Spectroscopy of blue stellar objects

Astronomy and Astrophysics – Astronomy

Scientific paper

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Astronomical Spectroscopy, Blue Stars, Quasars, Stellar Spectrophotometry, Black Body Radiation, Magnitude, Radiant Flux Density, Red Shift, Ultraviolet Spectra

Scientific paper

Spectra have been obtained for the brightest objects from a list of blue stellar objects found in a Palomar Schmidt field centered on Kapteyn Selected Area 28. Four of the objects presented here comprise a complete sample of objects with UV excess and magnitudes brighter than or equal to B = 16.3 mag. The object with the largest UV excess is a previously undiscovered quasar of redshift 0.25 and cataloged B magnitude of 15.6 mag. The object shows some evidence of variability. Spectroscopy for one bright object in a companion field centered on Selected Area 29 is also presented.

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