Fast Time Resolution Spectroscopy Of A Pulsating f3 Cep Star Using A Charge-Coupled Device (Ccd) System

Arthur Young; I. Furenlid

doi:10.1117/12.959775

21 November 1980 Fast Time Resolution Spectroscopy Of A Pulsating β Cep Star Using A Charge-Coupled Device (CCD) System

Arthur Young, I. Furenlid

Proceedings Volume 0264, Applications of Digital Image Processing to Astronomy; (1980) https://doi.org/10.1117/12.959775
Event: 1981 Los Angeles Technical Symposium, 1980, Los Angeles, United States

Abstract

An experimental Fairchild CCD-211 was placed in the 2.1 m coude spectrograph at the Kitt Peak National Observatory and used to record an 87 Å spectral band centered on Hα. On the night of 1979 July 11 UT date, this system was used to observe continuously the extreme 8 Cephei variable BW Vulpeculae throughout one of its 4^h49^m cycles with an average exposure of 13 minutes per observation. A total of 18 observations was secured. The results show dramatic profile variations of Hα, including features not previously reported, and extreme variations of the C II λλ6578, 6582 lines, including variations of equivalent width. The fast time resolution capability and the photometric linearity of the CCD has permitted the detection of subtle effects which have been missed by photographic observations, and has led directly to important new interpretations of the complex atmospheric pulsations in this star.

Citation Download Citation

Arthur Young and I. Furenlid "Fast Time Resolution Spectroscopy Of A Pulsating β Cep Star Using A Charge-Coupled Device (CCD) System", Proc. SPIE 0264, Applications of Digital Image Processing to Astronomy, (21 November 1980); https://doi.org/10.1117/12.959775

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