VMC J021140.41-735320.4 -- an extremely red L dwarf candidate member of
  the AB Doradus young moving group
  We report the discovery of VMC J021140.41-735320.4, a faint ($J=19.9$ mag)
and extremely red ($J-K_s=3.0$ mag, $W1-W2=0.45$ mag, $J-W2=4.7$ mag) high
proper motion object in front of the Magellanic Bridge region. It is even
redder in the near-infrared than the reddest L7 dwarfs ($J-K_s \gtrsim 2.8$
mag) found in the survey of Schneider et al. (2017) and its colours do also not
match exactly those of other peculiar red L7.5 dwarfs. Therefore, we consider
its photometric distance estimate of about 73 pc as uncertain. A preliminary
combined proper motion and parallax solution involving 20 epochs from the
Visible and Infrared Survey Telescope for Astronomy (VISTA) survey of the
Magellanic Clouds (VMC), the VISTA hemisphere survey (VHS), and the Wide-field
Infrared Survey Explorer (WISE) yields $\mu_{\alpha}\cos{\delta}=+74.3\pm3.4$
mas/yr, $\mu_{\delta}=+22.3\pm3.4$ mas/yr, and $\pi=21.0\pm7.1$ mas. Applying
the BANYAN tool (http://www.exoplanetes.umontreal.ca/banyan/) to these results
we find a $\approx$68% membership probability of this object in the AB Doradus
young moving group (YMG). With its trignometric distance of $\approx$48 pc, VMC
J021140.41-735320.4 has a similar absolute magnitude of $M_{K_s}\approx13.4$
mag as the planetary mass companion of another AB Doradus YMG member candidate,
2MASS J22362452+4751425. Follow-up classification spectroscopy and astrometric
monitoring are recommended.
