SIMBAD references

2000A&A...358.1001W - Astronomy and Astrophysics, volume 358, 1001-1006 (2000/6-3)

Physical properties of the pulsating hydrogen-deficient star object LSS 3184 (BX Cir).


Abstract (from CDS):

We report new determinations of the radius and mass of the pulsating helium-rich, hydrogen-deficient star LSS 3184 (BX Cir) using measurements of radial velocity and angular radius throughout its pulsation cycle. Measurements of radial velocity, and thus changes in stellar radius (ΔR*), were made using Anglo-Australian Telescope echelle spectra. Hubble Space Telescope ultraviolet spectra and ground-based BV photometry were used to find temperatures and fluxes throughout the pulsation cycle. The temperatures and fluxes were used to find the angular radius of the star (α). The α, Δα, and ΔR values thus found were used to calculate the mean stellar radius <R*≥2.31±0.10R . If we use the previously determined logg=3.35±0.1 for LSS 3184 and our radius estimate, we find its mass to be M*=0.42±0.12M.

Abstract Copyright:

Journal keyword(s): stars: chemically peculiar - stars: oscillations - stars: individual: LSS 3184 - stars: variables: general

Simbad objects: 2

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