He 2-467 - A yellow symbiotic star
نویسندگان
چکیده
منابع مشابه
BD − 21 ◦ 3873 : another yellow - symbiotic barium star ?
An abundance analysis of the yellow symbiotic system BD−21 • 3873 reveals it to be a metal-poor K-giant ([Fe/H] = −1.3) which is enriched in the heavy s-process elements. In that respect, this star appears to be a twin of AG Dra, another yellow symbiotic system analyzed in a previous paper (Smith et al., 1996). The heavy-element abundance distributions of AG Dra and BD−21 • 3873 are almost iden...
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As part of a multi-wavelength campaign to observe the 2000–2002 outburst of the prototypical symbiotic star Z Andromedae, we observed this object six times each with the Multi-Element Radio Linked Interferometer Network (MERLIN) and Very Large Array (VLA). The radio flux varied significantly during the course of the optical outburst at all three observation frequencies (1.4, 5, and 15 GHz). A j...
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Yellow symbiotic stars are useful targets to probe whether mass transfer has happened in these binary systems. However, the number of known yellow symbiotic stars is very scarce. We report spectroscopic observations of five candidate yellow symbiotic stars selected by their position in the 2MASS (J−H) versus (H−Ks) diagram and included in some emission-line catalogs. Among the five candidates, ...
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In this paper we report on the real nature of the star HD145792, classified as He weak in “The General Catalogue of Ap and Am stars”. By means of [email protected] high resolution spectroscopic data, we refined the atmospheric parameters of the star, obtaining: Teff =14400 ± 400 K, log g=4.06 ± 0.08 and ξ=0 +0.6 km s. These values resulted always lower than those derived by different authors with ...
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ژورنال
عنوان ژورنال: Publications of the Astronomical Society of the Pacific
سال: 1980
ISSN: 0004-6280,1538-3873
DOI: 10.1086/130620