Detection of an OH 1665-MHz Maser in M33
  We report one OH 1665-MHz detection in new observations with the NSF's Karl
G. Jansky Very Large Array. To the authors' knowledge, this is the first OH
maser detection in M33. The source occurs at a position of
$\alpha=23.50069(9)^{\circ}$ and $\delta = 30.67984(9)^{\circ}$ (J2000) and is
unresolved at the beam size ($9."7$). Two H$\alpha$ sources from the Moody et
al. (2017) catalogue --- C1-1 and C1-2 --- are consistent within the beam size.
We find a peak flux density of 24.1 mJy in a 1.5 km s$^{-1}$ channel. At the
distance of M33, the source's specific luminosity is consistent with the
brightest Galactic OH 1665-MHz masers.
