Sentences with phrase «white dwarf stars observed»

The researchers use the light of white dwarf stars observed with the Hubble Space Telescope.

Not exact matches

«The gas which forms the major part of the insterstellar medium,» explains Jorge García Rojas, a researcher at the IAC who is the first author on the paper «can be observed because its atoms are ionized by the photons emitted by the hot stars embedded inside it (which can either very massive stars, or white dwarfs, which are also very hot).

Using data involving the temperature and brightness of the stars collected by the Hubble Space Telescope, they observed 44 blue stragglers among the cluster's many thousands of red - giant and white - dwarf stars.

The stars observed cover almost the entire range of star - types — main sequence, red giants, and white dwarfs.

Researchers using NASA's Hubble Space Telescope have observed, for the first time ever, an enormous object with the composition of a comet being shredded and scattered by a white dwarf, the burned - out husk of a massive star.

HD 147513 A is a so - called young «Barium dwarf» (s - process element rich but comparatively carbon deficient) star that was probably enriched by an asymptotic branch giant (AGB) star (see Gacrux) but is now a very dim, white dwarf companion, which has an observed separation of around 4,400 AUs — 5.7» at a HIPPARCOS distance estimate of 42.0 ly (Porto de Mello and da Silva, 1997; and Poveda et al, 1993, pp. 74 - 75).