Flux and Color of WISE 0855-0714
Edward L. Wright, Jack Foley (UCLA Physics, Astronomy Dept.)

TL;DR
This paper presents a detailed analysis of the flux and color of WISE 0855-0714, the coldest known brown dwarf, using 10.5 years of NEOWISE data to overcome background contamination.
Contribution
It provides the first uncontaminated measurements of WISE 0855-0714's flux and color, refining its photometric properties.
Findings
W1 magnitude = 19.3 ± 0.37
W1-W2 color = 5.4 ± 0.37
Analysis confirms low temperature and proximity
Abstract
WISE 0855-0714 is the coldest known brown dwarf, located 2.28 pc from the solar system. Discovered by the Wide-Field Infrared Survey Explorer (WISE) in 2014 (Luhman 2014), the object is of interest to scientists because of its low temperature ( K), proximity to the solar system, small mass (), and high proper motion. The first observations of W0855 by WISE in 2010 are heavily contaminated by a background source. With 10.5 years of observations following the NEOWISE reactivation in 2013 (Mainzer et al., 2014), we present a robust analysis of W0855's flux and color unobstructed by this background source. We obtain W1 = 19.3 and W1-W2 = 5.4 magnitudes with an error of 0.37 magnitudes.
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Taxonomy
TopicsStellar, planetary, and galactic studies · Astronomy and Astrophysical Research · Gamma-ray bursts and supernovae
