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astro-ph2004★ 1 cited
Calibrated Tully-Fisher relations for edge-on galaxies in the BVRI system
O. Stanchev, P. Nedialkov, Ts. Georgiev
Calibrated Tully-Fisher relations ''absolute magnitude - HI line width'' for spiral galaxies oriented edge-on are derived from published data. The slope of the linear fits, especia…
astro-ph2001
Romano's star in M33 - LBV candidate or LBV?
R. Kurtev, O. Sholukhova, J. Borissova +1
We present the light curve of Luminous Blue Variable candidate star GR290 (Romano's star) in M33. The photographic photometry was made in photographic plates taken in B band of the…
astro-ph1999
Study of the Extinction Law in M31 and Selection of Red Supergiants
P. Nedialkov, T. Veltchev
An average value of the total-to-selective-extinction ratio R_V=3.8 +/- 0.4 in M31 is obtained by means of two independent methods and by use of the analytical formula of Cardelli,…