H-alpha Survey of the Local Volume: Isolated Southern Galaxies

Details H-alpha Survey of the Local Volume: Isolated Southern Galaxies H-alpha Survey of the Local Volume: Isolated Southern Galaxies

2007-08-09

arxiv.org/abs/0708.1227v1

Astron.Lett.33:283-291,2007

Astronomy and Astrophysics

Astrophysics

9 pages, 3 figures

Scientific paper

10.1134/S1063773707050015

We present our H-alpha observations of 11 isolated southern galaxies: SDIG, PGC 51659, E 222-010, E 272-025, E 137-018, IC 4662, Sag DIG, IC 5052, IC 5152, UGCA 438, and E149-003, with distances from 1 to 7 Mpc. We have determined the total H-alpha fluxes from these galaxies. The star formation rates in these galaxies range from 10^{-1} (IC 4662) to 10^{-4}_{\odot}/yr (SDIG) and the gas depletion time at the observed star formation rates lies within the range from 1/6 to 24 Hubble times H_0^{-1} .

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