Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aas...20311526d&link_type=abstract
American Astronomical Society Meeting 203, #115.26; Bulletin of the American Astronomical Society, Vol. 35, p.1396
Astronomy and Astrophysics
Astronomy
Scientific paper
We are investigating the star formation histories and evolution of 36 dwarf irregular galaxies that reside in one of two different environments. The objects are classified as either high-density (neighbor galaxy within 250 kpc) or low-density (no known neighbors within 1 Mpc). These low-mass systems, being more reactive to external perturbations, are a type of ''accelerated experiment'' in galaxy evolution, making them ideal targets for a study on the effects environment has on star formation.
To date, we have obtained H-alpha and R-band images for 9 of the 36 galaxies, as well as J-band images for 5 of the galaxies. We present analysis of the data thus obtained and discuss the capability of acquiring near-infrared images of these systems. UBVRI and H-alpha imaging are planned for all 36 galaxies. In addition, optical spectroscopy will be obtained for a select sub-sample of targets.
Dunn Jacqueline M.
Fanelli Michael N.
Marcum Pamela Marie
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