Abstract:
High-resolution optical spectra of the R Coronae Borealis (RCB) star V532 Oph at light maximum
are discussed. The absolute visual magnitude M
V
of the star is found to be
4
:
9
0
:
5
. The elemental abundances
suggest the star belongs to the majority class of RCB stars but is among the most O-poor of this class with mild
enhancements of heavy elements Y, Zr, Ba, and La. The C
2
Swan bands are weak in V532 Oph relative to
R
CrB.
Other aspects of the high-resolution spectrum confirm that V532 Oph is representative of majority RCBs, i.e., the
radial velocity is variable, circumstellar material is present, and the photosphere feeds a high-velocity stellar wind.
