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- W1521336294 abstract "High resolution and signal-to-noise spectra (0.22 A; S/N ≥ 50) of the H-alpha and He I 6678 A lines have been obtained over most of the cycle of the intermediate helium strong star HD 37017 with the Coude spectrograph and CCD camera at KPNO. These spectra are modeled with the non-LTE code of Mihalas to derive properties of the star. Both of the observed lines show small equivalent width variations on the previously known timescale of 0.901 days. The profiles can be simulated by a model with temperature 20,000K, log g=3.4, and helium number fraction 0.25, and which has a helium-rich spot of radius 40° and helium number fraction of 0.60 on the equator. Other possible models are discussed, as well as a model of the weak emission on the wings of H-alpha." @default.
- W1521336294 created "2016-06-24" @default.
- W1521336294 creator A5026532772 @default.
- W1521336294 date "1986-01-01" @default.
- W1521336294 modified "2023-09-27" @default.
- W1521336294 title "Analysis of the Helium Strong Star HD 37017" @default.
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- W1521336294 doi "https://doi.org/10.1007/978-94-009-4744-3_34" @default.
- W1521336294 hasPublicationYear "1986" @default.
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