L 1159-16

From Wikipedia, the free encyclopedia
Jump to: navigation, search
L 1159-16
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[5] mas
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
TZ Ari, 2MASS J02001278+1303112, GCTP 412.02, GJ 83.1, Glicas 003-033, LHS 11.[7]

L 1159-16 is a red dwarf star 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 our Sun at a distance of about 14.7 light-years (4.5 parsecs).[8] It is a flare star, which means it can suddenly increase in brightness for short periods of time.

Distance[edit]

L 1159-16 distance estimates

Source Parallax, mas Distance, pc Distance, ly Ref.
Woolley et al. (1970) 213 ± 10 4.69+0.23
−0.21
15.3+0.8
−0.7
[9]
Harrington et al. (1980) 222 ± 5 4.5 ± 0.1 14.7 ± 0.3 [8]
Gliese & Jahreiß (1991) 223.8 ± 2.9 4.47 ± 0.06 14.57 ± 0.19 [10]
van Altena et al. (1995) 224.8 ± 2.9 4.45 ± 0.06 14.51+0.19
−0.18
[5]
RECONS TOP100 (2012) 224.8 ± 2.9[note 1] 4.45 ± 0.06 14.51+0.19
−0.18
[11]

Non-trigonometric distance estimates are marked in italic. The best estimate is marked in bold.

See also[edit]

References[edit]

  1. ^ 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 volume=1289, Bibcode:2003yCat.1289....0Z. 
  2. ^ 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. 
  3. ^ 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. 
  4. ^ 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. 
  5. ^ a b Van Altena W. F., Lee J. T., Hoffleit E. D. (1995). "GCTP 412.02". The General Catalogue of Trigonometric Stellar Parallaxes, Fourth Edition. Retrieved 2014-10-22. 
  6. ^ 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. 
  7. ^ TZ Ari -- Flare Star, SIMBAD Astronomical Database (Centre de Données astronomiques de Strasbourg), retrieved 2012-08-18. 
  8. ^ a b 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. 
  9. ^ Woolley R.; Epps E. A.; Penston M. J.; Pocock S. B. (1970). "Woolley 9066". Catalogue of stars within 25 parsecs of the Sun. Retrieved 2014-10-22. 
  10. ^ Gliese, W. and Jahreiß, H. (1991). "Gl 83.1". Preliminary Version of the Third Catalogue of Nearby Stars. Retrieved 2014-10-22. 
  11. ^ "RECONS TOP100". THE ONE HUNDRED NEAREST STAR SYSTEMS brought to you by RECONS (Research Consortium On Nearby Stars). 2012. Retrieved 2014-10-22. 

Notes[edit]

  1. ^ Parallax from van Altena et al. (1995).

External links[edit]