Astronomy:WISE 0607+2429

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Coordinates: Sky map 06h 07m 38.65s, +24° 29′ 53.5″

WISEP J060738.65+242953.4
Observation data
Equinox J2000.0]] (ICRS)
Constellation Gemini
Right ascension  06h 07m 38.65s[1]
Declination 24° 29′ 53.5″[1]
Characteristics
Spectral type L8[1]
Apparent magnitude (i) 20.02 ± 0.03[1]
Apparent magnitude (z) 16.94 ± 0.01[1]
Apparent magnitude (J (2MASS filter system)) 14.22 ± 0.03[1]
Apparent magnitude (H (2MASS filter system)) 13.04 ± 0.03[1]
Apparent magnitude (KS (2MASS filter system)) 12.47 ± 0.02[1]
Astrometry
Proper motion (μ) RA: -470 ± 10[1] mas/yr
Dec.: -330 ± 20[1] mas/yr
Distance25.4+4.6−3.9[1] ly
(7.8+1.4−1.2[1] pc)
Details[1]
Mass0.03–0.072 M
Luminosity10−4.56 ± 0.09 L
Temperature1460 ± 90 K
Other designations
WISEP J060738.65+242953.4[1]
W0607+2429[1]
2MASSW J06073908+2429574[1]
2MASS J06073908+2429574[2]
SDSS J060738.79+242954.4[1]
Database references
SIMBADdata

WISEP J060738.65+242953.4 (designation is abbreviated to W0607+2429[1]) is a brown dwarf of spectral class L8,[1] located in constellation Gemini at approximately 25 light-years from Earth.[1]

Discovery

WISEP J060738.65+242953.4 was discovered in 2012 by Castro & Gizis from data, collected by Wide-field Infrared Survey Explorer (WISE) Earth-orbiting satelliteNASA infrared-wavelength 40 centimetres (16 in) space telescope, which mission lasted from December 2009 to February 2011. There are also precovery identifications of this object in Two Micron All-Sky Survey (2MASS) data (observation epoch 1998.11) and in the Sloan Digital Sky Survey (SDSS) (DR7) (observation epoch 2006.98).[1] In 2012 Castro & Gizis published a paper in The Astrophysical Journal, where they presented discovery of a newfound by WISE L-type brown dwarf WISEP J060738.65+242953.4 (a single discovery, presented in the article).[1]

Distance

Trigonometric parallax of WISEP J060738.65+242953.4 is not yet measured. Therefore, there are only distance estimates of this object, obtained by indirect — spectrophotometric — means (see table).

WISEP J060738.65+242953.4 distance estimates
Source Parallax, mas Distance, pc Distance, ly Ref.
Castro & Gizis (2012) 7.8+1.4−1.2 25.4+4.6−3.9 [1]

Non-trigonometric distance estimates are marked in italic.

Physical properties

WISEP J060738.65+242953.4 has temperature 1460 ± 90 K and bolometric luminosity 10−4.56 ± 0.09 Solar luminosities (the estimates are based on the object's spectral class (L8)).[3] Mass estimates, determined from this temperature, are from 0.03 (for an assumed age 0.5 Gyr) to 0.072 (for an assumed age 10 Gyr) Solar masses, anyway below the hydrogen-burning limit, which implies that WISEP J060738.65+242953.4 is not a true star, but only a substellar object.[3]

While some researchers had claimed that WISEP J060738.65+242953.4 may be viewed from its pole, or may rotate slowly because of its narrow spectral lines, later work demonstrated that both of these claims were unlikely.[4] This latter study estimated that the size of the radio-emitting magnetosphere is approximately 107 m.

See also

  • List of star systems within 25–30 light-years
  • WISE 0031−3840 (L2 pec (blue))
  • WISE 0049+0441 (L9)
  • WISE 0206+2640 (L9 pec (red))
  • WISE 1311+3629 (L5 pec (blue))
  • WISE 1348+6603 (L9)
  • WISE 1647+5632 (L9 pec (red))
  • WISE 1830+4542 (L9)
  • WISE 2327−2730 (L9)
  • WISE 1800+0134 (L7.5)
  • WISE 0047+6803 (L7.5 pec)
  • WISE 0106+1518 (M8 pec)

References

  1. 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 1.12 1.13 1.14 1.15 1.16 1.17 1.18 1.19 1.20 1.21 1.22 1.23 Castro, Philip J.; Gizis, John E. (2012). "Discovery of a Late L Dwarf: WISEP J060738.65+242953.4". The Astrophysical Journal 746 (1): 3. doi:10.1088/0004-637X/746/1/3. Bibcode2012ApJ...746....3C. 
  2. "2MASS J06073908+2429574 -- Infrared source". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=2MASS+J06073908%2B2429574&submit=SIMBAD+search. Retrieved 2012-12-24. 
  3. 3.0 3.1 Gizis, John E.; Burgasser, Adam J.; Faherty, Jacqueline K.; Castro, Philip J.; Shara, Michael M. (2011). "WISEP J180026.60+013453.1: A nearby late-L Dwarf near the Galactic Plane". The Astronomical Journal 142 (5): 171. doi:10.1088/0004-6256/142/5/171. Bibcode2011AJ....142..171G. 
  4. Route, Matthew (July 10, 2017). "Is WISEP J060738.65+242953.4 Really A Magnetically Active, Pole-on L Dwarf?". The Astrophysical Journal 843: 115. doi:10.3847/1538-4357/aa78ab. Bibcode2017ApJ...843..115R.