2014A&A...567A..43S


Query : 2014A&A...567A..43S

2014A&A...567A..43S - Astronomy and Astrophysics, volume 567A, 43-43 (2014/7-1)

WISEA J064750.85-154616.4: a new nearby L/T transition dwarf.

SCHOLZ R.-D., BIHAIN G. and STORM J.

Abstract (from CDS):

Our aim is to detect and classify previously overlooked brown dwarfs in the solar neighbourhood. We performed a proper motion search among bright sources observed with the Wide-field Infrared Survey Explorer (WISE) that are also seen in the Two Micron All Sky Survey (2MASS). Our candidates appear according to their red J-Ks colours as nearby late-L dwarf candidates. Low-resolution near-infrared (NIR) classification spectroscopy in the HK band allowed us to get spectroscopic distance and tangential velocity estimates. We have discovered a new L9.5 dwarf, WISEA J064750.85-154616.4, at a spectroscopic distance of about 14pc and with a tangential velocity of about 11km/s, typical of the Galactic thin disc population. We have confirmed another recently found L/T transition object at about 10pc, WISEA J140533.13+835030.7, which we classified as L8 (NIR).

Abstract Copyright:

Journal keyword(s): astrometry - proper motions - stars: distances - stars: kinematics and dynamics - brown dwarfs - solar neighborhood

Simbad objects: 10

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Number of rows : 10
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024
#notes
1 DENIS J025503.3-470049 BD* 02 55 03.6927058871 -47 00 51.356903955     22.921 19.906 17.454 L9 145 0
2 2MASSI J0328426+230205 BD* 03 28 42.65592 +23 02 05.1900           L9.5 47 0
3 2MASS J04214429+1929454 * 04 21 44.294 +19 29 45.44           M0 2 0
4 V* T Tau TT* 04 21 59.4319873992 +19 32 06.432393336   11.22 10.12 9.80   K0IV/Ve 1404 1
5 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 4429 0
6 2MASS J06475076-1546179 BD* 06 47 50.76264 -15 46 17.9976           L9.5 7 0
7 2MASS J09205549+4539058 BD* 09 20 55.4842057539 +45 39 05.071206273           L9.5 13 0
8 2MASS J12074717+0244249 BD* 12 07 47.17296 +02 44 24.9576           L6.5+T2.5 66 0
9 2MASS J14053729+8350248 BD* 14 05 37.2258412821 +83 50 24.756984716           L8 10 0
10 2MASS J16322911+1904407 BD* 16 32 29.11416 +19 04 40.7136       22.42 19.98 L8V 131 0

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