235 citations · 1k across the 34 of their papers we have counts for
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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…
BVR photometry of the resolved dwarf galaxy Ho IX
Tsvetan B. Georgiev, Dominik J. Bomans
We present BVR CCD photometry down to limiting magnitude B=23.5 mag for 232 starlike objects and 11 diffuse objects in a 5.4' x 5.4' field of Ho IX. The galaxy is a gas-rich irregu…
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…
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,…