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Hubble Space Telescope Imaging Spectrograph Observations of the Hot White Dwarf in the Close Binary Feige 24

Vennes, Stephane; Polomski, Elisha; Lanz, Thierry; Thornstensen, John; Chayer, Pierre; Gull, Ted


We obtained and analyzed two Hubble Space Telescope Imaging Spectrograph spectra of the white dwarf in the DA plus dMe binary Feige 24. The spectra, obtained at orbital quadratures, provide new estimates of the white dwarf motion and gravitational redshift resulting in revised white dwarf parameters. An analysis of interstellar absorption lines reveals the presence of two clouds ( +3.1 km s-1, +17.6 km s-1) in the line of sight toward Feige 24; one of these clouds (+17.6 km s-1) is identified...[Show more]

CollectionsANU Research Publications
Date published: 2000
Type: Journal article
Source: Astronomical Journal


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