The Edinburgh-Cape Blue Object Survey -- II. Zone 1 -- the North Galactic Cap

Abstract

Results for Zone 1 of the Edinburgh-Cape (EC) Blue Object Survey are presented. This zone covers that part of the North Galactic Cap more than ∼ 30° from the Galactic plane and south of about declination (although a few fields north of this declination are included). The zone effectively complements the Palomar—Green Survey in the North Galactic Cap, although the EC Survey should be more complete to a fainter limit (B = 16.5 mag) and to somewhat redder stars (U-B bluer than about −0.4). Zone 1 covers approximately 1560 deg² and contains 675 blue objects for which we list equatorial coordinates accurate to ∼1 arcsec, UBV photoelectric photometry, and spectral types determined from moderate-dispersion (100 Å mm⁻¹) spectrograms.