WISE 0734-7157

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Coordinates: 07h 34m 44.02s, −71° 57′ 44″

WISE J073444.02-715744.0
Observation data
Epoch J2000[ 1]      Equinox J2000[ 1]
Constellation Volans
Right ascension 07h 34m 44.02s[ 1]
Declination −71° 57′ 44″[ 1]
Characteristics
Spectral typeY0[ 1]
Apparent magnitude (J (MKO-NIR filter system))20.41 ± 0.27[ 1]
Astrometry
Distance~ 34.9[ 1] ly
(~ 10.7[ 1] pc)
Other designations
WISE J073444.02-715744.0,[ 1]
WISE 0734-7157[ 1]

WISE J073444.02-715744.0 (designation abbreviated to WISE 0734-7157) is a brown dwarf of spectral class Y0,[ 1] located in constellation Volans at approximately 35 light-years from Earth.[ 1] It is one of the furthest Y0 brown dwarfs known.

Discovery

WISE 0734-7157 was discovered in 2012 by J. Davy Kirkpatrick et al. from data, collected by Wide-field Infrared Survey Explorer (WISE) Earth-orbiting satellite — NASA infrared-wavelength 40 cm (16 in) space telescope, which mission lasted from December 2009 to February 2011. In 2012 Kirkpatrick et al. published a paper in The Astrophysical Journal, where they presented discovery of seven new found by WISE brown dwarfs of spectral type Y, among which also was WISE 0734-7157.[ 1]

Distance

Trigonometric parallax of WISE 0734-7157 is not yet measured. Therefore, there are only distance estimates of this object, obtained by indirect — spectrofotometric — means (see table).

WISE 0734-7157 distance estimates

Source Parallax, mas Distance, pc Distance, ly Ref.
Kirkpatrick et al. (2012), Table 8 10.7 34.9 [ 1]

Non-trigonometric distance estimates are marked in italic.

See also

The other six discoveries of brown dwarfs, published in Kirkpatrick et al. (2012):[ 1]

  • WISE 0146+4234 (Y0)
  • WISE 0350-5658 (Y1)
  • WISE 0359-5401 (Y0)
  • WISE 0535-7500 (≥Y1)
  • WISE 0713-2917 (Y0)
  • WISE 2220-3628 (Y0)

References

  1. ↑ Kirkpatrick, J. D.; Gelino, C. R.; Cushing, M. C.; Mace, G. N.; Griffith, R. L.; Skrutskie, M. F.; Marsh, K. A.; Wright, E. L.; Eisenhardt, P. R.; McLean, I. S.; Mainzer, A. K.; Burgasser, A. J.; Tinney, C. G.; Parker, S.; Salter, G. (2012). "Further Defining Spectral Type "Y" and Exploring the Low-mass End of the Field Brown Dwarf Mass Function". The Astrophysical Journal 753 (2): 156. arXiv:1205.2122. Bibcode:2012ApJ...753..156K. doi:10.1088/0004-637X/753/2/156. 
Stars of Volans
Bayer
HR
  • 2505
  • 2531
  • 2536
  • 2662
  • 2712
  • 2888
  • 2979
  • 3036
  • 3038
  • 3081
  • 3171
  • 3280
  • 3346
  • 3370
  • 3417
  • 3491
  • 3495
  • 3537
  • 3544
  • 3610
HD
Other
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