TU Ophiuchi: Mira variable - Not dwarf nova

Details TU Ophiuchi: Mira variable - Not dwarf nova TU Ophiuchi: Mira variable - Not dwarf nova

Apr 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988ap%26ss.143..211w&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 143, no. 1, April 1988, p. 211-213.

Astronomy and Astrophysics

Astrophysics

2

Astronomical Catalogs, Astronomical Photometry, Dwarf Novae, Mira Variables, Ophiuchi Clouds, Stellar Flares, H Alpha Line, H Beta Line, Stellar Color, Stellar Spectra, Variable Stars

Scientific paper

This paper presents the results of high-speed photometry, spectroscopy, and visual observations of TU Ophiuchi, carried out to provide a definitive classification for this object. TU Oph was classified by Himpel (1944) as a U Gem-type and by Vogt and Bateson (1982) as a flare star. It is shown here that the color and outburst characteristics of TU Oph exclude the dwarf nova and flare star classifications, showing it to be a Mira variable. A comparison of the TU Oph spectrum with the TiO-band strengths in the spectra of Mira variables published by Merrill et al. (1962) shows that TU Oph has a spectral type of M6e or M7e.

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