WISE 0350−5658
{{Short description|Brown dwarf in the constellation Reticulum}}
{{Sky|03|50|00.32|-|56|58|30.2|17.7}}
{{Starbox begin
| name = WISE J035000.32−565830.2
}}
{{Starbox image
|image={{Location map|100x100|AlternativeMap=Reticulum_constellation_map.svg
|alt=WISE 0350−5658 is located in the constellation Reticulum
|caption=Location of WISE 0350−5658 in the constellation Reticulum|border=infobox|mark=Red_pog.png|width=300
|label=WISE 0350−5658
|lat=61.1
|long=52.9
}}|caption=
}}
{{Starbox observe
| epoch = J2000
| constell = Reticulum
| ra = {{RA|03|50|00.32}}{{r|Kirkpatrick2012}}
| dec = {{DEC|-56|58|30.2}}{{r|Kirkpatrick2012}}
}}
{{Starbox character
| class = Y1{{r|Kirkpatrick2012}}
| appmag_1_passband = J (MKO-NIR filter system)
| appmag_1 = >22.8{{r|Kirkpatrick2012}}
| appmag_3_passband = H (MKO-NIR filter system)
| appmag_3 = >21.5{{r|Kirkpatrick2012}}
}}
{{Starbox astrometry
| prop_mo_ra = {{val|−208.7|1.0}}
| prop_mo_dec = {{val|−575.4|1.1}}
| parallax = 176.4
| p_error = 2.3
}}
{{Starbox detail
| temperature = {{val|388|88}}
}}
{{Starbox catalog
| names = WISE J035000.32−565830.2,{{r|Kirkpatrick2012}}
WISE 0350−5658{{r|Kirkpatrick2012}}}}
{{Starbox reference
| Simbad = WISE+J035000.32-565830.2
}}
{{Starbox end}}
WISE J035000.32−565830.2 (designation abbreviated to WISE 0350−5658) is a (sub-)brown dwarf of spectral class Y1,{{r|Kirkpatrick2012}} located in constellation Reticulum, the nearest known star/brown dwarf in this constellation. Being approximately 18.5 light-years from Earth, it is one of the Sun's nearest neighbors.
Discovery
File:WISE 0350-5658 unWISE.jpg]]
WISE 0350−5658 was discovered in 2012 by J. Davy Kirkpatrick and colleagues from data collected by the Wide-field Infrared Survey Explorer (WISE) in the infrared at a wavelength of 40 cm (16 in), whose mission lasted from December 2009 to February 2011. In 2012, Kirkpatrick et al. published a paper in The Astrophysical Journal, where they presented the discovery of seven new brown dwarfs of spectral type Y that had been found by WISE, among which was WISE 0350−5658.{{r|Kirkpatrick2012}}
Distance
WISE 0350−5658 is one of the nearest known brown dwarfs: its trigonometric parallax is 0.184 ± 0.010 arcsecond, corresponding to a direct distance of 5.4 pc (17.7 ly).
Physical properties
WISE 0350−5658 was observed together with WISEP J1738+2732 with the Gemini Observatory. The researchers found that non-equilibrium chemistry models reproduce the spectra of these two brown dwarfs better than equilibrium models. The researchers also found an effective temperature of 350±25 K and surface gravity of log g=4.0±0.25 for WISE 0350−5658. A mass of 7−9 {{Jupiter mass|link=true}} was estimated in this work.{{r|Leggett16}} Later work using the Spitzer Space Telescope and J-band photometry found that WISE 0350−5658 has a low tangential velocity, could be metal-rich and also found a similar mass of 3−8 {{Jupiter mass}}. These properties could be an indicator that it is a young Y-dwarf, and might be a rogue planet.{{r|Leggett17}} Another work using Hubble found a slightly higher mass of 7−13 {{Jupiter mass}}.{{r|Fontanive23}}
See also
The other six discoveries of brown dwarfs, published in Kirkpatrick et al. (2012):{{r|Kirkpatrick2012}}
- WISE 0146+4234 (Y0)
- WISE 0359−5401 (Y0)
- WISE 0535−7500 (≥Y1)
- WISE 0713−2917 (Y0)
- WISE 0734−7157 (Y0)
- WISE 2220−3628 (Y0)
References
{{reflist|refs=
}}
{{nearest systems|4}}
{{Stars of Reticulum}}
{{DEFAULTSORT:WISE 0350-5658}}