High-Resolution Optical Spectroscopy of the R Coronae Borealis Star V532 Ophiuchi at Maximum Light

High-resolution optical spectra of the R Coronae Borealis (RCB) star V532 Oph at light maximum are discussed. The absolute visual magnitude M sub(V) of the star is found to be -4.9 + or - 0.5. The elemental abundances suggest the star belongs to the majority class of RCB stars but is among the most...

Full description

Saved in:
Bibliographic Details
Published in:Publications of the Astronomical Society of the Pacific 2014-09, Vol.126 (943), p.813-820
Main Authors: Rao, N Kameswara, Lambert, David L, Woolf, Vincent M, Hema, B R
Format: Article
Language:English
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:High-resolution optical spectra of the R Coronae Borealis (RCB) star V532 Oph at light maximum are discussed. The absolute visual magnitude M sub(V) of the star is found to be -4.9 + or - 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 sub(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.
ISSN:0004-6280
1538-3873
DOI:10.1086/678129