Small Region of ACS Field Reveals Faint White Dwarfs

A blow-up of view of a small region of the Advanced Camera for Surveys field reveals very faint white dwarfs. The hotter dwarfs are 4 billion years old and the cooler dwarfs are 6 billion years old.

About the colours

The image is a composite of several separate exposures made by the ACS instrument on the Hubble Space Telescope. Two filters were used to sample broad wavelength ranges in the visible and near infrafed. The color results from assigning different hues (colors) to each monochromatic image. In this case, the assigned colors are: Cyan: F606W (V) Orange: F814W (I)

About the data

HST Proposal: 9815 I. King (University of Washington), J. Anderson (STScI), G. Piotto (University of Padova), and L. Bedin (STScI); and 10471 : I. King (University of Washington), J. Anderson (STScI), G. Piotto (University of Padova), L. Bedin (STScI), S. Cassisi (Collurania Astronomical Observatory, Italy), and M. Salaris (Liverpool John Moores University).