Extending the Hα survey for the local volume galaxies
Abstract
Images in the Hα 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 galaxies, one is an edge-on Sd galaxy UGC 7321, two are remote globular clusters associated with M 31, and the rest are dwarf galaxies of morphological types dIr, dTr, dSph, BCD, and Sm. The measured Hα fluxes are used to estimate the integral (SFR) and specific (sSFR) star formation rates for these galaxies. The values of [sSFR] for all these objects lie below a limit of -0.4(Gyr-1). We note that the emission disk for the nearest superthin edge-on galaxy UGC 7321 has an extremely large axis ratio of a/b = 38.
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