Open AccessIRAS 02143+5852: W Vir Cepheid with a dust shell
Author(s) -
Н. П. Иконникова,
М. А. Бурлак,
S. Yu. Shugarov,
A. A. Belinski,
A. A. Fedoteva,
А. М. Татарников,
A. V. Dodin,
S. Potanin,
К. Атапин,
С. Г. Желтоухов
Publication year - 2022
Publication title -
astronomy at the epoch of multimessenger studies. proceedings of the vak-2021 conference, aug 23–28, 2021
Language(s) - English
Resource type - Conference proceedings
DOI - 10.51194/vak2021.2022.1.1.043
Subject(s) - cepheid variable , physics , photometry (optics) , astrophysics , light curve , circumstellar envelope , brightness , amplitude , astronomy , supergiant , stars , optics
We present the results of multicolor (U BV R C I C JHK) photometry and low resolution spectroscopy of the poorly studiedpost-AGB candidate IRAS 02143+5852. A Cepheid-like brightness variability with the pulsation period of about 24.8 daysand the full peak-to-peak amplitude of 0.9 mag in the V -band was found. The spectral type varies from F3I at maximumto F8I at minimum light. A strong Hα emission line appears on the ascending branch of the light curve. Unlike typicalW Vir variables, IRAS 02143+5852 has a signicant infrared excess of radiation associated with the presence of a heavydust envelope around the star. We computed a dust shell model to obtain the parameters of the envelope.