  The sample of candidate faint high latitude carbon (FHLC) stars chosen from
the Hamburg/ESO survey is a potential source to search for objects of rare
types. From medium resolution spectral analyses of about 250 objects from this
sample, the object HE 1015-2050, was found to be a hydrogen-deficient carbon
(HdC) star. Apart from U Aquarii, HE 1015-2050 is the only example, till now,
of a Galactic cool HdC star that is characterized by strong spectral features
of light s-process element Sr, and weak features of heavy s-process elements
such as Ba. This object, with its enhanced carbon and hydrogen-deficiency,
together with anomalous s- process spectral features, poses a challenge as far
as the understanding of its formation mechanism is concerned. We discuss
possible mechanisms for its formation in the framework of existing scenarios of
HdC star formation.
