A photometric study of the bright stars in M33

Details A photometric study of the bright stars in M33 A photometric study of the bright stars in M33

May 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986ap%26ss.122..235k&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 122, no. 2, May 1986, p. 235-245.

Astronomy and Astrophysics

Astrophysics

7

Blue Stars, Galactic Structure, Stellar Luminosity, Stellar Spectrophotometry, Ubv Spectra, Astronomical Photography, Color-Magnitude Diagram, Stellar Magnitude

Scientific paper

Using the 2-m RCC telescope in the Rhodopa Mountains (Bulgaria), the UBV photometry of 105 bright stars was performed, and the U magnitudes of 36 bright stars in the M33 galaxy were obtained, thus facilitating the separation of member stars from the foreground. It is shown that the vast majority of the bright blue stars in M33 (with V greater than 15 m), have a negative value of the (U-B) color (which could reach -1.0), and a value of the (B-V) between -0.4 and 0.4. The existence of objects with an unusual combination of colors, (B-V) greater than 0.5 and strongly negative (U-B), is confirmed.

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