JHKL Photometry and the K-band Luminosity Function at the Galactic Center

Details JHKL Photometry and the K-band Luminosity Function at the Galactic Center JHKL Photometry and the K-band Luminosity Function at the Galactic Center

1996-04-18

arxiv.org/abs/astro-ph/9604109v1

Astronomy and Astrophysics

Astrophysics

Accepted by the ApJ. LaTex, 25 pages text. Uses aastex v4. A complete PostScript version including eight (embedded, eps) figur

Scientific paper

10.1086/177917

J, H, K, and L photometry for the stars in the central 2' (5 pc) of the Galaxy are presented. Using the observed J-H, H-K, and K-L colors and assumed intrinsic colors, we determine the interstellar extinction at 2.2 mic (A_K) for approximately 1100 individual stars. The mean A_K (= 3.3 mag) is similar to previous results, but we find that the reddening is highly variable and some stars are likely to be seen through A_K > 6 mag. The de-reddened K-band luminosity function points to a significantly brighter component to the stellar population (> 1.5 mag at K) than found in the stellar population in Baade's window, confirming previous work done at lower spatial resolution. The observed flux of all Galactic center stars with estimated Ko (de-reddened magnitude)

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