EDP Sciences Journals List
Advanced Search
Subscriber Authentication Point
Home All issues Volume 434/3 Article
Free access article

Issue A&A
Volume 434, Number 3, May II 2005
Page(s) 935 - 938
Section Extragalactic astronomy
DOI http://dx.doi.org/10.1051/0004-6361:20052673



A&A 434, 935-938 (2005)
DOI: 10.1051/0004-6361:20052673

Research Note

H$\alpha$ imaging of the local volume galaxies

I. The NGC 6946 galaxy group
I. D. Karachentsev1, S. S. Kajsin1, Z. Tsvetanov2 and H. Ford2

1  Special Astrophysical Observatory, Russian Academy of Sciences, N.Arkhyz, KChR, 369167, Russia
    e-mail: ikar@luna.sao.ru
2  Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD 21218, USA

(Received 11 January 2005 / Accepted 11 February 2005)

Abstract
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] $M_{\odot}/L_{\odot}$, current star formation activity of $[0.2, ~5.2]\times 10^{-2} ~M_{\odot}$ yr-1, and timescale to exhaust the current gas supply of [6, 86] Gyr.


Key words: galaxies: dwarf -- stars: formation

SIMBAD Objects



© ESO 2005


What is OpenURL?

The OpenURL standard is a protocol for transmission of metadata describing the resource that you wish to access. An OpenURL link contains article metadata and directs it to the OpenURL server of your choice. The OpenURL server can provide access to the resource and also offer complementary services (specific search engine, export of references...). The OpenURL link can be generated by different means.
  • If your librarian has set up your subscription with an OpenURL resolver, OpenURL links appear automatically on the abstract pages.
  • You can define your own OpenURL resolver with your EDPS Account. In this case your choice will be given priority over that of your library.
  • You can use an add-on for your browser (Firefox or I.E.) to display OpenURL links on a page (see http://www.openly.com/openurlref/). You should disable this module if you wish to use the OpenURL server that you or your library have defined.