Abstract
A list of 171 stars in the galaxy M33 is presented. The stars could be considered as candidates for unique objects, such as SS 433, S Dor, P Cyg stars and possibly new kinds of peculiar objects. All these stars have been selected on the basis of the similarity to SS 433, free from interstellar absorption: OB star with strongHα emission or with HeII λ4686 and CIII, NIII λλ4630 - 4660 emission lines; a hot star inside a supernovae remnant or radio nebula. The variability of these stars has been used as an additional criterion of the selection. It is important to carry out spectral observations of the presented stars, which will allow us to select stars with intrinsicHα emission.
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Fabrika, S., Sholukhova, O. A search for unique objects in nearby galaxies. Astrophys Space Sci 226, 229–244 (1995). https://doi.org/10.1007/BF00627373
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DOI: https://doi.org/10.1007/BF00627373