Local Benchmarks for the Evolution of Major-Merger Galaxies (II) --Palomar H_alpha/H_beta Observations of a K-Band Selected Sample

Details Local Benchmarks for the Evolution of Major-Merger Galaxies (II) --Palomar H_alpha/H_beta Observations of a K-Band Selected Sample Local Benchmarks for the Evolution of Major-Merger Galaxies (II) --Palomar H_alpha/H_beta Observations of a K-Band Selected Sample

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...209.0506c&link_type=abstract

2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #05.06; Bulletin of the American Astronomical Society, V

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As part of a multi-wavelength study of a sample of K-Band selected major-merger galaxy pairs at z=0, narrow band H_alpha and H_beta imaging observations have been carried out using Palomar 200" telescope. The H_alpha emission, once corrected for the dust extinction, is one of the best measurements of the star formation rate (SFR). As demonstrated in the literature, the combined H_alpha and H_beta imaging can result in a reliable extinction map. Complementary to the Spitzer observations of the same sample (see Xu et al., this volume), we aim to obtain an unbiased statistics of the SFR and its spatial distribution in these interacting galaxy systems. Furthermore, fitting the multiband (ugrizJHK) images and optical spectrographs in the SDSS-DR3 and 2MASS database with the stellar synthesis model (Bruzual & Charlot 2003) and dust extinction model (Calzetti 1994) provides additional constraints to the star formation history of these major-merger pairs.

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