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Draining the Local Void
Luca Rizzi, R. Brent Tully, Edward J. Shaya +2
Two galaxies that lie deep within the Local Void provide a test of the expectation that voids expand. The modest (M_B~-14) HI bearing dwarf galaxies ALFAZOAJ1952+1428 and KK246 hav…
The local Tully-Fisher relation for dwarf galaxies
Igor D. Karachentsev, Elena I. Kaisina, Olga G. Kashibadze
We study different incarnations of the Tully-Fisher (TF) relation for the Local Volume (LV) galaxies taken from Updated Nearby Galaxy Catalog. The UNGC sample contains 656 galaxies…
The Dragonfly Nearby Galaxies Survey. II. Ultra diffuse galaxies near the elliptical galaxy NGC 5485
Allison Merritt, Pieter van Dokkum, Shany Danieli +4
We present the unexpected discovery of four ultra diffuse galaxies (UDGs) in a group environment. We recently identified seven extremely low surface brightness galaxies in the vici…
Star formation history of And XVIII: a dwarf spheroidal galaxy in isolation
L. N. Makarova, D. I. Makarov, I. D. Karachentsev +2
We present a photometric study of the Andromeda XVIII dwarf spheroidal galaxy associated with M31, and situated well outside of the virial radius of the M31 halo. The galaxy was re…
FIGGS2: An HI survey of extremely faint irregular galaxies
Narendra Nath Patra, Jayaram N. Chengalur, Igor D. Karachentsev +1
We present the observations and first results from the FIGGS2 survey. FIGGS2 is an extension of the earlier Faint Irregular Galaxies GMRT survey (FIGGS) towards faint luminosity en…
Ultra-Flat Galaxies Selected from RFGC Catalog. II. Orbital Estimates of Halo Masses
I. D. Karachentsev, V. E. Karachentseva, Yu. N. Kudrya
We used the Revised Flat Galaxy Catalog (RFGC) to select 817 ultra-flat (UF) edge-on disk galaxies with blue and red apparent axial ratios of and .…