H-alpha imaging of the Local Volume galaxies I. The NGC 6946 galaxy group

Details H-alpha imaging of the Local Volume galaxies I. The NGC 6946 galaxy group H-alpha imaging of the Local Volume galaxies I. The NGC 6946 galaxy group

2005-02-21

arxiv.org/abs/astro-ph/0502402v1

Astronomy and Astrophysics

Astrophysics

4 pages, 1 figure. accepted to Research Note in Astronomy and Astrophysics

Scientific paper

10.1051/0004-6361:20052673

We present new H-alpha imaging of all known dwarf irregular companions to NGC 6946: UGC 11583, KK 251, KK 252, KKR 55, KKR 56, Cepheus 1, KKR 59, and KKR 60. The galaxies span a range of blue absolute magnitudes of [-13.6, -17.6], relative gas content of [0.1, 2.5] M_sun/L_sun, current star formation activity of [0.2, 5.2]10^-2 M_sun yr^-1, and timescale to exhaust the current gas supply of [6, 86] Gyr.

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