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Cold HI in faint dwarf galaxies
Narendra Nath Patra, Jayaram N. Chengalur, Igor D. Karachentsev +2
We present the results of a study of the amount and distribution of cold atomic gas, as well its correlation with recent star formation in a sample of extremely faint dwarf irregul…
Andromeda IV, a solitary gas-rich dwarf galaxy
I. D. Karachentsev, Jayaram. N. Chengalur, R. B. Tully +4
Observations are presented of the isolated dwarf irregular galaxy And IV made with the Hubble Space Telescope Advanced Camera for Surveys and the Giant Metrewave Radio Telescope in…
Extending the survey for the local volume galaxies
I. D. Karachentsev, S. S. Kaisin, E. I. Kaisina
Images in the emission line are presented for 35 nearby objects observed with the 6-m BTA telescope. Three of them, NGC 3377, NGC 3384, and NGC 3390, are bright E and S0 galax…
New Low Surface Brightness Dwarf Galaxies Detected Around Nearby Spirals
I. D. Karachentsev, P. Riepe, T. Zilch +14
We conduct a survey of low surface brightness (LSB) satellite galaxies around the Local Volume massive spirals using long exposures with small amateur telescopes. We identified 27…
6-meter telescope observations of three dwarf spheroidal galaxies with very low surface brightness
D. I. Makarov, M. E. Sharina, V. E. Karachentseva +1
Dwarf spheroidal galaxies (dSphs) are mostly investigated in the Local Group. DSphs are difficult targets for observations because of their small size and very low surface brightne…
Dark energy domination in the local flow of giant galaxies
A. D. Chernin, N. V. Emelyanov, I. D. Karachentsev
A dozen most luminous galaxies at distances up to 10 Mpc from the Local Group are moving away from the group forming the local expansion flow of giants. We use recent Hubble Space…