In this paper , we present a study of the proto-planetary nebula ( PPN ) IRAS 06530 - 0213 based on low- and high-resolution spectra .
The low-resolution spectrum shows that star is an F5 supergiant with molecular C _ { 2 } and C _ { 3 } and enhanced s-process lines .
From the high-resolution spectra , the following atmospheric parameters were determined : T _ { eff } = 6900 K , log g = 1.0 and \xi _ { t } = 4.5 .
Abundance analysis shows that IRAS 06530 - 0213 is metal-poor ( [ Fe/H ] = - 0.9 ) and overabundant in carbon ( [ C/Fe ] =1.3 ) , nitrogen ( [ N/Fe ] =1.0 ) , and s-process elements ( [ s-process/Fe ] =1.9 ) , indicating AGB nucleosynthesis and deep convective mixing .
From the analysis of circumstellar C _ { 2 } and CN molecular bands in the spectrum of IRAS 06530 - 0213 , an envelope expansion velocity of V _ { exp } = 14 \pm 1 km s ^ { -1 } 
was determined , a typical value for post-AGB stars .
Also typical of PPNs is the double-peaked spectral energy distribution .
The properties of both the photosphere and circumstellar envelope suggest that IRAS 06530 - 0213 is unambiguously a low-mass , carbon-rich PPN .
For comparison purposes , new , high-resolution spectra of the well-known PPN HD 56126 ( IRAS 07134+1005 ) was also analyzed and compared with previous results .