Physical Parameters in Circumnuclear Star Forming Regions

Details Physical Parameters in Circumnuclear Star Forming Regions Physical Parameters in Circumnuclear Star Forming Regions

Aug 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008rmxac..33..172h&link_type=abstract

Massive Stars: Fundamental Parameters and Circumstellar Interactions (Eds. P. Benaglia, G. L. Bosch, & C. E. Cappa) Revista Mexi

Astronomy and Astrophysics

Astronomy

Galaxies: Abundances, Galaxies: Individual (Ngc 2903, Ngc 3351, Ngc 3504), Galaxies: Kinematics And Dynamics, Galaxies: Starburst, Galaxies: Star Clusters, Hii Regions

Scientific paper

We present a spectrophotometric study of circumnuclear star forming regions (CNSFRs) in the spiral galaxies: NGC 2903, NGC 3351 and NGC 3504, all of them of over solar metallicity according to standard empirical calibrations. The low excitation of the regions, as evidenced by the weakness of the [OIII] 5007 Å line, precludes the detection and measurement of the auroral [OIII] 4363 Å necessary for the derivation of the electron temperature. It is therefore impossible to obtain a direct determination of the oxygen abundances. Empirical calibrations have to be used instead.

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