SIMBAD references

2014AJ....148...82W - Astron. J., 148, 82 (2014/November-0)

NEOWISE-R observation of the coolest known brown dwarf.

WRIGHT E.L., MAINZER A., KIRKPATRICK J.D., MASCI F., CUSHING M.C., BAUER J., FAJARDO-ACOSTA S., GELINO C.R., BEICHMAN C.A., SKRUTSKIE M.F., GRAV T., EISENHARDT P.R.M. and CUTRI R.

Abstract (from CDS):

The Wide-field Infrared Survey Explorer (WISE) spacecraft has been reactivated as NEOWISE-R to characterize and search for near-Earth objects. The brown dwarf WISE J085510.83-071442.5 has now been re-observed by NEOWISE-R, and we confirm the results of Luhman, who found a very low effective temperature (~250 K), a very high proper motion (8.''1±0.''1/yr), and a large parallax (454±45 mas). The large proper motion has separated the brown dwarf from the background sources that influenced the 2010 WISE data, allowing a measurement of a very red WISE color of W1 - W2 >3.9 mag. A re-analysis of the 2010 WISE astrometry using only the W2 band, combined with the new NEOWISE-R 2014 position, gives an improved parallax of 448±33 mas and a proper motion of 8.''08±0.''05/yr. These are all consistent with values from Luhman.

Abstract Copyright: ∼

Journal keyword(s): astrometry - brown dwarfs - infrared: stars - solar neighborhood - stars: individual: WISE J085510.83-071442.5 - stars: low-mass

Simbad objects: 4

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