Discovery of a cool expanding shell at -1200 kilometers per second around V471 Tauri

Details Discovery of a cool expanding shell at -1200 kilometers per second around V471 Tauri Discovery of a cool expanding shell at -1200 kilometers per second around V471 Tauri

Jun 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...341l..17s&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 341, June 1, 1989, p. L17-L20.

Astronomy and Astrophysics

Astrophysics

14

Eclipsing Binary Stars, Gas Expansion, Stellar Envelopes, Ultraviolet Spectra, Absorption Spectra, Iue, K Stars, Spectral Line Width, Stellar Winds, White Dwarf Stars

Scientific paper

High-resolution IUE spectra of V471 Tauri reveal the presence of a very-high-velocity cool expanding gas in the line of sight to the binary system with an expansion velocity of -1200 km/s. The summed strength of the coadded absorption is 125 mA + or - 25 mA, with FWHM = 30 km/s. It is suggested that the observed absorption may be related to the narrow coadded absorption at -590 km/s noted by Bruhweiler and Sion (1966). The large expansion velocity suggests a possible association with an ancient nova outburst.

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