Context :

Aims : Among the known Ap stars , HD 101065 is probably one of the most interesting objects , demonstrating very rich spectra of rare-earth elements ( REE ) .
Strongly peculiar photometric parameters of this star that can not be fully reproduced by any modern theoretical calculations , even those accounting for realistic chemistry of its atmosphere .
In this study we investigate a role of missing REE line opacity and construct a self-consistent atmospheric model based on accurate abundance and chemical stratification analysis .

Methods : We employed the LLmodels stellar model atmosphere code together with DDAFit and Synthmag software packages to derive homogeneous and stratified abundances for 52 chemical elements and to construct a self-consistent model of HD 101065 atmosphere .
The opacity in REE lines is accounted for in details , by using up-to-date extensive theoretical calculations .

Results : We show that REE elements play a key role in the radiative energy balance in the atmosphere of HD 101065 , leading to the strong suppression of the Balmer jump and energy redistribution very different from that of normal stars .
Introducing new line lists of REEs allowed us to reproduce , for the first time , spectral energy distribution of HD 101065 and achieve a better agreement between the unusually small observed Strömgren c _ { 1 } index and the model predictions .
Using combined photometric and spectroscopic approaches and based on the iterative procedure of abundance and stratification analysis we find effective temperature of HD 101065 to be T _ { eff } = 6400 K .

Conclusions :