Astronomy:HD 53143

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Short description: Star in the constellation Carina
HD 53143
The 74 exocomet belts imaged by ALMA’s REASONS survey, showing belts of all shapes, sizes and ages (REASONS comboplot full nonames).jpg
A millimetre image of the disk with the REASONS survey[1]
Observation data
{{#ifeq:J2000|J2000.0 (ICRS)|Epoch J2000.0      Equinox J2000.0 (ICRS)| Epoch J2000      [[Astronomy:Equinox (celestial coordinates)|Equinox J2000}}
Constellation Carina[2]
A
Right ascension  06h 59m 59.65505s[3]
Declination −61° 20′ 10.2526″[3]
Apparent magnitude (V) 6.80[4]
B
Right ascension  06h 59m 56.17524s[5]
Declination −61° 44′ 59.8415″[5]
Apparent magnitude (V) {{{appmag_v2}}}
Characteristics
A
Evolutionary stage main sequence[3]
Spectral type G9 V[6]
U−B color index +0.43[6]
B−V color index +0.80[6]
B
Evolutionary stage Red dwarf[7]
Spectral type M5.0[8]
Variable type Flare star[9]
Astrometry
A
Radial velocity (Rv)+21.3[10] km/s
Proper motion (μ) RA: −161.873[3] mas/yr
Dec.: +264.836[3] mas/yr
Parallax (π)54.5252 ± 0.0145[3] mas
Distance59.82 ± 0.02 ly
(18.340 ± 0.005 pc)
Absolute magnitude (MV)6.30[11]
B
Proper motion (μ) RA: −159.849[5] mas/yr
Dec.: +263.734[5] mas/yr
Parallax (π)54.1045 ± 0.0245[5] mas
Distance60.28 ± 0.03 ly
(18.483 ± 0.008 pc)
Details
A
Radius0.85±0.02[12] R☉
Luminosity0.7[11] L☉
Temperature5,224[11] K
Metallicity [Fe/H]0.22[13] dex
Rotation9.6±0.1 days[14]
Rotational velocity (v sin i)4.0±1.0[12] km/s
Age1.01±0.13[15] Gyr
B
Mass0.129±0.004[16] M☉
Radius0.160±0.005[16] R☉
Luminosity(1.46±0.04)×10−3[16] L☉
Surface gravity (log g)5.15[9] cgs
Temperature2,979±81[16] K
Rotation0.336186[9] days
Other designations
A: GJ 260, CD−61°1535, HD 53143, LTT 2715, SAO 249700, HIP 33690[17]
B: 2MASS J06595620-6145001, WISE J065955.94-614457.0[18]
Database references
SIMBADA
B

HD 53143 is a binary star in the Carina constellation, located 59.8 light-years (18.3 parsecs) from the Earth. With an apparent visual magnitude of 6.80, this star is a challenge to view with the naked eye even under ideal viewing conditions.

Characteristics

The components of this binary system are separated by 2.48'.[19]

Using the technique of gyrochronology, which measures the age of a low-mass star based on its rotation, HD 53143 A is about 1,010±130 million years old.[15] Depending on the source, the stellar classification for this star is G9 V[6] or K1V,[11] placing it near the borderline between G-type and K-type main sequence stars. In either case, it is generating energy through the thermonuclear fusion of hydrogen at its core. This star is smaller than the Sun, with about 85% of the Sun's radius.[12] It is emitting only 70% of the Sun's luminosity. The effective temperature of the star's outer envelope is cooler than the Sun at 5,224 K, giving it a golden-orange hue.[11]

The secondary has a spectral class of M5.0.[8] It is a red dwarf[7] with 13% of the Sun's mass, 16% of the Sun's radius and only 0.15% of the luminosity of the Sun.[16] It is a flare star.[9]

Debris disk

Debris disk around the star HD 53143 by the Hubble Space Telescope. The star itself has been hidden by the camera coronograph to make the disk visible.

Based upon an excess of infrared emission, a circumstellar debris disk has been found around the primary.[20] This disk is inclined at an angle of about 40–50° to the line of sight from the Earth and it has an estimated mass of more than 7×1020 kg. (For comparison, the mass of the Moon is 7.3477×1022 kg.) This is one of the oldest known debris disk systems and hence may be replenished through the collision of larger bodies. The observed inner edge of the disk is at a distance of 55 Astronomical Units (AU) from the host star, while it stretches out to twice that distance, or 110 AU. This debris disk may extend outside this range, as the measurements are limited by the sensitivity of the instruments. The dust appears evenly distributed with no indication of clumping.[11] The eccentricity of the ring is also one of the highest known, at 0.21.[14]

