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WISE 1828+2650: Difference between revisions

Coordinates: Sky map 18h 28m 31.08s, +26° 50′ 37.8″
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|doi=10.1088/0004-6256/142/2/57
|doi=10.1088/0004-6256/142/2/57
|bibcode=2011AJ....142...57G}}</ref>), discovered in 2011 by the [[Wide-field Infrared Survey Explorer]]. With temperature below 300 [[Kelvin|K]]<ref name="Cushing2011v1"/>, it is currently the coolest known brown dwarf. Also it has the latest known [[spectral class]] (≥Y2,<ref name="Kirkpatrick2012"/> initially was estimated as >Y0<ref name="Cushing2011v1"/>), and is identified as the
|bibcode=2011AJ....142...57G}}</ref>), discovered in 2011 by the [[Wide-field Infrared Survey Explorer]]. With temperature below 300 [[Kelvin|K]]<ref name="Cushing2011v1"/>, it is currently the coolest known brown dwarf. Also it has the latest known [[spectral class]] (≥Y2,<ref name="Kirkpatrick2012"/> initially was estimated as >Y0<ref name="Cushing2011v1"/>), and is identified as the
"archetypal member" of the Y spectral class.<ref name="Cushing2011v1"/>
"archetypal member" of the Y spectral class.<ref name="Cushing2011v1"/> (Although in 2012 was discovered 8 more Y-type brown dwarf, WISE 1828+2650 remains to be the object with latest spectral class<ref name="Kirkpatrick2012"/>).


==Distance==
==Distance==
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| Kirkpatrick et al., 2011, Table 6 || || ''<9.4'' || ''<30.7'' || <ref name="Kirkpatrick2011v1"/>
| Kirkpatrick et al., 2011, Table 6 || || ''<9.4'' || ''<30.7'' || <ref name="Kirkpatrick2011v1"/>
|-
|-
| Marsh et al., 2012 || 122 ± 13 || 8.2{{±|1.0|0.8}} || 26.7{{±|3.2|2.6}} || <ref name="Beichman2012"/><ref name="Kirkpatrick2012"/>
| Beichman et al., 2012 || 122 ± 13 || 8.2{{±|1.0|0.8}} || 26.7{{±|3.2|2.6}} || <ref name="Beichman2012"/><ref name="Kirkpatrick2012"/>
|}
|}


Revision as of 09:03, 16 May 2012

WISEPA J182831.08+265037.8

Infrared image from WISE satellite. WISE 1828+2650 is circled green dot at the centre.
Observation data
Epoch J2000[1]      Equinox J2000[1]
Constellation Template:Constel
Right ascension 18h 28m 31.08s[1]
Declination 26° 50′ 37.8″[1]
Characteristics
Spectral type ≥Y2[2]
Apparent magnitude (J (MKO filter system)) 23.57 ± 0.35[1]
Apparent magnitude (H (MKO filter system)) 22.85 ± 0.24[1]
Astrometry
Proper motion (μ) RA: 1078 ± 327[1] mas/yr
Dec.: 118 ± 409[1] mas/yr
Distance<30.7[3] ly
(<9.4[3] pc)
Details
Temperature≤300[3] K
Other designations
WISEPA J182831.08+265037.8[1], WISEP J1828+2650[3], WISE J1828+2650[1]


WISE 1828+2650 (full designation is WISEPA J182831.08+265037.8) is a brown dwarf, located in south-west corner of constellation Template:Constel. It is one of six Y-type brown dwarfs (along with WISE 0410+1502, WISE 1405+5534, WISE 1541-2250, WISE 1738+2732 and WISE 2056+1459) among 106 brown dwarfs (counting components of two binary systems[4]), discovered in 2011 by the Wide-field Infrared Survey Explorer. With temperature below 300 K[3], it is currently the coolest known brown dwarf. Also it has the latest known spectral class (≥Y2,[2] initially was estimated as >Y0[3]), and is identified as the "archetypal member" of the Y spectral class.[3] (Although in 2012 was discovered 8 more Y-type brown dwarf, WISE 1828+2650 remains to be the object with latest spectral class[2]).

Distance

Initially (in 2011) photometric distance estimate of this object was <9.4 pc (<30.7 ly).[1] In 2012 was published its trigonometric parallax: 0.122 ± 0.013 arcsecond, corresponding to a distance 8.2+1.0
−0.8 pc, or 26.7+3.2
−2.6 ly.[5][2]

WISE 0410+1502 distance estimates

Source Parallax, mas Distance, pc Distance, ly Ref.
Kirkpatrick et al., 2011, Table 6 <9.4 <30.7 [1]
Beichman et al., 2012 122 ± 13 8.2+1.0
−0.8		 26.7+3.2
−2.6		 [5][2]

Non-trigonometric distance estimates are marked in italic.

See also

References

  1. ^ a b c d e f g h i j k l Kirkpatrick, J. Davy (2011). "The First Hundred Brown Dwarfs Discovered by the Wide-field Infrared Survey Explorer (WISE)". arXiv:1108.4677 [astro-ph.SR]. {{cite arXiv}}: Unknown parameter |accessdate= ignored (help); Unknown parameter |bibcode= ignored (help); Unknown parameter |coauthors= ignored (|author= suggested) (help); Unknown parameter |doi= ignored (help); Unknown parameter |version= ignored (help)
  2. ^ a b c d e Kirkpatrick, J. Davy (2012). "Further Defining Spectral Type "Y" and Exploring the Low-mass End of the Field Brown Dwarf Mass Function". arXiv:1205.2122 [astro-ph.SR]. {{cite arXiv}}: Unknown parameter |accessdate= ignored (help); Unknown parameter |bibcode= ignored (help); Unknown parameter |coauthors= ignored (|author= suggested) (help); Unknown parameter |version= ignored (help)
  3. ^ a b c d e f g Cushing, Michael C. (2011). "The Discovery of Y Dwarfs using Data from the Wide-field Infrared Survey Explorer (WISE)". arXiv:1108.4678 [astro-ph.SR]. {{cite arXiv}}: Unknown parameter |accessdate= ignored (help); Unknown parameter |bibcode= ignored (help); Unknown parameter |coauthors= ignored (|author= suggested) (help); Unknown parameter |doi= ignored (help); Unknown parameter |version= ignored (help)
  4. ^ Gelino (2011). "WISE Brown Dwarf Binaries: The Discovery of a T5+T5 and a T8.5+T9 System". v1. arXiv:1106.3142 [astro-ph.SR]. Bibcode:2011AJ....142...57G. doi:10.1088/0004-6256/142/2/57. {{cite arXiv}}: Text "Christopher R." ignored (help)
  5. ^ a b Beichman et al., in prep.
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