The ATCA/VLA OH 1612 MHz survey. I. Observations of the Galactic Bulge Region J/A+AS/122/79 J/A+AS/122/79 Galactic Bulge Region OH 1612MHz survey. I. The ATCA/VLA OH 1612 MHz survey. I. Observations of the Galactic Bulge Region M N Sevenster J M Chapman H J Habing N E B Killeen M Lindqvist Astron. Astrophys. Suppl. Ser. 122 79 1997 1997A&AS..122...79S Masers Radio lines Galaxy: center Galaxy: stellar content radio lines: stars stars: AGB and post-AGB surveys techniques: image processing We present observations of the region between |l|<=10{deg} and |b|<=3{deg} in the OH 1612.231MHz line, taken in 1993 October and November with the Australia Telescope Compact Array. The region was systematically searched for OH/IR stars and was covered completely with 539 pointing centres separated by 30'. The size of the dataset calls for a special reduction technique that is fast, reliable and minimizes the output (positions and velocities of possible stars only). Having developed such a reduction method we found 307 OH masing objects, 145 of which are new detections. Out of these, 248 have a standard double-peaked spectral profile, 55 a single-peaked profile and 4 have nonstandard or irregular profiles. In this article we analyse the data statistically and give classifications and identifications with known sources where possible. The astrophysical, kinematical, morphological and dynamical properties of subsets of the data will be addressed in future articles. These observations are part of a larger survey, covering |l|<=45{deg} and |b|<=3{deg}, with the Australia Telescope Compact Array and the Very Large Array. The electronic version of this paper, that includes table and spectra, can be obtained from http://www.ed-phys.fr.
Compact OH-maser sources No Source number --- Name Source name (based on galactic longitude and latitude) --- Type Spectrum type --- RAh Right ascension J2000 h RAm Right ascension J2000 min RAs Right ascension J2000 s DE- Declination sign --- DEd Declination J2000 deg DEm Declination J2000 arcmin DEs Declination J2000 arcsec Delta Position scatter arcsec R Offset from pointing centre arcmin VL Velocity blue-shifted peak km/s VH Velocity red-shifted peak km/s VC Velocity central star km/s VE Outflow velocity shell km/s SL Flux density blue-shifted peak Jy SH Flux density red-shifted peak Jy Rms Rms noise in empty cubes mJy Ref Number reference for previous detection --- IRAS Name of nearest IRAS point source <II/125> --- N Distance to nearest IRAS PS as fraction of IRAS error ellipse --- table1.texLaTeX version of table1 M.N. Sevenster Sterrewacht Leiden, NL 1996Jul19 J_A+AS_122_79.xml