Photometry of K giants in the nuclear bulge of the galaxy

Astronomy and Astrophysics – Astronomy

Scientific paper

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Galactic Bulge, Galactic Nuclei, Giant Stars, Infrared Astronomy, K Stars, Late Stars, Stellar Spectrophotometry, Astronomical Catalogs, Milky Way Galaxy, Stellar Color, Stellar Magnitude

Scientific paper

For 52 K and early-M giants in Baade's Window at a galactic latitude of -3°.9, the authors present RIJHK photometry. The location of these galactic bulge giants on various color-color plots is markedly different from both globular cluster and solar neighborhood giants. However, their locations in infrared color-magnitude diagrams are not obviously consistent with the interpretation that they are old and metal rich. The authors tentatively conclude that blanketing by an as yet unidentified source (or sources) has a significant effect on the energy distributions of these stars which spectroscopically have been shown to be metal rich.

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