http://arxiv.org/abs/2303.14781
The present study collects 456 new times of maximum light of the classical Cepheid RT Aur, covering the period from 1897 to 2022. The O-C diagram resulting from these observations shows that the period given by the GCVS has to be corrected. It results that no strong period variation is found. However, the observed O-C residuals show a long term periodic trend. In the hypothesis of RT Aur being in a binary system, an orbit cannot be deduced from the available astrophysical data.
G. Boistel
Tue, 28 Mar 23
38/81
Comments: 8 pages; 6 figures ; links to download data on GEOS website