The Chemical Composition of the Small Magellanic Cloud from Infrared Spectroscopy of Red-Giant Stars

Details The Chemical Composition of the Small Magellanic Cloud from Infrared Spectroscopy of Red-Giant Stars The Chemical Composition of the Small Magellanic Cloud from Infrared Spectroscopy of Red-Giant Stars

Aug 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002noao.prop..186s&link_type=abstract

NOAO Proposal ID #2002B-0186

Computer Science

Scientific paper

High-resolution infrared spectroscopy will be conducted on a sample of Small Magellanic Cloud (SMC) red giants with Gemini South plus Phoenix. Abundances of carbon, nitrogen, oxygen, fluorine, sodium, scandium, titanium, iron, and nickel can be derived accurately from these types of stars using a combination of atomic lines and vibration- rotation molecular lines from CO, OH, CN, and HF. This analysis will provide some of the highest-quality abundances yet obtained for the SMC and will be used to characterize the current abundance distribution in this extragalactic system in comparison to that of the Milky Way. With the large primary aperture of Gemini South, and the relatively large brightness of red giants in the infrared, lower luminosity stars can be studied in comparison to previous SMC abundance studies. At lower luminosities the combination of greater photospheric densities and pressures (from larger surface gravities) results in simpler spectra and more reliable model atmospheres: these factors lead directly to more accurate abundances. Strategic abundance ratios, such as O/Fe or Ti/Fe, constrain the history of star formation and chemical enrichment in a stellar population.

Affiliated with

Also associated with

No associations

Rating

The Chemical Composition of the Small Magellanic Cloud from Infrared Spectroscopy of Red-Giant Stars does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The Chemical Composition of the Small Magellanic Cloud from Infrared Spectroscopy of Red-Giant Stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Chemical Composition of the Small Magellanic Cloud from Infrared Spectroscopy of Red-Giant Stars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-934379