TY - JOUR
T1 - NEOWISE-R observation of the coolest known brown dwarf
AU - Wright, Edward L.
AU - Mainzer, Amy
AU - Kirkpatrick, J. Davy
AU - Masci, Frank
AU - Cushing, Michael C.
AU - Bauer, James
AU - Fajardo-Acosta, Sergio
AU - Gelino, Christopher R.
AU - Beichman, Charles A.
AU - Skrutskie, M. F.
AU - Grav, T.
AU - Eisenhardt, Peter R.M.
AU - Cutri, Roc
N1 - Publisher Copyright:
© 2014. The American Astronomical Society. All rights reserved.
PY - 2014/11/1
Y1 - 2014/11/1
N2 - 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-1), 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-1. These are all consistent with values from Luhman.
AB - 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-1), 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-1. These are all consistent with values from Luhman.
KW - astrometry
KW - brown dwarfs
KW - infrared: stars
KW - solar neighborhood
KW - stars: individual (WISE J085510.83-071442.5)
KW - stars: low-mass
UR - https://www.scopus.com/pages/publications/84907934828
UR - https://www.scopus.com/pages/publications/84907934828#tab=citedBy
U2 - 10.1088/0004-6256/148/5/82
DO - 10.1088/0004-6256/148/5/82
M3 - Article
AN - SCOPUS:84907934828
SN - 0004-6256
VL - 148
JO - Astronomical Journal
JF - Astronomical Journal
IS - 5
M1 - 82
ER -