Spectroscopic and Photometric Study of the S-type Mira V667 Cassiopeiae and the Carbon Star OR Cephei

Volume 52 number 1 (2024)

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David Boyd

West Challow Observatory, OX12 9TX, UK; davidboyd@orion.me.uk

Abstract

We report on spectroscopic and photometric observations of the S-type Mira V667 Cas and the carbon star Mira OR Cep recorded during one pulsation cycle of each star in 2022. Spectra are calibrated in absolute flux using concurrent photometry. We present measurements of V and Ic magnitudes and V–Ic color index, classify spectra in the revised MK system, and investigate how absolute flux in the Hα to Hδ emission lines varies with pulsation phase for each star.