We describe observations of the Herbig Ae candidate HD 36112 including high
-resolution spectroscopy of photospheric and circumstellar lines, multi-col
our photometry and polarimetry. These observations reveal that many feature
s of the observational appearance of HD 36112 are similar to those of 'clas
sical' Herbig Ae stars. Among these are: the far IR excess, manifestations
of the high-temperature zone in the inner envelope, distinctive types of th
e H alpha profile variations, and variable multi-component polarization and
brightness parameters.
The fundamental characteristics of the star have been determined. In partic
ular, HD 36112 proves to be an unreddened A8 v of age t similar to 5 divide
d by 10 x 10(6) years. This means, that the star is still at the PMS phase
of evolution, but close to the ZAMS. The anomalous abundances of barium and
silicon discovered in HD 36112 allow to suggest that chemical anomalies ca
n arise already at the early stages of stellar evolution.
The totality of observed properties of HD 36112 give evidence of complicate
d structure of the gaseous-dusty envelope around this object, including the
variable stellar wind with an extended acceleration zone, as well as large
and small-grained dust, located in the orthogonal planes.