2013A&A...555L...5G

Query : 2013A&A...555L...5G

2013A&A...555L...5G - Astronomy and Astrophysics, volume 555L5-5 (2013/7-1)

Fast-evolving weather for the coolest of our two new substellar neighbours.

GILLON M., TRIAUD A.H.M.J., JEHIN E., DELREZ L., OPITOM C., MAGAIN P., LENDL M. and QUELOZ D.

Abstract (from CDS):

We present the results of intense photometric monitoring in the near-infrared (∼0.9µm) with the TRAPPIST robotic telescope of the newly discovered binary brown dwarf WISEJ104915.57-531906.1, the third closest system to the Sun at a distance of only 2pc. Our twelve nights of time-series photometry reveal a quasi-periodic (P=4.87±0.01h) variability with a maximum peak-peak amplitude of ∼11% and strong night-to-night evolution. We attribute this variability to the rotational modulation of fast-evolving weather patterns in the atmosphere of the coolest component (∼T1-type) of the binary. No periodic signal is detected for the hottest component (∼L8-type). For both brown dwarfs, our data allow us to firmly discard any unique transit during our observations for planets ≥2R_⊕. For orbital periods smaller than ∼9.5h, transiting planets are excluded down to an Earth-size.

Abstract Copyright: ∼

Journal keyword(s): brown dwarfs - stars: individual: WISE-J104915.57-531906.1 - solar neighborhood - techniques: photometric

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	NAME Luhman 16	**	10 49 18.91536	-53 19 10.0776		16.86	16.20		14.95	L7.5+T0.5	120	0

Query : 2013A&A...555L...5G

Basic data :

NAME Luhman 16 -- Double or Multiple Star

** (2013ApJ,**,...), * (UCAC4,CNS5,...), PM* (2014ApJ), NIR (DENIS,2MASS), MIR (WISEA,WISE), BD* (2013ApJ)

10 49 18.91536 -53 19 10.0776 (Near-IR) [ 60 60 90 ] C 2003yCat.2246....0C

10 47 28.02092 -53 03 33.7440 [ 60 60 90 ]

285.18855711 +05.29248624 [ 60 60 90 ]

-2767.502 356.856 [0.147 0.150 90] B 2018A&A...618A.111L

501.557 [0.082] B 2018A&A...618A.111L

L7.5+T0.5 C 2013ApJ...772..129B

B 16.86 [0.11] E 2012yCat.1322....0Z

V 16.20 [0.01] E 2012yCat.1322....0Z

G 16.919827 [0.006787] C 2022yCat.1355....0G

I 14.95 [0.04] C 2005yCat.2263....0D

J 10.733 [0.026] C 2003yCat.2246....0C

H 9.563 [0.029] C 2003yCat.2246....0C

K 8.841 [0.021] C 2003yCat.2246....0C

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`UCAC4 184-061368`	`DENIS J104919.0-531910`	`NAME Luhman 16`	`WISEA J104915.52-531906.1`
` LUH 16`**	`2MASS J10491891-5319100`	`TIC 119862115`	`WISE J104915.57-531906.1`
`CNS5 2653`	`NAME WISE J1049-5319AB`	`WDS J10493-5319AB`	`Gaia DR3 5353626573555863424`

References (120 between 1850 and 2026) (Total 120)
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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`UCAC4 184-061368`	`DENIS J104919.0-531910`	`2MASS J10491891-5319100`	`WDS J10493-5319AB`	`WISEA J104915.52-531906.1`
`WISE J104915.57-531906.1`	`Gaia DR3 5353626573555863424`

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