222 citations · 901 across the 7 of their papers we have counts for
5 papers · 1 filter
Interstellar Extinction and Long-Period Variables in the Galactic Center
M. Schultheis, K. Sellgren, S. Ramirez +4
We use the Spitzer IRAC catalogue of the Galactic Center (GC) point sources (Ramirez et al. 2008) and combine it with new isochrones (Marigo et al. 2008) to derive extinctions base…
A Catalog of X-ray Point Sources from Two Megaseconds of Chandra Observations of the Galactic Center
M. P. Muno, F. E. Bauer, F. K. Baganoff +23
We present a catalog of 9017 X-ray sources identified in Chandra observations of a 2 by 0.8 degree field around the Galactic center. We increase the number of known X-ray sources i…
Chemical Abundances of Luminous Cool Stars in the Galactic Center from High-Resolution Infrared Spectroscopy
Katia Cunha, Kris Sellgren, Verne V. Smith +3
We present chemical abundances in a sample of luminous cool stars located within 30 pc of the Galactic Center. Abundances of carbon, nitrogen, oxygen, calcium, and iron were derive…
The Frequency of Carbon Rich Stars Among Extremely Metal Poor Stars
Judith G. Cohen, Stephen Shectman, Ian Thompson +6
We demonstrate that there are systematic scale errors in the [Fe/H] values determined by the Hamburg/ESO Survey (and by the HK Survey by inference) for certain extremely metal poor…
Really Cool Stars and the Star Formation History at the Galactic Center
R. D. Blum, Solange V. Ramirez, K. Sellgren +1
We present R=550 to 1200 near infrared H and K spectra for a magnitude limited sample of 79 asymptotic giant branch and cool supergiant stars in the central ~ 5 pc (diameter) of th…