Below are comparison images for ngc0891-halo2a. Hold your mouse over one of the three segments of each dial (or the mask button) to see the image. Clicking on the segment will download the source image as a 4200x4200 jpeg. CMDs and diagnostic plots can be found further down the page.

Below is the CMD for the ngc0891-halo2a stars colored above.

The TRGB is found at F814W = 25.8 mag and I = 26.1, corresponding to a distance modulus of 29.85 (9.33 Mpc). The (V-I ) color of the RGB at M_I = -3.5 is 0.0, corresponding to a metallicity of [Fe/H] = -12.6.

Below are the diagnostic plots for the photometry output. Color indicates the cuts used.

The aperture corrections plotted above are the average of those shown below. The red line indicates the best fit to the aperture corrections of the entire GHOSTS survey.

2007 David Radburn-Smith and the GHOSTS team. Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
email: NOSPAMdjrs@stsci.edu