2024
DOI: 10.1051/0004-6361/202348428
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Pulsation modeling of the Cepheid Y Ophiuchi with RSP/MESA

V. Hocdé,
R. Smolec,
P. Moskalik
et al.

Abstract: Y Ophiuchi (Y Oph) is a classical Cepheid with a pulsation period of $P=17.12\,$days. This star is reported to be as dim as a Cepheid of about half its pulsation period and it exhibits a low radial velocity and light-curve amplitude. For these reasons, Y Oph is not used to calibrate period-luminosity (PL) relation and its distance remains uncertain. Our objective is to conduct hydrodynamical pulsation modeling of Y Oph to derive its distance and provide a physical insight into its low amplitude and luminosity,… Show more

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