2MASS J00361617+1821104

2MASS J00361617+1821104 (abbreviated to 2MASS 0036+1821) is a brown dwarf, located in 28.6 light-years from Earth in the constellation Pisces. It was discovered in 2000 by I. Neill Reid et al. Kinematically, it does not belong to any known moving group, been grouped with other "field stars".[4]

2MASS J00361617+1821104
Observation data
Epoch J2000      Equinox J2000
Constellation Pisces
Right ascension 00h 36m 16.17s
Declination 18° 21′ 10.4″
Characteristics
Spectral type L3.5
Apparent magnitude (J) 12.466 ± 0.027
Apparent magnitude (H) 11.588 ± 0.029
Apparent magnitude (K) 11.058 ± 0.021
Astrometry
Radial velocity (Rv)19.02 km/s
Proper motion (μ) RA: 901.558 mas/yr
Dec.: 124.019 mas/yr
Parallax (π)114.4167 ± 0.2088 mas[1]
Distance28.51 ± 0.05 ly
(8.74 ± 0.02 pc)
Details
Radius1.01±0.07[2] RJup
Temperature1300–2000 K
Rotation3.08±0.05 h[3]
Other designations
2MASS J00361617+1821104;2MASSW J0036159+182110, LSPM J0036+1821, Gaia DR2 2794735086363871360
Database references
SIMBADdata

2MASS 0036+1821 is of spectral type L3.5, the surface temperature is 1300-2000 Kelvin. As with other brown dwarfs of spectral type L, its spectrum is dominated of metal hydrides and alkali metals. Its position shifts due to its proper motion by 0.9071 arcseconds per year.

The surface of 2MASS 0036+1821 is completely covered by clouds, although cloud deck appear to be thin (less than ten optical depths)[3] Because of unusually rapid rotation, it is possessing a strong magnetic field over 1000 G at the photosphere level,[5] and is well known for its radio emissions.[6]

See also

References
  1. Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  2. Vos, Johanna M.; Biller, Beth A.; Allers, Katelyn N.; Faherty, Jacqueline K.; Liu, Michael C.; Metchev, Stanimir; Eriksson, Simon; Manjavacas, Elena; Dupuy, Trent J.; Janson, Markus; Radigan-Hoffman, Jacqueline; Crossfield, Ian; Bonnefoy, Mickaël; Best, William M. J.; Homeier, Derek; Schlieder, Joshua E.; Brandner, Wolfgang; Henning, Thomas; Bonavita, Mariangela; Buenzli, Esther (2020), "Spitzer Variability Properties of Low-gravity L Dwarfs", The Astronomical Journal, 160 (1): 38, arXiv:2005.12854, Bibcode:2020AJ....160...38V, doi:10.3847/1538-3881/ab9642, S2CID 218889787
  3. Sanghavi, Suniti; Shporer, Avi (2018), "Photopolarimetric Characteristics of Brown Dwarfs. I. Uniform Cloud Decks", The Astrophysical Journal, 866 (1): 28, arXiv:1705.05041, Bibcode:2018ApJ...866...28S, doi:10.3847/1538-4357/aadf94, S2CID 55544773
  4. Riedel, Adric R.; Ditomasso, Victoria; Rice, Emily L.; Alam, Munazza K.; Abrahams, Ellianna; Crook, James; Cruz, Kelle L.; Faherty, Jacqueline K. (2019), "Radial Velocities, Space Motions, and Nearby Young Moving Group Memberships of Eleven Candidate Young Brown Dwarfs", The Astronomical Journal, 157 (6): 247, arXiv:1904.10579, Bibcode:2019AJ....157..247R, doi:10.3847/1538-3881/ab1915, S2CID 129945848
  5. Guenther, E. W.; Zapatero-Osorio, María Rosa; Mehner, A.; Martín, Eduardo L. (2009), "Short-term spectroscopic monitoring of two cool dwarfs with strong magnetic fields", Astronomy & Astrophysics, 498 (1): 281–287, arXiv:0903.2340, Bibcode:2009A&A...498..281G, doi:10.1051/0004-6361/200810216, S2CID 18611224
  6. Zic, Andrew; Lynch, Christene; Murphy, Tara; Kaplan, David L.; Chandra, Poonam (February 2019), "Low-frequency GMRT observations of ultra-cool dwarfs", Monthly Notices of the Royal Astronomical Society, 483 (1): 614–623, arXiv:1811.09294, doi:10.1093/mnras/sty3163
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