References

  1. ↑ Matrà, L.; Marino, S.; Wilner, D. J.; Kennedy, G. M.; Booth, M.; Krivov, A. V.; Williams, J. P.; Hughes, A. M. et al. (2025-01-15). "REsolved ALMA and SMA Observations of Nearby Stars (REASONS): A population of 74 resolved planetesimal belts at millimetre wavelengths". Astronomy and Astrophysics 693. doi:10.1051/0004-6361/202451397. Bibcode: 2025A&A...693A.151M. 
  2. ↑ Roman, Nancy G. (1987). "Identification of a constellation from a position". Publications of the Astronomical Society of the Pacific 99 (617): 695. doi:10.1086/132034. Bibcode: 1987PASP...99..695R  Constellation record for this object at VizieR.
  3. ↑ 3.0 3.1 3.2 3.3 3.4 3.5 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940  Gaia DR3 record for this source at VizieR.
  4. ↑ Cousins, A. W. J. (1973), "UBV photometry of some southern stars", Monthly Notes of the Astronomical Society of Southern Africa 32: 11, Bibcode: 1973MNSSA..32...11C 
  5. ↑ 5.0 5.1 5.2 5.3 5.4 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940  Gaia DR3 record for this source at VizieR.
  6. ↑ 6.0 6.1 6.2 6.3 Torres, C. A. O. et al. (December 2006), "Search for associations containing young stars (SACY). I. Sample and searching method", Astronomy and Astrophysics 460 (3): 695–708, doi:10.1051/0004-6361:20065602, Bibcode: 2006A&A...460..695T 
  7. ↑ 7.0 7.1 Newton, Elisabeth R.; Mondrik, Nicholas; Irwin, Jonathan; Winters, Jennifer G.; Charbonneau, David (November 2018). "New Rotation Period Measurements for M Dwarfs in the Southern Hemisphere: An Abundance of Slowly Rotating, Fully Convective Stars" (in en). The Astronomical Journal 156 (5): 217. doi:10.3847/1538-3881/aad73b. ISSN 0004-6256. Bibcode: 2018AJ....156..217N. 
  8. ↑ 8.0 8.1 Reid, I. Neill; Cruz, Kelle L.; Allen, P. R. (2007-05-02). "Meeting the Cool Neighbors. XI. Beyond the NLTT Catalog". The Astronomical Journal 133 (6): 2825–2840. doi:10.1086/517914. ISSN 0004-6256. Bibcode: 2007AJ....133.2825R. https://doi.org/10.1086/517914. 
  9. ↑ 9.0 9.1 9.2 9.3 Günther, Maximilian N.; Zhan, Zhuchang; Seager, Sara; Rimmer, Paul B.; Ranjan, Sukrit; Stassun, Keivan G.; Oelkers, Ryan J.; Daylan, Tansu et al. (February 2020). "Stellar Flares from the First TESS Data Release: Exploring a New Sample of M Dwarfs" (in en). The Astronomical Journal 159 (2): 60. doi:10.3847/1538-3881/ab5d3a. ISSN 0004-6256. Bibcode: 2020AJ....159...60G. 
  10. ↑ Evans, D. S. (June 20–24, 1966). "Determination of Radial Velocities and their Applications, Proceedings from IAU Symposium no. 30". in Alan Henry, Batten; Heard, John Frederick. 30. University of Toronto: International Astronomical Union. pp. 57. Bibcode: 1967IAUS...30...57E. 
  11. ↑ 11.0 11.1 11.2 11.3 11.4 11.5 Kalas, Paul et al. (January 2006), "First Scattered Light Images of Debris Disks around HD 53143 and HD 139664", The Astrophysical Journal 637 (1): L57–L60, doi:10.1086/500305, Bibcode: 2006ApJ...637L..57K 
  12. ↑ 12.0 12.1 12.2 Watson, C. A. et al. (May 2011), "On the alignment of debris discs and their host stars' rotation axis - implications for spin-orbit misalignment in exoplanetary systems", Monthly Notices of the Royal Astronomical Society: Letters 413 (1): L71–L75, doi:10.1111/j.1745-3933.2011.01036.x, Bibcode: 2011MNRAS.413L..71W 
  13. ↑ Árnadóttir, A. S.; Feltzing, S.; Lundström, I. (October 2010), "The ability of intermediate-band Strömgren photometry to correctly identify dwarf, subgiant, and giant stars and provide stellar metallicities and surface gravities", Astronomy and Astrophysics 521: A40, doi:10.1051/0004-6361/200913544, Bibcode: 2010A&A...521A..40A 
  14. ↑ 14.0 14.1 MacGregor, Meredith A.; Hurt, Spencer A.; Stark, Christopher C.; Howard, Ward S.; Weinberger, Alycia J.; Ren, Bin; Schneider, Glenn; Choquet, Elodie et al. (2022). "ALMA Images the Eccentric HD 53143 Debris Disk". The Astrophysical Journal Letters 933 (1): L1. doi:10.3847/2041-8213/ac7729. Bibcode: 2022ApJ...933L...1M. 
  15. ↑ 15.0 15.1 Barnes, Sydney A. (November 2007), "Ages for Illustrative Field Stars Using Gyrochronology: Viability, Limitations, and Errors", The Astrophysical Journal 669 (2): 1167–1189, doi:10.1086/519295, Bibcode: 2007ApJ...669.1167B 
  16. ↑ 16.0 16.1 16.2 16.3 16.4 Hardegree-Ullman, Kevin K.; Apai, Dániel; Bergsten, Galen J.; Pascucci, Ilaria; López-Morales, Mercedes (June 2023). "Bioverse: A Comprehensive Assessment of the Capabilities of Extremely Large Telescopes to Probe Earth-like O2 Levels in Nearby Transiting Habitable-zone Exoplanets" (in en). The Astronomical Journal 165 (6): 267. doi:10.3847/1538-3881/acd1ec. ISSN 0004-6256. Bibcode: 2023AJ....165..267H. 
  17. ↑ "NLTT 17321 -- High proper-motion Star", SIMBAD (Centre de Données astronomiques de Strasbourg), http://simbad.u-strasbg.fr/simbad/sim-id?protocol=html&Ident=HD+53143, retrieved 2007-07-24 
  18. ↑ "TIC 167812509". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=TIC+167812509. 
  19. ↑ Fuhrmann, Klaus; Chini, Rolf (2018-06-01). "Nearby Gaia DR2 Companions". Research Notes of the AAS 2 (2): 56. doi:10.3847/2515-5172/aacc72. ISSN 2515-5172. Bibcode: 2018RNAAS...2...56F. 
  20. ↑ Two new dusty planetary disks may be astrophysical mirrors of our Kuiper Belt, UC Berkeley News, January 19, 2006, http://www.berkeley.edu/news/media/releases/2006/01/19_kuiper.shtml, retrieved 2007-07-24 



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