VizieR Online Data Catalog: New Miras in Galactic Bulge (Hummerich+ 2012)

500 previously unrecorded Mira variables were found during an inspection of R-band lightcurves from the MACHO Galactic Bulge fields (http://macho.anu.edu.au/). This research continues the search for new Miras in the MACHO database (Bernhard, 2011PZP....11...12B). The MACHO 1.3m telescope is situated at Mount Stromlo in Australia and uses B and R filters in combination with eight 2048*2048 CCD cameras. Calculation of MACHO R magnitudes was done from the given instrumental R magnitudes using the formula given in Alcock et al. (1999PASP..111.1539A). Astrometric positions and near-infrared color indices were derived from the 2MASS catalog (Skrutskie et al. 2006, VII/233). Only objects with an amplitude >2mag (Rc) were taken into consideration. In addition, all lightcurves have been inspected visually; objects with significant changes in amplitude, mean magnitude and / or period suggesting semi-regularity have been rejected. Each object was checked against the Strasbourg CDS Vizier service and the International Variable Star Index (VSX) for pre-existence as a Mira-type star in variability catalogues. Summary data for all new Mira variables are listed in Table 1. (:) denotes uncertain value. Lightcurves, folded lightcurves and further details are available via AAVSO-VSX (http://www.aavso.org/vsx/).

(1 data file).