NEOWISE-R observation of the coolest known brown dwarf

Edward L. Wright; Amy Mainzer; J. Davy Kirkpatrick; Frank Masci; Michael C. Cushing; James Bauer; Sergio Fajardo-Acosta; Christopher R. Gelino; Charles A. Beichman; M. F. Skrutskie; T. Grav; Peter R.M. Eisenhardt; Roc Cutri

doi:10.1088/0004-6256/148/5/82

NEOWISE-R observation of the coolest known brown dwarf

Edward L. Wright, Amy Mainzer, J. Davy Kirkpatrick, Frank Masci, Michael C. Cushing, James Bauer, Sergio Fajardo-Acosta, Christopher R. Gelino, Charles A. Beichman, M. F. Skrutskie, T. Grav, Peter R.M. Eisenhardt, Roc Cutri

Research output: Contribution to journal › Article › peer-review

28 Scopus citations

Abstract

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.

Original language	English (US)
Article number	82
Journal	Astronomical Journal
Volume	148
Issue number	5
DOIs	https://doi.org/10.1088/0004-6256/148/5/82
State	Published - Nov 1 2014
Externally published	Yes

Keywords

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

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1088/0004-6256/148/5/82

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title = "NEOWISE-R observation of the coolest known brown dwarf",

abstract = "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.",

keywords = "astrometry, brown dwarfs, infrared: stars, solar neighborhood, stars: individual (WISE J085510.83-071442.5), stars: low-mass",

author = "Wright, {Edward L.} and Amy Mainzer and Kirkpatrick, {J. Davy} and Frank Masci and Cushing, {Michael C.} and James Bauer and Sergio Fajardo-Acosta and Gelino, {Christopher R.} and Beichman, {Charles A.} and Skrutskie, {M. F.} and T. Grav and Eisenhardt, {Peter R.M.} and Roc Cutri",

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doi = "10.1088/0004-6256/148/5/82",

language = "English (US)",

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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

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

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JO - Astronomical Journal

JF - Astronomical Journal

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ER -

NEOWISE-R observation of the coolest known brown dwarf

Abstract

Keywords

ASJC Scopus subject areas

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