LHS 2090

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LHS 2090
Observation data
Epoch J2000.0        Equinox J2000.0
Constellation Cancer
Right ascension 09h 00m 23.594s [1]
Declination +21° 50′ 05.43″ [1]
Apparent magnitude  (V)16.11 [2]
Characteristics
Evolutionary stage Main-sequence star [2]
Spectral type M6.5 V [3]
Apparent magnitude  (J)9.44 [2]
Astrometry
Radial velocity (Rv)23.3 [2]  km/s
Proper motion (μ)RA: -514.942  mas/yr [4]
Dec.: -592.253  mas/yr [4]
Parallax (π)157.2686 ± 0.0535  mas [4]
Distance 20.739 ± 0.007  ly
(6.359 ± 0.002  pc)
Details
Mass 0.09 [5]   M☉
Radius 0.12 [6]   R☉
Luminosity 0.00082 [7]   L☉
Temperature 2680±24 [7]   K
Metallicity [Fe/H]-0.06±0.17 [8]   dex
Rotation 0.439 d [6]
Rotational velocity (v sin i)15.0±1.0 [6]  km/s
Other designations
Gaia DR2  685103912857072640, LHS  2090, LP  368-128, NLTT  20726, 2MASS J09002359+2150054 [9]
Database references
SIMBAD data
Cancer constellation map.svg
Red pog.png
LHS 2090
Location of LHS 2090 in the constellation Cancer

LHS 2090 is a red dwarf star of spectral type M6.5V, located in constellation Cancer at 20.8 light-years from Earth. [10]

The star was identified to be a red dwarf at short distance (6 parsecs from Sun) in 2001. [11] As typical for very cool red dwarfs, its spectrum is dominated by molecular water absorption. Stellar metallicity is similar to that of Sun`s. [8]

Radial velocity measurements did not yield any detection of stellar companion or giant planet on orbit around LHS 2090, as in 2018. [2]

Related Research Articles

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References

  1. 1 2 Cutri, R. M.; et al. (2003). "2MASS All-Sky Catalog of Point Sources". VizieR On-line Data Catalog. Bibcode:2003yCat.2246....0C.
  2. 1 2 3 4 5 Henry, Todd J.; Jao, Wei-Chun; Winters, Jennifer G.; Dieterich, Sergio B.; Finch, Charlie T.; Ianna, Philip A.; Riedel, Adric R.; Silverstein, Michele L.; Subasavage, John P.; Vrijmoet, Eliot Halley (2018), "The Solar Neighborhood XLIV: RECONS Discoveries within 10 parsecs", The Astronomical Journal, 155 (6): 265, arXiv: 1804.07377 , Bibcode:2018AJ....155..265H, doi:10.3847/1538-3881/aac262, S2CID   53983430
  3. ↑ Alonso-Floriano, F. J.; Morales, J. C.; Caballero, J. A.; Montes, D.; Klutsch, A.; Mundt, R.; Cortés-Contreras, M.; Ribas, I.; Reiners, Ansgar; Amado, P. J.; Quirrenbach, A.; Jeffers, S. V. (2015). "CARMENES input catalogue of M dwarfs" (PDF). Astronomy & Astrophysics. 577: A128. arXiv: 1502.07580 . doi:10.1051/0004-6361/201525803. S2CID   53135130.
  4. 1 2 3 Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics . 649: A1. arXiv: 2012.01533 . Bibcode:2021A&A...649A...1G. doi: 10.1051/0004-6361/202039657 . S2CID   227254300. (Erratum:  doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
  5. ↑ Davison, Cassy L.; White, R. J.; Henry, T. J.; Riedel, A. R.; Jao, W-C.; Bailey Iii, J. I.; Quinn, S. N.; Cantrell, J. R.; Subasavage, J. P.; Winters, J. G. (2015), "A 3D Search for Companions to 12 Nearby M Dwarfs", The Astronomical Journal, 149 (3): 106, arXiv: 1501.05012 , Bibcode:2015AJ....149..106D, doi:10.1088/0004-6256/149/3/106, S2CID   9719725
  6. 1 2 3 Fouqué, Pascal; et al. (April 2018), "SPIRou Input Catalogue: global properties of 440 M dwarfs observed with ESPaDOnS at CFHT", Monthly Notices of the Royal Astronomical Society, 475 (2): 1960–1986, arXiv: 1712.04490 , Bibcode:2018MNRAS.475.1960F, doi:10.1093/mnras/stx3246.
  7. 1 2 Dieterich, Sergio B.; Henry, Todd J.; Jao, Wei-Chun; Winters, Jennifer G.; Hosey, Altonio D.; Riedel, Adric R.; Subasavage, John P. (2013), "The Solar Neighborhood. Xxxii. The Hydrogen Burning Limit", The Astronomical Journal, 147 (5): 94, arXiv: 1312.1736 , doi:10.1088/0004-6256/147/5/94, S2CID   21036959
  8. 1 2 Rojas-Ayala, Bárbara; Covey, Kevin R.; Muirhead, Philip S.; Lloyd, James P. (2011), "Metallicity and Temperature Indicators in M Dwarfk-Band Spectra: Testing New and Updated Calibrations with Observations of 133 Solar Neighborhood M Dwarfs", The Astrophysical Journal, 748 (2): 93, arXiv: 1112.4567 , doi:10.1088/0004-637X/748/2/93, S2CID   41902340
  9. ↑ "LHS 2090". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 29 January 2018.
  10. ↑ Henry, T. J.; Jao, Wei-Chun; Subasavage, John P.; Beaulieu, Thomas D.; Ianna, Philip A.; Costa, Edgardo; Méndez, René A. (2006). "The Solar Neighborhood. XVII. Parallax Results from the CTIOPI 0.9 m Program: 20 New Members of the RECONS 10 Parsec Sample" (PDF). The Astronomical Journal . 132 (6): 2360–2371. arXiv: astro-ph/0608230 . Bibcode:2006AJ....132.2360H. doi:10.1086/508233. S2CID   15002841.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  11. ↑ Scholz, R.-D.; Meusinger, H.; Jahreiß, H. (2001), "Search for nearby stars among proper motion stars selected by optical-to-infrared photometry", Astronomy & Astrophysics, 374 (2): L12–L15, arXiv: astro-ph/0106222 , doi:10.1051/0004-6361:20010811, S2CID   8488435
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