Hydrogen-deficient star the outer layer of the star. The double degenerate scenario is a binary-star approach in which a smaller degenerate helium white dwarf and a larger carbon-oxygen white dwarf orbit each other so closely that they eventually inspiral due to gravitational wave losses. At the Roche limit, mass transfer takes place from the helium to the carbon-oxygen star. The latter undergoes helium shell burning to form a supergiant and evolve to a hydrogen-deficient star. The double degenerate scenario provides a better fit to the observational data. Hydrogen-deficient star A hydrogen-deficient star is a type of star that has little or no
Southern Star Central Gas Pipeline Southern Star Central Gas Pipeline Southern Star Central Gas Pipeline, Inc, headquartered in Owensboro, Kentucky, is a natural gas transmission system spanning over in the Midwest and Mid-continent regions of the United States. Southern Star's employees and its pipeline system and facilities are located throughout Kansas, Oklahoma, Missouri, Wyoming, Colorado, Texas, Nebraska, and Kentucky. It serves major markets such as St. Louis, Wichita, and Kansas City. Southern Star is a locally managed, private company owned by GE Energy Financial Services and Caisse de dépôt et placement du Québec. The company is more commonly referred to as Southern Star. The company's