GP Comae Berenices
GP Comae Berenices, abbreviated to GP Com and also known as G 61-29, is a star system composed of a white dwarf orbited by a planetary mass object, likely the highly eroded core of another white dwarf star. The white dwarf is slowly accreting material from its satellite at a rate of /year and was proven to be a low-activity AM Canum Venaticorum star, AM CVn star. The star system is showing signs of a high abundance of Ionization, ionized nitrogen from the accretion disk around the primary. Planetary system The material emitted from the planetary mass companion is mostly helium, with a molar ratio of nitrogen up to 1.7%, very low neon levels and other elements not detectable at all. Approximately half of the luminosity of the system comes from the accretion disk. The planetary object is suspected to contain a Strange matter, strange quark matter core due to its unusually high density, which must be above to prevent Tidal force, tidal disruption; the theoretical bound fo ...
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