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Paper detail

The End of the White Dwarf Cooling Sequence in M4: an efficient approach

We use 14 orbits of ACS observations to reach the end of the white-dwarf cooling sequence in the globular cluster M4. Our photometry and completeness tests show that the end is located at magnitude m_F606W = 28.5+/-0.1, which implies an age of 11.6+/-0.6 Gyr (internal errors only). This is consistent with the age from fits to the main sequence turn-off (12.0+/-1.4 Gyr).

preprint2009arXivOpen access
L. R. BedinM. SalarisG. PiottoJ. AndersonI. R. KingS. Cassisi
astro-ph.GA
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L. R. BedinM. SalarisG. PiottoJ. AndersonI. R. KingS. Cassisi

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