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The White Dwarf Cooling Sequence of the Globular Cluster Messier 4
Open accessAbstract
We present the white dwarf sequence of the globular cluster M4, based on a 123 orbit Hubble Space Telescope exposure, with a limiting magnitude of V ~ 30 and I ~ 28. The white dwarf luminosity function rises sharply for I > 25.5, consistent with the behavior expected for a burst population. The white dwarfs of M4 extend to approximately 2.5 mag fainter than the peak of the local Galactic disk white dwarf luminosity function. This demonstrates a clear and significant age difference between the Galactic disk and the halo globular cluster M4. Using the same standard white dwarf models to fit each luminosity function yields ages of 7.3 ± 1.5 Gyr for the disk and 12.7 ± 0.7 Gyr for M4 (2 σ statistical errors).
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Cited by
Spergel, D. N., Verde, L., Peiris, H. V., Komatsu, E., Nolta, M. R., Bennett, C. L., Halpern, M., Hinshaw, G., Jarosik, N., Kogut, A., et al. (2003) · The Astrophysical Journal Supplement Series · doi:10.1086/377226 · Cited by 10,976
Bennett, C. L., Halpern, M., Hinshaw, G., Jarosik, N., Kogut, A., Limon, M., Meyer, S. S., Page, L., Spergel, D. N., Tucker, G. S., et al. (2003) · The Astrophysical Journal Supplement Series · doi:10.1086/377253 · Cited by 4,860
Co-formation of the disc and the stellar halo★
Belokurov, V, Erkal, D., Evans, N. W., Koposov, S. E., & Deason, A. J. (2018) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/sty982 · Cited by 1,020
Pulsating White Dwarf Stars and Precision Asteroseismology
Winget, D. E., & Kepler, S. O. (2008) · Annual Review of Astronomy and Astrophysics · doi:10.1146/annurev.astro.46.060407.145250 · Cited by 373
On Variations in the Peak Luminosity of Type Ia Supernovae
Timmes, F. X., Brown, E. F., & Truran, J. W. (2003) · The Astrophysical Journal · doi:10.1086/376721 · Cited by 332
Metadata
- Authors
- Hansen, B. M. S., Brewer, J., Fahlman, G. G., Gibson, B. K., Ibata, R., Limongi, M., Rich, R. M., Richer, H. B., Shara, M. M., & Stetson, P. B.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 2002-08-01
- Volume
- 574
- Issue
- 2
- Pages
- L155-L158
- ISSN
- 0004-637X (ISSN-L)
- 1538-4357
- OpenAlex
- W2107693062
- Cited by
- 249
- References
- 0
- FWCI
- 14.81
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Hansen, B. M. S., Brewer, J., Fahlman, G. G., Gibson, B. K., Ibata, R., Limongi, M., Rich, R. M., Richer, H. B., Shara, M. M., & Stetson, P. B. (2002). The White Dwarf Cooling Sequence of the Globular Cluster Messier 4. The Astrophysical Journal. https://doi.org/10.1086/342528
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