WISE 0607+2429

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]

WISEP J060738.65+242953.4

Observation data Epoch 2010.30[1]      Equinox J2000[1]
Constellation	Gemini
Right ascension	06^h 07^m 38.65^s[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
Distance	25.4^+4.6 −3.9[1] ly (7.8^+1.4 −1.2[1] pc)
Details[1]
Mass	0.03–0.072 M☉
Luminosity	10^−4.56 ± 0.09 L☉
Temperature	1460 ± 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
SIMBAD	data

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 satellite — NASA 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. Castro, Philip J.; Gizis, John E. (2012). "Discovery of a Late L Dwarf: WISEP J060738.65+242953.4". The Astrophysical Journal. 746 (1): 3. arXiv:1110.4351. Bibcode:2012ApJ...746....3C. doi:10.1088/0004-637X/746/1/3. S2CID 119271171.
2. "2MASS J06073908+2429574 -- Infrared source". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2012-12-24.
3. 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. arXiv:1109.0054. Bibcode:2011AJ....142..171G. doi:10.1088/0004-6256/142/5/171. S2CID 118596629.
4. Route, Matthew (July 10, 2017). "Is WISEP J060738.65+242953.4 Really A Magnetically Active, Pole-on L Dwarf?". The Astrophysical Journal. 843 (2): 115. arXiv:1706.03010. Bibcode:2017ApJ...843..115R. doi:10.3847/1538-4357/aa78ab. S2CID 119056418.