eps Aur eclipse spectral and photometric analysis (Chadima+ 2011)

Astronomy and Astrophysics – Astronomy

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Stars: Variable, Photometry: Ubv, Spectroscopy

Scientific paper

The file table1a.dat contains measurements of a central intensity (CI), an equivalent width (EW) and a radial velocity (RV) of various lines (H-alpha, Si6347, Si6371, Fe6417 and Fe6433) made on spectra secured at the Ondrejov Observatory (OND). The file table1b.dat contains the same measurements but for spectra secured at the Dominion Astronomical Observatory (DAO) and the file table1c.dat for spectra secured at the Castanet-Tolosan Observatory (CTO). For CTO spectra, the H-alpha line was not measured. Note that the H-alpha line during an eclipse has two absorption cores and both were measured. But a word of caution is needed here - these measurements are done on original spectra, not on spectra after the correction presented in Sect. 4 of the related paper. The radial velocity of the Halpha emission was measured by matching V and R peak maxima of a normal and an inversed line profile. Note that table1a.dat tabel1b.dat and table1c.dat contain "blanks" for measurements which were not done. Its was due to a high asymetry of a particular line or its high degree of blending with strong teluric lines (or disappearing of an Halpha peak) which disables a reasonable measurement of given line characteristics. The file table2b.dat contains U,B,V photometry of eps Aur secured at the Hvar Observatory. The file table2a.dat contains U,B,V photometry of HR 1644 (a check star for eps Aur photometry presented in table2a.dat) secured at the Hvar Observatory. Entire information about all data sets can be found in the related paper in Sect. 2.
(5 data files).

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