Determining hot star wind terminal velocities from low-resolution IUE data

Details Determining hot star wind terminal velocities from low-resolution IUE data Determining hot star wind terminal velocities from low-resolution IUE data

Sep 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...289..221p&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 289, no. 1, p. 221-224

Astronomy and Astrophysics

Astrophysics

15

Absorption Spectra, Hot Stars, Stellar Winds, Terminal Velocity, Ultraviolet Spectra, Calibrating, Iue, Resonance Lines, Spectrum Analysis

Scientific paper

Empirical relations are provided which enable consistent determinations of wind terminal velocities for hot stars where only low-resolution IUE spectra are available. The calibrations are based on terminal velocities derived from the violet limit of 'black' absorption troughs seen in high-resolution IUE spectra of saturated wind lines of hot stars, and the corresponding wavelengths of the absorption minimum and emission peaks in low-resolution spectra of CIV lambda 1550 and N V lambda 1240 P Cygni profiles of the same stars. The relations may be applied to low-resolution IUE data of extragalactic WR and OB stars, and the nuclei of planetary nebulae.

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