Radial velocities for the hydrogen-deficient star HD 168476, several helium-strong and helium-weak stars

Details Radial velocities for the hydrogen-deficient star HD 168476, several helium-strong and helium-weak stars Radial velocities for the hydrogen-deficient star HD 168476, several helium-strong and helium-weak stars

Aug 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26as...61..303w&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 61, Aug. 1985, p. 303-311.

Astronomy and Astrophysics

Astrophysics

17

Early Stars, Radial Velocity, Stellar Composition, Variable Stars, A Stars, Abundance, Helium, Hydrogen, Statistical Tests

Scientific paper

Radial-velocity measurements are reported for one hydrogen-deficient star (the extreme helium-rich star HD 168476), three helium-strong stars (HD 93030, HD 96446, and HD 133518), and two helium-weak stars (HD 5737 and HD 202671). Statistical tests are made to see if the stars are variable. HD 168476 is found to be variable in a complex manner; the variability of HD 93030 is confirmed but the period is revised to 1.88016 + or - 0.0008 days; and variability is suspected for HD 96248 and HD 5737. One of the stars used as a radial-velocity standard, HD 113537, is also suspected of variability.

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