An Infrared Stellar Library for Spectral Synthesis of Starburst Galaxies

Details An Infrared Stellar Library for Spectral Synthesis of Starburst Galaxies An Infrared Stellar Library for Spectral Synthesis of Starburst Galaxies

May 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aas...19513603i&link_type=abstract

American Astronomical Society, 195th AAS Meeting, #136.03; Bulletin of the American Astronomical Society, Vol. 32, p.884

Astronomy and Astrophysics

Astronomy

Scientific paper

Infrared wavelengths provide a unique opportunity to study the most obscured stellar populations in starburst galaxies. Recent development of infrared instrumentation has made it possible to measure weak metal absorption features. We are developing diagnostic tools for the starburst age, metallicity, and initial mass function using these features. We have obtained high resolution (R 2000 at H(1.6μm ) & R 3000 at K(2.2μm )) spectra of over 200 red giants and supergiants. These stars dominate the infrared emission in starbursts. Our library spans a range of effective temperatures, and covers abundances from [Fe/H] = -2.2 to +0.3. The strength of a number of spectral features was calibrated against stellar parameters. We will include these calibrations in an evolutionary population synthesis model.

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