Discovery of Five New R Coronae Borealis Stars in the MACHO Galactic Bulge Lightcurve Database

Details Discovery of Five New R Coronae Borealis Stars in the MACHO Galactic Bulge Lightcurve Database Discovery of Five New R Coronae Borealis Stars in the MACHO Galactic Bulge Lightcurve Database

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...205.5420z&link_type=abstract

American Astronomical Society Meeting 205, #54.20; Bulletin of the American Astronomical Society, Vol. 36, p.1430

Astronomy and Astrophysics

Astronomy

Scientific paper

We have identified 5 new R Coronae Borealis (RCB) stars in the Galactic bulge, using the MACHO photometry database, raising the total number of known Galactic RCB stars to 40. We have obtained spectra to confirm the identifications. The fact that four out of the 5 newly identified RCB stars are ``cool'' rather than ``warm'' suggests the preponderance of warm RCB stars among the existing sample may be a selection bias. Using the volume of the surveyed field, we estimate the total number of Galactic RCB stars to be about 700. This project was supported by the NSF/REU grant AS T-0097694 and the Nantucket Maria Mitchell Association.

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