2014ApJ...793L..16F

Query : 2014ApJ...793L..16F

2014ApJ...793L..16F - Astrophys. J., 793, L16 (2014/September-3)

Indications of water clouds in the coldest known brown dwarf.

FAHERTY J.K., TINNEY C.G., SKEMER A. and MONSON A.J.

Abstract (from CDS):

We present a deep near-infrared image of the newly discovered brown dwarf WISE J085510.83-071442.5 (W0855) using the FourStar imager at Las Campanas Observatory. Our detection of J3 = 24.8–0.35+0.53 (JMKO= 25.0–0.35+0.53) at 2.6σ–or equivalently an upper limit of J3 > 23.8 (JMKO> 24.0) at 5σ makes W0855 the reddest brown dwarf ever categorized (JMKO- W2 = 10.984–0.35+0.53 at 2.6σ–or equivalently an upper limit of JMKO- W2 > 9.984 at 5σ) and refines its position on color-magnitude diagrams. Comparing the new photometry with chemical equilibrium model atmosphere predictions, we demonstrate that W0855 is 2.7σ from models using a cloudless atmosphere and well reproduced by partly cloudy models (50%) containing sulfide and water ice clouds. Non-equilibrium chemistry or non-solar metallicity may change predictions, however using currently available model approaches, this is the first candidate outside our own solar system to have direct evidence for water clouds.

Abstract Copyright: ∼

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

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 WISEA J085510.74-071442.5 BD* 08 55 16.53798 -07 14 49.3728           Y2 124 0

Query : 2014ApJ...793L..16F

Basic data :
WISEA J085510.74-071442.5 -- Brown Dwarf
Other object types: otypes_help 		BD* (2014AJ), MIR (WISEA,WISE), PM* (2014ApJ), * (CNS5)
ICRS coord. (ep=J2000) : 		08 55 16.53798 -07 14 49.3728 (Middle-IR) [ ] C 2021ApJS..253....7K
FK4 coord. (ep=B1950 eq=1950) : 		08 53 16.17236 -07 03 51.5121 [ ]
Gal coord. (ep=J2000) : 		235.00547025 +23.36945817 [ ]
Proper motions mas/yr : 		-8123.7 673.2 [1.3 1.3 90] C 2021ApJS..253....7K
Parallaxes (mas): 		439.0 [2.4] C 2021ApJS..253....7K
Spectral type: 		Y2 D 2015ApJ...799...37L
Fluxes (2) :
J 25.00 [0.53] E 2014ApJ...796...39T
H 23.83 [0.24] D 2017ApJ...842..118L
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Identifiers (3) :
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CNS5 2194 WISEA J085510.74-071442.5 WISE J085510.83-071442.5

References (124 between 1850 and 2026) (Total 124)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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WISEA J085510.74-071442.5 WISE J085510.83-071442.5

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