Discovery of millisecond pulsar companions in the globular cluster 47 Tucanae

Authors
  • P.M. Lugger
  • P. Freire
  • J. Anderson
  • A.M. Serenelli
  • L. G. Althaus
  • A.M. Cool
  • J.E. Grindlay
  • P.D. Edmonds
  • R. Wijnands
  • N. Ivanova
Publication date 2016
Journal Memorie della Società Astronomica Italiana
Volume | Issue number 87 | 4
Pages (from-to) 535-538
Organisations
  • Faculty of Science (FNWI) - Anton Pannekoek Institute for Astronomy (API)
Abstract We present near-ultraviolet and optical Hubble Space Telescope observations of
the likely white dwarf companions to radio millisecond pulsars 47 Tuc Q, S, T, Y, and the previously identified white dwarf counterpart to 47 Tuc U. All five near-ultraviolet companions show colors that agree with the ones resulting from He-core white dwarf (He WD) cooling models for white dwarf masses ∼ 0.16−0.3 M. We find that the counterparts to 47 Tuc U and 47 Tuc T show Hα absorption, as is characteristic for white dwarfs with a H envelope, such as He WDs
Document type Article
Note The Cosmic-Lab conference:star clusters as cosmic laboratories for astrophysics, dynamics and fundamental physics MODEST 16 Bologna, April 18-22, 2016 Editors: F.R. Ferraro, B. Lanzoni © SAIt 2016
Language English
Published at http://sait.oat.ts.astro.it/MSAIt870416/index.html http://sait.oat.ts.astro.it/MmSAI/87/PDF/535.pdf
Other links https://ui.adsabs.harvard.edu/abs/2016MmSAI..87..535R/abstract
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