DENIS J082303.1-491201

DENIS-P J082303.1-491201 (also known as DENIS J082303.1-491201, DE0823-49), is a Binary brown dwarf system, located 20.77 parsecs (67.7 ly) away from the Earth. The system is located in the constellation Vela.[1]

Characteristics

DE0823-49 A is the first brown dwarf in the system with a spectral class of L1.5, a mass of 0.028 to 0.063 M☉ and a temperature of 2,150 K (1,880 °C; 3,410 °F).

DE0823-49 B is also a brown dwarf but with a spectral type of L5.5, a mass of 0.018 to 0.045 M☉, and a temperature of 1,670 K (1,400 °C; 2,550 °F).

The total mass of the system is estimated to be around 0.64 to 0.74 M☉.

The system has an orbital period of 248 days. The age of the system is estimated to be around 80 to 500 millions years old, a relatively young object in the Solar neighbourhood, however it does not seem to belong to have any association with any moving groups.

History

DENIS J082303.1-491201 was discovered by Ngoc Phan-Bao et al as part of the Deep Near Infrared Survey of the Southern Sky or DENIS for short.[2]

Detected in 2006, DE0823-49 b was included in the NASA Exoplanet Archive as the first exoplanet discovered by the Astrometry exoplanet detection method.[3][4]

References

  1. ↑ Résultats pour "DENIS J082303.1-491201". sur l'application Compute constellation name from position de VizieR (Retrieved 1 June 2015)
  2. ↑ Phan-Bao, Ngoc; et al. (January 2008). "Discovery of new nearby L and late-M dwarfs at low Galactic latitude from the DENIS data base" (gif). 383 (3). Monthly Notices of the Royal Astronomical Society: 831–844. arXiv:0708.4169Freely accessible. Bibcode:2008MNRAS.383..831P. doi:10.1111/j.1365-2966.2007.12564.x. Retrieved 1 June 2015..
  3. ↑ "Exoplanet and candidate statistics". NASA Exoplanet Archive. Retrieved 1 June 2015.
  4. ↑ "Liste des exoplanètes découvertes par astrométrie". NASA Exoplanet Archive. Retrieved 1 June 2015.
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