NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-03-24 T08:28:36 PDT
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For refcode 2004A&A...414...23J:
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Copyright by European Southern Observatory (ESO). Reproduced by permission
2004A&A...414...23J The H {alpha} galaxy survey I. The galaxy sample, H {alpha} narrow-band observations and star formation parameters for 334 galaxies P. A. James, N. S. Shane, J. E. Beckman, A. Cardwell, C. A. Collins, J. Etherton, R. S. de Jong, K. Fathi, J. H. Knapen, R. F. Peletier, S. M. Percival, D. L. Pollacco, M. S. Seigar, S. Stedman and I. A. Steele Received 25 November 2002 / Accepted 1 October 2003 We discuss the selection and observations of a large sample of nearby galaxies, which we are using to quantify the star formation activity in the local Universe. The sample consists of 334 galaxies across all Hubble types from S0/a to Im and with recession velocities of between 0 and 3000 km s^-1^. The basic data for each galaxy are narrow band H {alpha} +[NII] and R-band imaging, from which we derive star formation rates, H {alpha} +[NII] equivalent widths and surface brightnesses, and R-band total magnitudes. A strong correlation is found between total star formation rate and Hubble type, with the strongest star formation in isolated galaxies occurring in Sc and Sbc types. More surprisingly, no significant trend is found between H {alpha} +[NII] equivalent width and galaxy R-band luminosity. More detailed analyses of the data set presented here will be described in subsequent papers. Keywords: galaxies: general, galaxies: spiral, galaxies: irregular, galaxies: fundamental parameters, galaxies: photometry, galaxies: statistics
Retrieve 333 NED objects in this reference.
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