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A Young White Dwarf Companion to Pulsar 1620-26: Evidence for Early Planet Formation

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arxiv astro-ph/0307339 v1 pith:7B5HISL2 submitted 2003-07-18 astro-ph

Steinn Sigurdsson , Harvey B. Richer , Brad M. Hansen , Ingrid H. Stairs , Stephen E. Thorsett This is my paper
classification astro-ph
keywords companionstellardwarfformationmassplanetpulsarwhite
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abstract

The pulsar B1620-26 has two companions, one of stellar mass and one of planetary mass. We detected the stellar companion using Hubble Space Telescope observations. The color and magnitude of the stellar companion indicate that it is an undermassive white dwarf ($0.34 \pm 0.04 M_{\odot}$) of age $480\pm 140$ Myr. This places a constraint on the recent history of this triple system and supports a scenario in which the current configuration arose through a dynamical exchange interaction in the cluster core. This implies that planets may be relatively common in low-metallicity globular clusters and that planet formation is more widespread and happened earlier than previously believed.

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Cited by 2 Pith papers

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  1. Pulsars in Globular Clusters With the SKAO

    astro-ph.HE 2026-07 conditional novelty 3.0 of 10

    SKA-MID and SKA-LOW are predicted to discover 150–1700 new pulsars in Galactic globular clusters, more than doubling the current population of 345.

  2. Astrophysics with the Laser Interferometer Space Antenna

    gr-qc 2022-03 unverdicted novelty 2.0 of 10

    A review summarizing established modeling techniques, open questions, and research directions for three classes of LISA gravitational wave sources.

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