Iron Abundances in AGB Stars and M Supergiant Stars at the Galactic Center

S. V. Ramírez, K. Sellgren, D. M. Terndrup, J. S. Carr, S. Balachandran, R. D. Blum
1999 Symposium - International astronomical union  
We are measuring Fe abundances of cool, luminous stars within 30 pc of the center of the Milky Way. Our sample contains both AGB stars and M supergiants. Low-resolution (λ/Δλ = 500)HandKband spectra are used to estimate temperatures and gravities. Stellar Fe abundances are determined from high-resolution (λ/Δλ = 40 000)Kband spectra obtained on the IRTF using CSHELL. We find that Fe abundances of stars in the Galactic Center are consistent with the solar Fe abundance.
doi:10.1017/s0074180900203513 fatcat:l2a3qhqvwrf67hll3gz5puza2u