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KDG218, a nearby ultra-diffuse galaxy
Sharina, M. E.; Karachentsev, I. D.; Makarova, L. N. +1 more
We present properties of the low-surface-brightness galaxy KDG218 observed with the HST/ACS. The galaxy has a half-light (effective) diameter of ae = 47″ and a central surface brightness of SBV(0) = 24.m4/□″. The galaxy remains unresolved with the HST/ACS, which implies its distance of D > 13.1 Mpc and linear ef…
Distances to dwarf galaxies of the Canes Venatici I cloud
Makarova, L. N.; Makarov, D. I.; Uklein, R. I.
We determined the spatial structure of the scattered concentration of galaxies in the Canes Venatici constellation. We redefined the distances for 30 galaxies of this region using the deep images from the Hubble Space Telescope archive with the WFPC2 and ACS cameras.We carried out a high-precision stellar photometry of the resolved stars in these …
A globular cluster in the dwarf galaxy Sextans B
Sharina, M. E.; Puzia, T. H.; Krylatyh, A. S.
We present spectroscopic observations of a massive globular cluster in the dwarf irregular galaxy Sextans B, discovered by us on the Hubble Space Telescope Wide Field and Planetary Camera 2 (HST WFPC2) images. Long-slit spectra were obtained with the SCORPIO spectrograph on the 6-m telescope at the Special Astrophysical Observatory of the Russian …