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Hubble Space Telescope Observations of the Main Sequence of M4

  • Authors: H. B. Richer, G. G. Fahlman, J. Brewer, S. Davis, J. Kalirai, P. B. Stetson, B. M. S. Hansen, R. M. Rich, R. A. Ibata, B. K. Gibson, and M. Shara

Richer et al. 2004 The Astronomical Journal 127 2771.

  • Provider: AAS Journals

Caption: Fig. 4.

Magnitude of the average photometric errors in the inner annuli (1–3) in both I and V from artificial‐star tests plotted as a function of stellar magnitude.

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