Figure 8 from Ultraviolet Properties of Galactic Globular Clusters with GALEX. I. The Color-Magnitude Diagrams

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Ultraviolet Properties of Galactic Globular Clusters with GALEX. I. The Color-Magnitude Diagrams

Authors: Ricardo P. Schiavon, Emanuele Dalessandro, Sangmo T. Sohn, Robert T. Rood, Robert W. O'Connell, Francesco R. Ferraro, Barbara Lanzoni, Giacomo Beccari, Soo-Chang Rey, Jaehyon Rhee, R. Michael Rich, Suk-Jin Yoon, and Young-Wook Lee

Schiavon et al. 2012 The Astronomical Journal 143 121.

Provider: AAS Journals

Caption: Figure 8.

Quality of PSF modeling in a typical case: NGC 288 in the NUV. Crowding in the central regions is relatively high, at the resolution of GALEX, photometry is relatively inaccurate for stars within ~0 farcm 5 from the cluster center. The PSF-subtracted image shows a diffuse residual, associated with the detection of NUV light from unresolved turnoff stars.

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