode:2006AJ....132..866R. doi:10.1086/505632. Table 1.
- Dittmann, Jason A.; Irwin, Jonathan M.; Charbonneau, David; Berta-Thompson, Zachory K. (2014). "Trigonometric Parallaxes for 1507 Nearby Mid-to-late M Dwarfs". The Astrophysical Journal. 784 (2): 156. arXiv:1312.3241. Bibcode:2014ApJ...784..156D. doi:10.1088/0004-637X/784/2/156. Table with parallaxes.
Notes
External links
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