| 词条 | WISE 1639-6847 |
| 释义 |
|name=WISE J163940.83-684738.6}}{{Starbox observe |epoch= |equinox=J2000{{r|Tinney2012}} |constell=Triangulum Australe |ra={{RA|16|39|40.83}}{{r|Tinney2012}} |dec={{DEC|-68|47|38.6}}{{r|Tinney2012}} }}{{Starbox character |class=Y0-Y0.5{{r|Tinney2012}} }}{{Starbox astrometry |prop_mo_ra = {{pmcon|rer|3156.0|3.5|169.3|0.1}} |prop_mo_dec = {{pmcon|ded|3156.0|3.5|169.3|0.1}} |pm_footnote={{r|Tinney2014}} |parallax=202.3 |p_error=3.1 |parallax_footnote={{r|Tinney2014}} }}{{Starbox catalog |names=WISEPC J163940.83-684738.6{{r|Tinney2012}} WISE 1639-6847{{r|Dupuy2013}} W1639{{r|Tinney2012}}}}{{Starbox reference |Simbad=WISE+J163940.83-684738.6 }}{{Starbox end}} WISE J163940.83-684738.6 (designation is abbreviated to WISE 1639-6847{{r|Dupuy2013}}, or W1639{{r|Tinney2012}}) is a brown dwarf of spectral class Y0-Y0.5,{{r|Tinney2012}} located in constellation Triangulum Australe (it's the nearest star / brown dwarf in this constellation) at approximately 16 light-years from Earth.{{r|Tinney2014}} DiscoveryWISE 1639-6847 was discovered in 2012 by C. G. Tinney 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 Tinney et al. carried out follow-up observations of WISE 1639-6847 using the FourStar infrared mosaic camera mounted on the 6.5 m Magellan Baade telescope at Las Campanas Observatory, Chile (on 2012 May 10–11 (UT)); and spectroscopy using the Folded-port Infrared Echellette (FIRE) also mounted on the 6.5 m Magellan Baade telescope (on 2012 July 10 (UT)). In 2012 Tinney et al. published a paper in The Astrophysical Journal, where they presented discovery of a newfound by WISE Y-type brown dwarf WISE 1639-6847 (the only brown dwarf discovery, presented in the article): the paper was accepted for publication on 20 September 2012, submitted to arXiv on 27 September 2012, and published in November 2012.{{r|Tinney2012}} Physical propertiesWISE 1639-6847 has absolute magnitude in J-band 22.14 ± 0.22.{{r|Tinney2012}} See alsoList of nearest stars and brown dwarfsReferences1. ^{{Cite journal | doi = 10.1126/science.1241917| title = Distances, Luminosities, and Temperatures of the Coldest Known Substellar Objects| journal = Science| volume = 341| issue = 6153| pages = 1492–5| year = 2013| last1 = Dupuy | first1 = T. J.| last2 = Kraus | first2 = A. L.|arxiv = 1309.1422 |bibcode = 2013Sci...341.1492D | pmid=24009359}} [1][2]2. ^{{cite journal |last1=Tinney |first1=C. G. |last2=Faherty |first2=Jacqueline K. |last3=Kirkpatrick |first3=J. Davy |last4=Cushing |first4=Mike |last5=Morley |first5=Caroline V. |last6=Wright |first6=Edward L. |title=The Luminosities of the Coldest Brown Dwarfs |year=2014 |journal=The Astrophysical Journal |volume=796 | issue=1 | pages=39 |arxiv=1410.0746 |doi=10.1088/0004-637X/796/1/39 |bibcode=2014ApJ...796...39T}} }}{{Nearest star systems|4}}{{Stars of Triangulum Australe}}{{Brown-dwarf-stub}} 5 : Brown dwarfs|Y-type stars|Triangulum Australe|WISE objects|Astronomical objects discovered in 2012 |
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